90results about How to "No sliding friction" patented technology

The invention relates to a device capable of elastically clamping two ends of a long hole. The device comprises a central spindle, wherein a left taper sleeve is arranged at one end of the central spindle, and a right taper sleeve is arranged at the other end; elastic clamping heads are arranged at correspondingly connected ends of the left taper sleeve and the right taper sleeve; a plurality of flexible open slots are evenly distributed on peripheral surfaces of the elastic clamping heads; and the ends of the left and right taper sleeves connected with the elastic clamping heads are both extended into the elastic clamping heads. The elastic clamping device provided by the invention is simple in structure and low in manufacturing cost and has the following advantages: when a locknut is screwed, the right taper sleeve can be pushed to move to cause the elastic clamping heads to extend outwardly, thus achieving the purpose of fastening and installing a workpiece; in addition, when the locknut is loosened, the elastic clamping heads shrink and the processed workpiece is convenient to remove; the workpiece is fixed effectively and reliably, and the stability of process quality is improved greatly; since the elastic clamping heads have low requirements on hole tolerance of a blank to be processed, the manufacturing cost is reduced; since the elastic clamping device provided by the invention is convenient to clamp, the work efficiency is improved greatly; and the elastic clamping device provided by the invention has a wide application scope and longer service life because of no sliding friction.

The invention belongs to the technical field of laser cutting and particularly relates to a laser continuous cutting device having a dedusting function. The laser continuous cutting device comprises a dedusting mechanism and a laser cutting mechanism. The laser cutting mechanism comprises a laser head and a cushion seat module. The cushion seat module comprises a center shaft, a rotating roller and a fixed roller. The rotating roller and the fixed roller have the same radius, the fixed roller is connected with the rotating roller through the center shaft and is fixed relative to the center shaft, and the rotating roller can rotate relative to the center shaft. When a pole piece is cut, the pole piece adheres to the rotating roller by means of tension provided by mechanical transmission during the feeding, and a to-be-cut pole lug reserved area on the pole piece adheres to the fixed roller. The linear velocity of the rotating roller and the feeding speed of the pole piece are the same, so that no sliding friction occurs between the pole piece and the rotating roller, and the damage to the pole piece caused by the sliding friction between the pole piece and the rotating roller is avoided.

The invention relates to a linear piezoelectric motor. The linear piezoelectric motor includes a drive pre-tensioning mechanism, an output mechanism and a bearing pedestal, wherein the drive pre-tensioning mechanism includes a pair of driving vibrators on the pedestal; the pair of driving vibrators are each provided with a vibrator piezoelectric patch; the output mechanism includes an output rod; the middle part of the output rod is provided with a +-shaped framework in the axial direction; two side bars of the +- shaped framework are vibration plates; and the vibration piezoelectric patches are arranged on the vibration plates. The linear piezoelectric motor controls the bending vibration modal of the vibration plates and the driving vibrators by means of the waveform synthesis principle so as to form coordinate action between the vibration plates and the driving vibrators to realize linear motion, and does not generate sliding friction in theory, thus being less in energy loss and being high in efficiency. The operating frequency of the linear piezoelectric motor is greater than 2000Hz; the linear piezoelectric motor has high output speed and has two operating states; and the linear piezoelectric motor can realize low speed high torque output and high speed low torque output through high and low level coordination of the first and second driving vibrators.

The invention discloses a rope guider, which includes basic frame, sledge, upper guide roller and lower guide roller. The aforementioned sledge is movably setup at the basic frame along the wire direction of basic frame, the upper guide roller and the lower guide roller are rotatablely installed at the sledge, wherein the lower guide roller is under the upper guide roller and in the perpendicular direction there is a preconcerted distance between the upper guide roller and lower guide roller. The invention can reduce the abrasion of the upper and lower guide rollers to anchor line and prolong the service life of anchor line as the sledge can move along the basic frame.

The invention relates to a double-effect film air pressure or hydraulic cylinder using pressure air or liquid as power, which includes the shell and film of the cylinder. The double-effect film plate air pressure or hydraulic cylinder is made up of at least one group, each shell is assembled with two film plates including a big one and small one, and forms tow sealed cavities, which is divided into cavity with pole and cavity without pole; the pushing pole penetrates the two film plate, and they are connected to the film plate and sealed. There has a cavity air and liquid nozzle in the cavity with a pole on top of the middle shell and the post shell, and the inlet and outlet of the air pressure and hydraulic in the cavity without pole; according to the demands, it can form several groups of double-effect film plate air pressure and hydraulic cylinder, thus the air pressure and hydraulic pushing poles can generate multiplied forces.

