41results about How to "Tighten evenly" patented technology

The present invention provides a fitted, supportive, comfortable shoe upper with a laceless closure device comprising one interlaced strap capable of rapid adjustment in multiple planes of movement.

The invention discloses an automatic forming machine of a thin-walled short U bent pipe with a welding ring, relates to the technical field of automation equipment, and can continuously accomplish the forming of the thin-walled short U bent pipe and socket welding ring operation, so as to prevent a pipe wall from folds. The automatic forming machine comprises a feeding assembly, a pipe cutting assembly, a pipe bending assembly, a circumference position rotating assembly and a socket welding ring assembly, wherein the feeding assembly at least comprises a clamping mechanism and a No.1 driving mechanism; the No.1 driving mechanism drives the clamping mechanism to perform forward feeding; the pipe cutting assembly at least comprises a cutting tool mechanism and a No.2 driving mechanism; the No.2 driving mechanism drives a cutting tool to act; the pipe bending assembly at least comprises a fixed part, a semicircle die, a movable part and a No.3 driving mechanism; one end of a fixed length pipe is clamped at the fixed part; the other end of the fixed length pipe gets over the semicircle die and then is movably matched with the movable part; the circumference position rotating assembly at least comprises a rotating frame, a pipe clamping mechanism, a No.4 driving mechanism and a discharging cylinder; the socket welding ring assembly at least comprises a welding ring feeding unit, a welding ring guide unit and a socket welding ring unit; the socket welding ring unit pushes the welding ring to a straight pipe section of the thin-walled short U bent pipe.

To protect hydraulic assemblies, in particular to protect hydraulic brace systems, pressure relief valves 1 are used, the closing part 10 of which is formed by a piston 15, which is connected to the connection 4, and the valve spring retainer 12, which comprises said piston, is arranged displaceably thereon and accordingly has a cylindrical design. Between the connection 4, which is equipped with a blind hole 5 and radial bores 6, 7, and the displaceable closing part 10 and/or the correspondingly shaped valve spring retainer 12 a damping chamber 20 is formed, which is directly connected to the blind hole 5 and hence to the system pressure.

The invention discloses a tea production process, discloses a gunpowder tea production process, and solves the problem that the quality and the taste of gunpowder tea are affected due to low tightnessof tightened gunpowder tea during the production process of the gunpowder tea. The gunpowder tea production process includes initial preparation and pre screening of fresh tea, frying of the tea, spraying of rice milk, post-screening, sorting, mixing and packaging; during the process of frying of the tea and spraying of the rice milk, the pre-screened tea is respectively fried to further reduce the moisture content of the tea, in the frying process, the rice milk is evenly sprayed on the tea, so that the surface of the tea is evenly coated with the rice milk, the moisture content of the friedtea is 6 to 7 %, the tea is curled into the gunpowder tea, the tea can be better tightened in the frying process, and the taste and the quality of the tea are better.

The invention provides a high-precision glass fiber screen arrangement and fusion pressing device suitable for manufacturing a microporous element. The high-precision glass fiber screen arrangement and fusion pressing device comprises a base; a rotary table, rotatably arranged on the base; a support, fixed to the rotary table, being in a shape like a Chinese character 'hui' and being provided withfour right-angle interior angles; a Y-direction reference block, an X-direction reference block and an X-direction pressing block, pressed on the Y-direction reference block, and the X-direction transmission mechanism being arranged in the horizontal direction and driving the X-direction pressing block to slide on the Y-direction reference block and a reference plane limited by the Y-direction reference block; a Y-direction pressing block, pressed on the X-direction reference block along the vertical direction; a Y-direction transmission mechanism; a driving device, used for driving the X-direction transmission mechanism and the Y-direction transmission mechanism to move; a space defined by the X-direction reference block, the Y-direction reference block, the X-direction pressing block and the Y-direction pressing block forming the spatial position of screen segment arrangement and limiting the reference of screen segment arrangement. Precise screen arrangement and fusion pressing ofsquare, circular or hexagonal glass fibers and the like can be achieved, and the beneficial effect of being precise in arrangement is achieved.

