8results about How to "Increase the friction surface" patented technology

The utility model discloses a drop type fuse porcelain bottle protection fixing frame, including protection fixing frame main part, fixed plate, fixed frame lock block, front and back inclination angle adjusting block, porcelain bottle fixed hook and install hook angle adapter. Through fixed frame lock block realizes and compound insulation cross arm's lock and unlock, the connecting portion cooperation front and back inclination angle adjusting block of main part side portion realizes inclination angle regulation, and four sets of adjusting holes are established to front and back inclination angle adjusting block, can realize four -bar length regulation, and porcelain bottle fixed hook is semicircular arc shape, and bottom is equipped with reinforcing rib adaptation porcelain bottle, and the angle adapter of side edge is convenient for insulating rod operation. The fixed frame installation is simple, and can be live operation, and adapts different installation distance and angle, can effectively prevent porcelain bottle from falling because of connecting piece failure, is applicable to 20KV and below transmission line, and service life is long.

The invention discloses a novel linear friction anti-beam-falling device and a using method thereof. The novel linear friction anti-beam-falling device comprises a first connecting base, a second connecting base and a friction limiting component. The first connecting seat and the second connecting seat are respectively arranged at proper positions of a bridge pier and a bridge superstructure, and the two ends of the friction limiting component are respectively and stably connected with the first connecting seat and the second connecting seat; the first connecting base and the friction limiting component are connected in a pin shaft connecting mode, and the connecting hole is arranged to be in a long hole shape to connect the first connecting base and the friction limiting component, so that when the bridge is structurally deformed due to temperature difference changes, the beam falling prevention device does not generate axial force to respond to the structural changes of the bridge; the joint of the first connecting base and the friction limiting component and the joint of the second connecting base and the friction limiting component are in multi-layer connection, the friction damper and the limiting component are connected in parallel through the friction limiting component, the friction surface and the friction area are increased under the condition that the installation difficulty is not increased, and the beam falling prevention function is enhanced.

The special sealing ring for the mine oil cylinder comprises a sealing body and guide supporting rings arranged on the two sides of the sealing body, a sealing lip is arranged on the outer side of the sealing body, and the sealing lip is in transition connection with the end face of the sealing body through an inclined face. A self-lubricating oil groove is formed in the inner side of the sealing body. According to the utility model, bidirectional guide support is added, so that the stability of vertical movement of the oil cylinder is improved; the self-lubricating oil groove is additionally formed in the bottom of the sealing body, so that the product can achieve the self-lubricating performance, buffering extrusion can be achieved in the working process of the sealing body, and the sealing effect is enhanced; the sealing ring is simple in structure and convenient to maintain and install, the production time of the sealing ring can be saved, and therefore the damaged sealing ring in the production process can be replaced in time; the structure is simple, and the manufacturing size of the sealing ring can be conveniently adjusted according to the on-site workpiece abrasion condition so as to be suitable for the mine oil cylinder.

The utility model discloses a connecting structure of a moving contact and a contact support, which comprises the contact support, a spring and the moving contact, a contact bridge main body arranged in a mounting cavity of the contact support is arranged in the middle of a contact bridge of the moving contact, and arc-shaped convex surfaces are arranged on two sides of the contact bridge main body along the width direction of the contact bridge. And the inner side wall of the mounting cavity is provided with two arc-shaped concave surfaces which are respectively matched with the two arc-shaped convex surfaces of the contact bridge main body. The contact bridge main body is in motion friction with the contact support through the arc-shaped outer convex surfaces on the two sides, and the friction surface is large, so that the contact bridge is not easy to wear, and the working position of the bridge type contact is still ensured not to be obviously changed after multiple operations.

The present invention relates to the field of testing technology, and specifically to a load-bearing cable wear resistance detection device, comprising a base and a support frame fixed on the base, one end of the rope to be detected is connected to the support frame, and the other end is connected to a counterweight block, a detection rod is provided on the base, one end of the detection rod is provided with a friction block, the friction block is used to press and cooperate with the rope to be detected, the friction block is used to rub the rope to be detected along the length direction of the rope to be detected, and the detection rod is movably arranged on the base so that the detection rod can rotate around the rope to be detected, and then the friction block can rub the rope to be detected along the outer circumference. The present invention can perform more comprehensive detection of the circumference of the rope to be detected and improve the detection effect.

The invention discloses a novel mara puller for an excavator, and relates to the technical field of building equipment. Comprising a shaft barrel, a section is arranged in the shaft barrel, two pairs of first threaded holes are formed in the shaft barrel and located on one side of the section, two pairs of second threaded holes are formed in the shaft barrel and located on the other side of the section, and jackscrew threaded holes are formed in the shaft barrel and located between the two pairs of second threaded holes. A pair of fixing threaded holes is formed in the bottom of the shaft barrel, convex faces are arranged on the two sides of the shaft barrel, and a built-in sleeve is arranged in the shaft barrel. A structure convenient to replace is designed, the device does not need to be pressed, after the rotating shaft is inserted, the rotating shaft can be directly replaced, screws and nuts penetrate through two pairs of first threaded holes and second threaded holes correspondingly, the interior of the sleeve is fixed, the rotating shaft is tightly sleeved, the sealing performance is good, the device is suitable for riverway excavation, the contact face and the friction face are increased, and the shaft is not prone to being broken; and the service life is 8-10 years, the cost is low, and a driver can directly replace the device quickly and conveniently.

The utility model relates to the technical field of supports, and provides a friction type support for a floating system, which aims at solving the problems that in the existing floating system and semi-floating system bridges, when a vehicle quickly passes through a beam end expansion joint, the bridge longitudinally moves, the driving comfort and safety are influenced, and the bridge structure is influenced. Comprising a support body, and friction damping components are arranged on the two sides of the support body in the transverse bridge direction. The support body comprises an upper structure and a lower structure, the lower structure comprises a ball basin and a bottom plate, and the ball basin and the bottom plate can relatively slide in the longitudinal direction; the friction damping component comprises a friction plate located between the ball basin and the inner side wall of the bottom plate, a pressing plate and a pressing part, the friction plate is installed on the ball basin, the pressing part is connected to the bottom plate, the pressing plate is pressed on the friction plate through the pressing part, and a sliding pair is formed between the pressing plate and the friction plate; longitudinal movement of the bridge can be effectively restrained, driving comfort is improved, and safety of the bridge structure is improved.

This invention discloses a double take-up mechanism and textile machine for high-tension warp yarn fabrics, belonging to the technical field of fabric textile equipment. The application includes a main support frame disposed at the outlet of the textile machine; a first take-up assembly including a first take-up roller, a first guide roller, and a first transition roller arranged parallel to the main support frame; a second take-up assembly disposed on the main support frame, the second take-up assembly including a second take-up roller and a second guide roller; and a tension roller disposed between the first and second take-up assemblies. The maximum winding arc length of the fabric wound around the first take-up roller after exiting the textile machine is greater than half of its outer circumference. Through this invention, a double take-up method is used to wind up the fabric, and the tension roller adjusts the take-up tension of the entire take-up mechanism in real time, ensuring the take-up tension of the fabric, thus making it better suited for high-density fabric textiles.