9 results about "Tooth wear" patented technology

A manufacturing method of a horizontal rotary edge single chain scraper conveyor interval tooth wear-resistant sprocket, comprising the following steps: designing and calculating various important parameters of the sprocket; machining the sprocket body according to the obtained various important parameters of the sprocket; machining the movable lining plate; assembling and fixing the machined sprocket body and the movable lining plate through bolts; and finishing and heat treating the assembled sprocket assembly. The interval tooth wear-resistant sprocket manufactured by the method has a pitch at the sprocket chain nest which is 3 times the pitch of the round link chain, the interval tooth sprocket can be matched with the conventional round link chain, a variable pitch chain does not need to be designed separately, and the universality of the interval tooth sprocket is improved; the sprocket can provide a larger space to avoid interference with the guide scraper; the upper and lower tooth chain nests of the interval tooth sprocket and the upper surface of the lower tooth are subjected to local induction quenching treatment, and the movable lining plate is arranged on the upper surface of the lower tooth to enhance the wear resistance. The application also provides a horizontal rotary edge single chain scraper conveyor interval tooth wear-resistant sprocket.

This invention relates to the field of metal cutting tool technology, and discloses a trapezoidal thread cutting tool with both finishing and compensation functions. The tool includes a tool body and at least one cutting unit disposed on the tool body. The cutting unit includes: a forming tooth with a cutting edge for machining a complete thread shape, the cutting edge including a guide surface bottom arc; and an auxiliary tooth located on one side of the bearing surface of the forming tooth and participating in cutting along with the forming tooth. The auxiliary tooth is spaced from the forming tooth by a full pitch along the tool feed direction, and the auxiliary tooth has a guide surface bottom arc identical in shape and size to the forming tooth. When the forming tooth wears, the auxiliary tooth compensates for and corrects the bottom arc of the thread guide surface during machining. This invention achieves a dual breakthrough in the lifespan and machining quality of a single-tooth trapezoidal thread cutting tool with extremely low additional cost.

The present application relates to surveying instrument calibration technical field, and disclose a kind of high-precision repeated positioning's automatic tightening and loosening prism equipment and method, device includes observation pier, sliding assembly, installation cover, intelligent prism, drive assembly, insertion assembly and auxiliary force component, trapezoidal screw rod of insertion assembly is switched with optical pole section by thread section, so that positioning bolt is in hole before edge transfer side alignment, only circumferential rotation after entering hole, without additional axial thrust;Auxiliary force component is cooperated by electromagnet and tension spring, provides flexible auxiliary force in tooth stage, automatically disengaged after tooth, drive assembly drives trapezoidal screw rod rotation, elastic simply supported beam and strain sensor detect pre-tightening force, sliding assembly realizes accurate limit, the equipment realizes prism automation tightening and loosening, avoids pre-tightening force detection distortion and tooth wear, improves repeated positioning accuracy, stability and operation efficiency, adapts high-precision surveying and mapping and instrument calibration demand.

This invention relates to the field of geotechnical engineering and foundation construction technology, and discloses an actively adjustable reaming drill bit, drilling tool, and construction method. The reaming drill bit includes a drill bit body, a reaming wing, an inclination adjustment mechanism, and a locking mechanism. The reaming wing is hinged to the drill bit body via a hinge shaft. The inclination adjustment mechanism drives the reaming wing to rotate to adjust the inclination angle of the cutting teeth, and the locking mechanism locks the reaming wing at a preset inclination angle position. This invention solves the problems of low drilling efficiency and rapid tooth wear caused by fixed-angle cutting teeth being unable to adapt to complex and variable strata. It also integrates drilling, wall protection, reaming, and pile driving functions into one unit, resulting in high overall construction efficiency and guaranteed pile quality.

This utility model discloses a mold-closing device for double-fastening utility pole molds, belonging to the technical field of utility pole processing. It addresses the problem that existing technologies require using a utility pole mold for mold closure before pouring cement into the mold. However, current utility pole molds suffer from tooth wear, which reduces the fixing effect of the bolts on the two molds. When there are errors in the placement of the upper and lower molds, the shape of the produced utility poles becomes significantly inaccurate, reducing the working efficiency of the mold-closing device. The device includes a worktable, the lower end of which is fixedly connected to four vertical plates. The outer walls of every two vertical plates are rotatably connected to a housing via bearings. The dimensions of two grooves match the corresponding protrusions. Two insert rods movably pass through through holes on the surface of the worktable and are inserted into their corresponding grooves.

The utility model relates to boot technology field, concretely is waterproof and cold -proof boots, including boot cylinder, bottom plate, heating body and heat -preserving cover, is set up restraint band on boot cylinder, the bottom integrative connection sole of boot cylinder is set up recess on sole, bottom plate sets up antiskid tooth on the bottom of bottom plate, heating body sets up in recess, and aluminium foil pad is set up in recess in the bottom of heating body, and insole is set up on sole in the inside of boot cylinder, heat -preserving cover sets up on the outer wall of boot cylinder, and energy storage battery for supplying power to heating body is set up in heat -preserving cover, and the magnetic attraction flip cover for closing its opening is set up on heat -preserving cover, the utility model discloses that the energy storage and control structure are externally hung on boot cylinder, will not influence walking, and through setting up detachable bottom plate structure, it is convenient for replacing in time when antiskid tooth wears out, and simple operation, and the utility model discloses that heating and heat -preserving structure are additionally increased in sole inside, and it is convenient for foot cold -proof.

The utility model relates to the field of belt buckle discloses a detachable fixing belt's belt buckle, including belt buckle main part and collocation apron, belt buckle main part includes the accommodation portion and the buckle portion of both sides setting, the bottom of accommodation portion is provided with the opening boss column for installing collocation apron, collocation apron has the collocation protruding that cooperates with opening boss column, and the collocation protruding is engaged in the opening of opening boss column and makes collocation apron detachably fixed in accommodation portion, and the outer end part of collocation apron x axle direction is provided with the continuous fixed tooth that extends along y axle direction, and the fixed end of belt along x axle direction end enters accommodation portion and is engaged by fixed tooth and is locked through the cooperation of collocation apron and accommodation portion. The utility model makes the end of belt fixed through the detachable collocation apron, and the length and style different belt is convenient to maintain and replace, when the fixed tooth wears seriously under long -term use, only needs to replace collocation apron alone, and the maintenance cost is reduced.

This invention discloses a dynamically adjustable, anti-jamming, and self-heating coal crusher and system for thermal power generation. The coal crusher includes a working platform, a crushing frame, a first drive assembly, two sets of crushing components, a second drive assembly, a dynamic translation assembly, and two sets of cooling components. The crushing frame is fixed inside the working platform. The first drive assembly drives the two sets of crushing components to rotate relative to each other to crush raw coal. The second drive assembly drives the dynamic translation assembly to reciprocate axially to adjust the tooth spacing. The cooling components are linked with the second drive assembly and introduce cooling airflow into the inner cavity of the crushing components. This invention can adaptively adapt to raw coal of different particle sizes, reduce material jamming, adhesion, and blockage, alleviate tooth wear, and simultaneously achieve self-heating to avoid overheating during high-load operation. This effectively improves coal crushing efficiency and equipment stability, meeting the continuous and efficient raw coal processing requirements of thermal power systems.