A rotary vacuum wicketting arrangement has a rotary hub body positioned on a shaft or spindle and supporting a number of pickup arms, and a non-rotating vacuum spinning head that provides vacuum to the rotating hub body and pickup arms over a portion of their arcuate travel. The rotary hub body is provided with a lock ring formed or a pair of half rings with hand levers so that the position of the hub body on the shaft can be adjusted toollessly. The pickup arms are held in place in their sockets by ball and spring detents, so that they can be pulled out for cleaning and reinserted without tools. A friction fitted plug closes off the end of each arm.

In an electromagnetic fuel injection valve, a valve housing is formed by sequentially connecting a valve seat member, a magnetic cylinder, a nonmagnetic collar, and a stationary core. A coil housing is fittingly fixed to an outer periphery of the magnetic cylinder, and houses a coil assembly provided in an outer periphery of the stationary core. The coil housing includes a shell part surrounding the coil housing, an annular bent part bent radially inward from a front end of the shell part, and a cylindrical boss part projecting forward from a front end of the annular bent part. An inner peripheral surface of the annular bent part and an inner peripheral surface of at least a rear half part of the boss part are shrinkage-fitted to an outer peripheral surface of the magnetic cylinder. Thus, it is possible to eliminate distortion propagating to the magnetic cylinder, and eliminate a gap from fitted portions between the magnetic cylinder and the coil housing to improve magnetic efficiency, thereby exerting stabile fuel injection characteristics.

The invention discloses a precision detection device for optical fiber gyroscope production, and relates to the technical field of optical fiber gyroscopes. The problem of axis deviation of an existing detection device is solved. The precision detection device specifically comprises a bottom plate, the outer wall of the top of the bottom plate is fixedly connected with an adjusting assembly, the outer wall of the top of the adjusting assembly is fixedly connected with a locking assembly, the locking assembly comprises a connecting plate and an end frame, the outer wall of the top of the connecting plate is fixedly connected with a cover shell, and the inner wall of the top of the cover shell is fixedly connected with an upper ring. By arranging the locking assembly, a power motor is started to drive an outer gear to rotate, the outer gear is meshed with an outer rack to drive a lantern ring to rotate, then an inner rack is meshed with an inner gear to drive a rotary drum to rotate, and a rotary arm rotates, so that a roller on the inner wall of an end frame is gradually tightened; at the moment, the optical fiber gyroscope is placed in the center area of the locking assembly, and the four power motors synchronously work, so that the roller can be uniformly tightened, and the axis of the gyroscope is prevented from deviating.

The invention discloses a pipe cutting device used for cutting a line pipe. The pipe cutting device comprises an installing shell provided with a cavity inside, an installing sleeve installed on the installing shell in a rotating manner, a force exerting part installed on the installing shell in a rotating manner, a transmission part and a cutting part, wherein the transmission part is located inthe installing shell and connects the installing sleeve with the force exerting part, and the cutting part is installed on the installing sleeve. The cutting part comprises a sleeve ring which is fixedly connected to the end, away from the transmission part, of the installing sleeve. Elastic clamping pieces are uniformly arranged on the sleeve ring at intervals. Cutting teeth are fixedly connectedto the sides, facing the axis of the sleeve ring, of the elastic clamping pieces. Fixing parts for stringing all the elastic clamping pieces as a whole are arranged on the outer sides of the elasticclamping pieces. The pipe cutting device used for cutting the line pipe can carry out ring cutting on the line pipe, the pipe shearing efficiency is improved, and the problems that a traditional toolis high in construction cost and labor is wasted are solved.

The invention discloses a device capable of eliminating a gap between a screw and a nut. The device capable of eliminating the gap between the screw and the nut comprises the nut arranged on the screw. Two narrow grooves are radially formed in the nut and symmetrical to each other about an axis of the nut. Hex socket adjusting screws are arranged on the narrow grooves. The device capable of eliminating the gap between the screw and the nut can meet the requirement for adjusting a gap of a screw and nut pair and is even in nut deformation, high in adjusting precision, balanced in abrasion, capable of prolonging service life, simple in structure and convenient to operate.