91results about How to "Snap tight" patented technology

The invention discloses a drill bit with dry internal drillings discharge and is intended to solve the problem that an existing drillings-discharge drill bit with simple structure is low in drillingsdischarging efficiency, cannot provide dry discharging for drillings, is not convenient enough to change during use and is high in post-damage maintenance cost. The drill bit comprises a bit body, a plurality of cutting edges in spiral shape, a shank and a plurality of through holes; the cutting edges are connected to the outer side of the bit body; the through holes are arranged in the outer sideof the bit body between the cutting edges; one end of the bit body is fitted with a top cap; the top cap is fixedly connected with the bit body via a screw hole and a screw; a plurality of conical protrusions are evenly connected to the edge, close to grooves, of the top cap. The middle of the other end of the bit body is connected with a fixing terrace; the bit body is connected with the shank via the fixing terrace; the outside of the other end of the shank is connected with a hex terrace; a second inner tube is connected to the middle of the inside of the end, close to the hex terrace, ofthe shank; an inner ring is connected to each inner side of the second inner tube.

The invention discloses a high-sealing-performance gate for a water conservancy project. The high-sealing-performance gate comprises a gate and a flashboard. The main body of the gate is of a U-shapedstructure. Fixing plates are fixedly connected on the upper surfaces of the two ends of the gate through bolts and nuts in a matched mode, rectangular openings are arranged in the middle of the fixing plates in advance, supporting covers are fixedly connected in the rectangular openings in the upper surfaces of the fixing plates through screws, and through grooves corresponding to the rectangularopenings in the fixing plates are also arranged in the supporting covers. The high-sealing-performance gate is convenient to operate and high in sealing performance, a steel column is arranged on thelower bottom surface of the flashboard and clamped with a cylindrical groove in the lower end of the gate, the closing stability is improved and the sealing performance of the gate is indirectly guaranteed. The steel column and the cylindrical groove are clamped more tightly by arranging the rubber sleeve on the outer surface of the steel column, the sliding groove structure with the sealing function is arranged on the side face of the steel column and all theses are direct means for improving the sealing performance of the gate and the air bag component can be replaced.

The invention discloses an aluminum profile corner adjustable in a field joint. The aluminum profile corner comprises a corner base plate frame and an adjustable convex type joint, wherein the adjustable convex type joint is arranged on two adjacent corner surfaces of the corner base plate frame, the adjustable convex type joint comprises a first convex type joint frame plate and a second convex type joint frame plate, the first convex type joint frame plate comprises a first connection transverse plate, a first vertical plate and a first mounting base plate, the second convex type joint frame plate comprises a second connection transverse plate, a second vertical plate and a second mounting base plate, the first connection transverse plate on the first convex type joint frame plate and the second connection transverse plate on the second convex type joint frame plate are overlapped and then connected by virtue of a bolt, the first mounting base plate on the first convex type joint frame plate is arranged on the corner surface by virtue of a bolt, and a second mounting base plate on the second convex type joint frame plate is arranged on the corner surface by virtue of a bolt.

The invention discloses a line-replaceable earphone, which is provided for the selective overlapping of a plurality of audio lines, wherein each audio line is provided with an audio terminal. The earphone comprises an earphone body and a first buckling structure, wherein the earphone body comprises an audio socket; and the first buckling structure is arranged at the audio socket. When one of the audio lines is overlapped with the earphone body, the first buckling structure closely buckles the audio terminal and the audio socket. Therefore, the earphone provided by the invention can enable a user to select the audio lines with different lengths to match the earphone body according to different conditions, and also can buckle and firmly connect the audio line and the earphone body in a plugging way.

The invention provides a press fitting device for an instrument. The press fitting device comprises an air cylinder, a moving device, two symmetrical first sleeves, clamping blocks and an instrument panel meter cover, wherein the air cylinder is connected to a ceiling, the moving device is connected to an air cylinder driving shaft, the two symmetrical first sleeves are connected to the lower endof the moving device, the clamping blocks are connected to the first sleeves, the instrument panel meter cover is connected between the two clamping blocks in an abutting mode, the lower end of the instrument panel meter cover is connected with instrument clamping blocks, an instrument panel box body corresponding to the instrument panel meter cover is arranged below the instrument panel meter cover, and clamping holes corresponding to the instrument clamping blocks are formed in the instrument panel box body. According to the press fitting device, the defects in the prior art are overcome, the design is reasonable, the structure is compact, the problem that because the center line of an existing instrument box body and the instrument meter cover cannot be ensured to be located on the samestraight line, the press-fitting effect is influenced is solved; and a plurality of buffering structures are adopted, so that it is ensured that the instrument panel box body is connected with the instrument panel meter cover more tightly, and meanwhile, the instrument is more convenient to separate from the press-fitting device after the press-fitting is completed, and the device has strong practicability.

The invention discloses an automatic filter screen locking device. The automatic filter screen locking device comprises a fixed housing, a filter screen and a locking device, wherein the filter screenis fixedly mounted inside the fixed housing; the locking device is movably connected to the inner part of the fixed housing and is positioned on the side surface of the filter screen; the top surfaceof the fixed housing is fixedly connected with a limiting plate; a slide slot is formed in the inner side surface of the limiting plate; a pulling rod is fixedly mounted inside the locking device; the two ends of the pulling rod are fixedly connected with first springs; limiting slots are formed in positions, on the edges of the first springs, of the two ends of the pulling rod; blocking blocks are movably blocked inside the limiting slots; fixed columns are arranged inside the first springs in a sleeved mode; upper and lower ends of each first spring are fixedly blocked with connecting slots; and the first springs sleeve the outer surfaces of grooves. The automatic filter screen locking device can avoid affecting use effect of a fan as loosening and sliding are caused by vibration of thefilter screen, and the like, so that use stability is improved.

The invention provides tortoise jelly assembly equipment. The tortoise jelly assembly equipment comprises a control device and an assembly table, and further comprises a cover feeding device, a sugar packet feeding device, a cup feeding device, a downwards pressing device and a turnover device, all of which are sequentially arranged around the assembly table in the clockwise direction or the anticlockwise direction. The assembly table comprises a rotary platform. A plurality of stations distributed along the circumference are arranged on the rotary platform. The cover feeding device comprises a cover outlet. The sugar packet feeding device comprises a sugar packet outlet. The cup feeding device comprises a cup outlet. The cover outlet, the sugar packet outlet and the cup outlet correspond to the stations in position respectively. The downwards pressing device comprises downwards pressing heads capable of moving longitudinally. The downwards pressing heads correspond to the stations in position and used for pressing cups and covers. The turnover device comprises turnover tables for turnover movement. The turnover tables correspond to the stations in position. The tortoise jelly assembly equipment can assemble tortoise jelly automatically, manual operations are reduced, the labor cost can be lowered, production efficiency is improved, and food safety and sanitation are guaranteed.