The invention discloses a "well" shaped intersecting vehicle running track, which comprises a bearing surface for carrying the weight of the vehicle and a limiting surface for limiting the axial displacement of wheels. The bearing surface and the limiting surface are bilaterally symmetrical, and the section is in the shape of "convex". The invention solves the defects of the existing "I"-shaped track that the bearing surface cannot be continuous at the vertical and horizontal intersections, the vehicle is not running smoothly, and the limit surface and the wheel edge have high friction. The vehicle running track of the invention runs smoothly at the intersection, has small friction, and the force on the bearing surface is symmetrical and even.

The invention relates to a bending device capable of adjusting the pipe angle. The bending device comprises a supporting frame. A fixing plate is arranged at the upper portion of the supporting frame. A rotary shaft is arranged at the lower portion of the center of the fixing plate, the lower end of the rotary shaft is connected with a rotating motor, and the rotating motor is connected with an angle sensor. A rotary disc is fixedly connected with the upper portion of the rotary shaft. A limiting blocking piece is arranged at the outer edge of the rotary disc, and a supporting base is arranged at the lower portion of the rotary disc. A main bending wheel is connected with the upper end of the rotary shaft, and an arc groove is formed in the outer edge of the main bending wheel. An auxiliary bending wheel is arranged on one side of the upper surface of the rotary disc. A fixing base and a reset switch are arranged on the upper surface of the fixing plate. A supporting plate is arranged on the upper surface of the fixing base. Pipe fixing bases A and pipe fixing bases B are arranged at the end of the upper surface of the supporting plate. A connecting rod is arranged between the pipe fixing bases B and connected with a threaded rod, and a hand wheel is arranged at one end of the threaded rod. The bending device capable of adjusting the pipe angle has the beneficial effects of being simple in structure, reasonable in design and high in production efficiency, reducing the labor intensity of workers and facilitating adjustment of the bending angle.

The invention discloses a free noninvasive endoscope pushing device which comprises an inner film tube assembly and an outer film tube assembly. The inner film tube assembly is used for pushing a lens, and the outer film tube assembly sleeves the outside of the inner film tube assembly; the inner film tube assembly and the outer film tube assembly respectively comprise liquid-filled film tubes, and the outer wall of the film tube of the inner film tube assembly is in contact with the inner wall of the film tube of the outer film tube assembly under the effects of liquid pressures; the inner wall of the outer film tube assembly is driven to be extended when the inner film tube assembly moves. The free noninvasive endoscope pushing device has the advantages that the pushing speeds can be controlled, the pushing device can be taken out instantly, and accordingly the examination operation time can be greatly shortened; sliding friction between the pushing device and the inner walls of the small intestines of patients can be prevented, and accordingly noninvasive examination can be carried out on the small intestines of the patients.

The invention discloses a plunger part of a high pressure plunger type hydraulic pump. The plunger part of the high pressure plunger type hydraulic pump comprises a plunger body and a sliding shoe connected with the front end of the plunger body; the front end of the plunger body is provided with a ball head used for being wrapped by the sliding shoe; a hole cavity for hydraulic oil flowing is formed in the plunger body; a through hole communicated with the hole cavity is formed in the portion, behind the ball head, of the plunger body; a check valve used for guaranteeing one-way flowing of hydraulic oil is arranged in the hole cavity; and when the hydraulic pump works, the plunger part is pushed to reciprocate, and the hydraulic oil is pushed by the plunger part to achieve one-way flowingthrough the hole cavity in the plunger body. The structural change is large, the plunger part is matched with the existing high pressure plunger type hydraulic pump, the pulling and disengaging forceof the plunger body and the sliding shoe is very small, the acting force of a reset spring is located on the plunger body, and therefore the closing requirement of the plunger part is greatly lowered; and meanwhile, the sliding shoe in the scheme is free of sliding friction, a plunger pair is free of complicated stress, the work stability is improved, and the service life of the plunger part is greatly prolonged.

