32results about How to "Prevent off-chain" patented technology

The present invention discloses a chain for diamond chain saw, which comprises chain bodies, diamond segments, connecting pieces and a connecting shaft, wherein, two ends of each connecting piece are provided with connecting holes, and two ends of the each chain body are provided with body holes; the connecting pieces are sleeved in the connecting shaft through the connecting holes of the connecting pieces; two ends of the connecting shaft are inserted in and connected fixedly with the body holes at the same ends of the upper and lower chain bodies, and two ends of the upper and lower chain bodies are connected movably with one end of the adjacent connecting piece respectively; the diamond segments are connected fixedly on the upper and lower chain bodies, and a sealing washer of the connecting shaft is arranged between the connecting pieces and the upper and lower chain bodies. The present invention is not easy to produce chain removal or rupture, and can be used for sawing and cutting the materials with strong grinding performance, such as segments, concrete, and so on. The connecting pieces of the present invention are also able to be provided with protection teeth whose anglesface to the diamond segments so as to avoid the edges of the diamond segments from breaking and improve the sharpness of the present invention.

The invention discloses a chain wheel conveyor. The chain wheel conveyor comprises a conveyor support, a reel chain, a transmission gear and a plurality of rollers. A driving chain wheel is disposed on the end portion of at least one side of the conveyor support, and a driven chain wheel is disposed at the other end, relative to the driving chain wheel, of the conveyor support. The driving chain wheel is connected with the driven chain wheel through the reel chain, and rotating chain wheels are arranged on the end portions of the rollers. The reel chain is placed on the lower portions of the rotating chain wheels, and the reel chain meshes with the rotating chain wheels. The two ends of the rollers are fixed to the conveyor support. The transmission gear is connected with the driving chainwheel, and drives the rotation of the driving chain wheel, thereby sequentially driving the transmission of the reel chain and the rotation of the rotating chain wheels. The chain wheel conveyor hasa simple structure, rapid maintenance, convenient installation and disassembly and a long service life.

The embodiment of the invention relates to the technical field of block chains, in particular to a league chain signature generating method and device. A corresponding multiple signature can be generated specific to each block in a league chain in order to determine the identity of each block efficiently and safely. When the league chain is extended or bifurcated, the chain disconnection caused byindefinite identity of the blocks can be avoided.

The invention discloses a rear derailleur used for a bicycle. The rear derailleur is locked on one side of a fork end of a bicycle frame, and contains a screw rod seat, a screw rod, a speed change connecting rod, a bitch chain connecting rod and a connecting rod control line. When a front derailleur pulls or loosens speed change cables, the speed change connecting rod is capable of sliding on the screw rod seat forward and backward; meanwhile a foot end of the connecting rod control line can also pull the bitch chain connecting rod to rotate, change the end point of the bitch chain connecting rod rotating under the action of a return spring, so that the effects of speed change advancing gear, positioning gear, speed change reducing gear and angle positioning of the bitch chain steering wheel can be achieved, the speed change connecting rod and the bitch chain steering wheel cannot rotate to change the positions, and a chain-off phenomenon is avoided; when gear ratio of a flywheel is changed, due to the pulling of the connecting rod control line, the speed change connecting rod can rotate to change the position so as to adjust the angle of the bitch chain steering wheel for tensioning the chain, and the chain-off phenomenon is avoided.

The invention relates to the field of crawler belt detachment prevention, in particular to a crawler-type agricultural machinery running mechanism with a broken function of preventing detachment of the chain, including a main body of the running mechanism, a track shoe body, a driving wheel, and a load wheel. The upper end of the lower pressure chamber is movable with an anti-off plate, the inside of the road wheel is equipped with an anti-off rod, and the inner side of the track shoe body is fixedly connected with an anti-off protrusion, and the obtuse angled protrusion facing the side of the lower pressure chamber by pressing down the vibrating plate , and the sharp-angled bump on the side of the fixed vibrating plate facing the outside of the lower pressure chamber, contact and collide to generate vibrations, so that the edges and corners of the stones are flattened or shattered, so that the effect of preventing the stones from falling off the chain is improved, and then through the inside of the anti-falling plate. The vibrating chamber, and the internal vibrating block is set in a pentagonal shape, then when the down-pressing vibrating plate contacts the fixed vibrating plate to generate vibration, the vibrating block can collide with the vibrating chamber through its outer edges and corners, thereby further improving the transmission to the stones. Make it shatter and discharge the vibration frequency.

The invention discloses a movable type multidirectional code scanning device for smokebox storage. First stand columns are fixedly mounted at four corners of a base; the upper parts of the front and rear first stand columns are connected through a longitudinal beam; a guide groove is formed in each of the longitudinal beam and a transverse beam; an adjusting rod is arranged on one side of the transverse beam; a code scanner is fixedly connected with the adjusting rod through a T-shaped plate; a bearing pedestal is arranged on one side of the upper part of the base; a rotary shaft is arranged in the bearing pedestal; a rotary disc is fixedly connected with the upper end of the rotary shaft; a clamping device is arranged on the rotary disc; and a placement table is arranged on one side of the upper part of the clamping device. According to the movable type multidirectional code scanning device, the longitudinal beam and the transverse beam are arranged on a rack; the code scanner is mounted on the transverse beam and moves on the transverse beam vertically and transversely; in addition, the transverse beam is mounted on the longitudinal beam through a first sliding block, so that multidirectional movable code scanning of the code scanner is realized; and moreover, the clamping device for positioning a smokebox is arranged at the lower part of the placement table, so that the situation that a worker overturns the smokebox to and fro to adjust the position of a bar code is avoided, the labor strength of the worker is reduced, and the cigarettes and tobacco storage efficiency isimproved.