The invention belongs to the field metallurgical equipment, in particular to an expansion and shrinkage seamless recoiling machine of radial oil cylinders of a twenty-high roll steel plate cold rolling mill. The recoiling machine is characterized in that four radial oil cylinders are radially distributed by a revolution main shaft in a four-leaved block in a way that the four radial oil cylinders are vertical with each other; the four-leaved boosting pistons of the four radial oil cylinders are radially connected with telescopic oblique blocks; the triangular oblique planes of the telescopic oblique blocks form interval connection with the four-leaved block; the four-leaved boosting pistons make telescopic movement after pressure oil respectively enters the four radial oil cylinders, the four-leaved boosting pistons drive the connected oblique blocks to also make the telescopic movement, and then the four telescopic oblique blocks push the four-leaved block to be expanded and shrunk, and meanwhile, under the action of the four-leaved boosting pistons, the four-leaved block is smoothly retracted and forms gaps with coiled stocks, which is beneficial to debatching. The invention provides the expansion and shrinkage seamless recoiling machine of the radial oil cylinders of the twenty-high roll steel plate cold rolling mill, with good processing manufacturability, high precision, flexible movement, convenient use and long service life.

The invention discloses an automatic rope erecting system between tall buildings. The system aims at achieving automatic erecting of a rope capable of doing reciprocated motion between roofs of two tall buildings. The system comprises stand columns on the roofs and an unmanned aerial vehicle for conveying the rope, the tops of the stand columns are in smooth blunt tip shapes, the middle of each stand column is sleeved with a pulley, the outer ring of the pulleys is slightly smaller than the diameter of the stand columns, a trumpet-shaped guide rail is arranged on the lower face of an unmannedaerial vehicle body, and is used for guiding the unmanned aerial vehicle to hover above the stand columns, a ring of hooks are arranged on the lower face of the unmanned aerial vehicle body in a manner of surrounding the trumpet-shaped guide rail, the rope required to be erected is hung on the hooks around the trumpet-shaped guide rail, after the rope is hung, the hooks are put away to ensure thatthe rope cannot fall off from the unmanned aerial vehicle in the conveying process, after the unmanned aerial vehicle hovers above the stand columns, the hooks are opened to enable a rope sleeve to fall to sleeve the stand columns, and the rope sleeve further slides to sleeve the pulleys of the lower ends of the stand columns. The erected rope can do reciprocation motion around the pulleys, and the rope can conveniently convey the persons and goods and materials in a reciprocated manner between the roofs of the tall buildings.

The invention discloses a high-strength low-resistivity high-voltage transmission power cable, which comprises three conductors, conductor shielding layers, an insulated layer, a protection layer, a cylindrical fixing device, a remote breakpoint detection unit and N terminal breakpoint detection units, wherein the conductor shielding layers are arranged outside the conductors; the insulated layers are arranged outside the conductor shielding layers; the three conductors are arranged in the protection layer; the cylindrical fixing device is located in the protection layer; the side surface of the cylindrical fixing device is provided with three arc-shaped grooves at equal intervals; the three conductors are respectively located in the arc-shaped grooves; the cavity formed between the conductors, the cylindrical fixing device and the protection layer is filled with an insulated filler; and the N terminal breakpoint detection units are arranged on the high-strength low-resistivity high-voltage transmission power cable line at equal intervals. The problem of short circuit caused by friction does not happen, the breakpoint can be quickly judged once the broken circuit problem happens to the power cable, and the wire core has high strength and low resistivity.

The invention relates to a universal chuck device for a cylindrical grinding machine. The device is characterized by comprising a first clamping block and a second clamping block which are symmetrically arranged, wherein an adjusting bolt and a fastening bolt are arranged at the left ends and the right ends of the first clamping block and the second clamping block respectively; the first clamping block is connected with the second clamping block through the adjusting bolt and the fastening bolt; one end of the fastening bolt is fixedly connected with the first clamping block through a fixing nut, and the other end of the fastening bolt is provided with a fastening nut for fixing the fastening bolt and the second clamping block; one end of the adjusting bolt is fixedly connected with the first clamping block through the fixing nut, and the other end of the adjusting bolt is provided with an adjusting nut; and inwards recessed clamping surfaces are formed on the middle parts of the sides on which the first clamping block and the second clamping block are arranged oppositely. By the device, a workpiece can be effectively and reliably fixed, and the stability of machining quality is greatly improved; and the device makes clamping convenient and greatly improves working efficiency.

The invention belongs to the technical field of electronic equipment mechanical structures, and relates to a locking strip float mounting mechanism and a mounting method thereof. A float mounting mechanism is employed, grooves and slide blocks are arranged in mounting walls of a module structure, locking strips can be mounted on the module structure in a float manner, only a positive extrusion force is generated between each locking strip and a corresponding guide-track groove, the locking strip and the corresponding guide-track groove do not generate sliding friction, and locking of the locking strips is avoided. The locking strip float mounting mechanism is simple in structure and convenient to use, and can effectively overcome the locking problem of locking strip wedge blocks.