The folding bicycle includes a frame, a handlebar support, a saddle, a front fork, a pedal mechanism, a handlebar, a front wheel, a first drive device, a second drive device and other parts. The first drive device on the frame has input end fitting the pedal mechanism, and the foldable second drive device on the frame is connected to the back wheel and has input end capable of being fitted to the output end of the first drive device and output end fitted to the back wheel. The folding bicycle has no chain falling during folding and small size after being folded for easy carrying.

The invention relates to a mineral powder elevator casing sealing structure. The sealing structure comprises an elevator casing, driven components, wool felts, angle steel guide rails, casing pressing plates, adjusting pressing plates and adjusting bolts. One side of each wool felt is adhered to the corresponding casing pressing plate, and the other side of the same tightly presses the elevator casing. The angle steel guide rails are welded onto the elevator casing, and each adjusting pressing plate is fastened and tightly pressed on the corresponding angle steel guide rail through the corresponding adjusting bolts. The casing pressing plates tightly press the corresponding wool felts on the elevator casing, and the driven components are fixed on the corresponding casing pressing plates via bolts. The sealing structure is compact and reasonable in structure; good sealing of an elevator is guaranteed by adjustment, verticality of driving components and the driven components of the elevator is ensured, and a chain is prevented from separation or off-tracking; convenience, time saving and labor saving in adjustment are realized; when the elevator is used for elevating aggregate, the driving components drive the driven components to run together through a plate link chain or endless chain, and certain tensity of the plate link chain or endless chain can be guaranteed.

The invention provides a control system and method for a chain transmission tensioning device, which is used to control the chain transmission tensioning device to solve the problem of chain slack during the chain transmission process. The control system specifically includes an acoustic emission detection unit, a motion control unit, a position detection unit, a comparison unit, a display unit and a PLC control system. Among them, the acoustic emission detection unit is used to collect the acoustic emission signal generated during the chain transmission process; the motion control unit is used to control the tensioning motor and the brake motor; the position detection unit is used to control the displacement stroke of the braking mechanism and detect the rotation of the tensioning mechanism The comparison unit and the display unit are used to compare and display relevant data respectively; the PLC control system includes a feedback module, a delay module and an early warning module, and the early warning module is used to estimate the remaining service life of the chain and remind the staff to replace the chain. The control system and control method can quickly, effectively and accurately control the chain transmission tensioning device to solve the chain slack problem.

The invention relates to an oscillating buoy type ocean wave power generating device. The oscillating buoy type ocean wave power generating device comprises a wave power absorbing device which floats on the sea, a supporting device which is connected with the wave power absorbing device by a sliding device, a conversion device and an output device which is connected with the conversion device. The supporting device comprises an upper supporting frame and a lower supporting frame which are arranged in parallel and with same axle center. The upper supporting frame and the lower supporting frame are both mounted on an ocean column in a sleeving manner. A main shaft of the conversion device is connected with a generator rotary shaft of an input device. According to the device, the up-and-down reciprocating motion of wave can be converted into the rotation of the main shaft through sprocket chain transmission. The main shaft is connected with a energy storage flywheel, so that an electric generator can run stably during the conversion of the ascending and descending of the wave power absorbing device under the action of the wave. The continuity of power generating can be guaranteed, so that the stability of power generating can be guaranteed.

The invention discloses a dismantling device for a bearing in a hole. An inner cylinder is threadedly connected inside an outer cylinder, a plurality of second handles are arranged on the upper part of the inner cylinder, a ejector rod is threadedly connected to the middle part of the inner cylinder, and a cone The upper end of the ejector rod is provided with a first handle; the lower part of the inner cylinder is provided with at least two installation grooves, the installation grooves are movably connected with a card arm, one end of the card arm is provided with a first hook, and the outer cylinder is provided with at least two sets of sprockets , the sprocket is installed on the outer wall of the outer cylinder through the fixed shaft, the sprocket is provided with a chain, and the lower end of the chain is provided with a second hook. When the present invention dismantles the bearing in the hole, the second hook is stuck on the bearing seat or other fixed structure first, then the locking arm is inserted into the inner ring of the bearing, the first handle is turned, and the first locking arm at the lower end of the locking arm is clamped by using the tapered head. The hook stretches and hooks the lower end surface of the bearing, and then turns the second handle to raise the inner cylinder and drive the locking arm to move upward, thereby removing the bearing in the hole, ensuring the stability of the bearing removal in the hole and avoiding damage to the bearing.

The invention provides a novel bicycle stepless transmission and belongs to the technical field of transmission in order to solve the problems that in the prior art, a bicycle loses transmission force during speed change, and meanwhile a chain is likely to fall.The novel bicycle stepless transmission comprises a disc framework, a chain wheel system and a hydraulic system.The disc framework comprises a center hexangular disc and rail discs symmetrically arranged on the two sides of the center hexangular disc.The chain wheel system comprises six chain wheel structures.Each chain wheel structure comprises a chain wheel and a U-shaped frame, wherein the U-shaped frame comprises a U-shaped wheel frame and a hydraulic rod, the chain wheel is arranged at the open end of the U-shaped wheel frame, rolling shafts coaxial with the chain wheel are installed on the two sides of the U-shaped wheel frame, the two rolling shafts are matched with notch grooves in the corresponding rail disc, and the hydraulic rod is fixed to the end, opposite to the open end, of the U-shaped wheel frame.The hydraulic rods of the six chain wheel structures are matched with six radial deep holes in the center hexangular disc, and the six chain wheels of the six chain wheel structures are located on the same circumference.The hydraulic system is communicated with six hydraulic oil ways, and the extending length of the hydraulic rods is adjusted.