45results about How to "Avoid tooth skipping" patented technology

The invention provides an intelligent control system and a control method for a scraper conveyer, which belong to the intelligent control systems for coal mine exploitation. The intelligent control system for the scraper conveyer comprises a laser scanning ranging device, a ray ranging transmitter, an ultrasonic level sensor, a current transducer, a master controller, a variable frequency and speed regulation controller, a coal crushing controller, a conveyor gesture controller and a conveyor chain stretching controller, wherein the laser scanning ranging device, the ray ranging transmitter, the ultrasonic level sensor and the current transducer transmit detection signals to the master controller in a wireless communication manner, and the master controller sends control instructions to the variable frequency and speed regulation controller, the coal crushing controller, the conveyor gesture controller and the conveyor chain stretching controller in the wireless communication manner. The running state of the scraper conveyer is mastered at any time and corresponding devices are controlled timely through monitoring of the laser scanning ranging device, the ray ranging transmitter, the ultrasonic level sensor and the current transducer, so that the scraper conveyer can be operated in an optimum running state.

The invention discloses a synchronous belt anti-vibration tensioning device. The synchronous belt anti-vibration tensioning device comprises a machine base plate, an adjusting plate, a drive rotating shaft, a synchronous belt wheel, a synchronous belt and an adjusting structure; a first long groove hole and an adjusting fixing plate are arranged on the machine base plate, a shaft hole is formed in the middle of the adjusting plate, an adjusting hole is formed in the adjusting plate, four second long groove holes are formed in the adjusting plate, the adjusting plate and the machine base plate are connected in a manner that bolts penetrate the second long groove holes, the position of the shaft hole corresponds to the position of the first long groove hole in the machine base plate, the drive rotating shaft penetrates the first long groove hole and the shaft hole to be connected with the synchronous belt wheel, the synchronous belt is connected with the synchronous belt wheel, and the adjusting structure is composed of a bolt part, a first tightening nut, a blocking piece, a spring, a membrane spring and a second tightening nut. According to the technical scheme, wear of the synchronous belt is reduced, tensioning reliability and mechanical vibration resistance performance are ensured, and the phenomenon that tooth jumping appears in the synchronous belt is avoided.

The invention discloses a film combining machine, which comprises a forming device, a glue coating device, a material driving device, an electric control device and a speed synchronization device, wherein the forming device, the glue coating device, the material driving device, the electric control device and the speed synchronization device are arranged on a machine frame, the glue coating device comprises a glue outlet mechanism and a glue extruding mechanism for supplying glue to the glue outlet mechanism, the glue outlet mechanism is directly connected with a glue outlet of the glue extruding mechanism, and the glue extruding mechanism is arranged on a horizontal driving mechanism so that the glue outlet mechanism only moves in the horizontal direction for coating the glue. The film combining machine has the advantages that the structure is simple, the cost is low, the reliability and the harmony are high, the installation and the debugging are convenient, the production capacity and the production efficiency are greatly improved, and the like.

The invention discloses a variable stiffness tension device. The variable stiffness tension device comprises a piston rod, a support seat, a small stiffness spring, a small locking nut, a sleeve, a locating plate, a large stiffness spring and a large locking nut, wherein the piston rod penetrates through one end of a cylinder barrel in a telescopic mode, the support seat penetrates through the other end of the cylinder barrel in a telescopic mode, the small stiffness spring is arranged on the outer side end surface of the cylinder barrel in a sleeving mode, the small locking nut is connected with the support seat, the sleeve is arranged on the outer side end surface of the small stiffness spring in a sleeving mode, the locating plate is fixedly arranged at the end of the sleeve in a sleeving mode, the large stiffness spring is arranged on the outer side end surface of the sleeve in a sleeving mode, and the large locking nut is connected with the locating plate. By using the variable stiffness tension device, when the borne load is smaller, the external force is transferred to the piston rod, the piston rod transfers the force to the support seat and the small stiffness spring, and the small stiffness spring plays a buffer role; when the borne load is gradually increased, the support seat makes contact with the locating plate, the locating plate transfers the load to the large stiffness spring, and the large stiffness spring and the small stiffness spring jointly bear the load.

The invention discloses a mounting design structure of an assembled three-dimensional carved slope modeling background wall. The mounting design structure comprises a wall surface base layer, a background wall, a connecting piece and a hanging piece, wherein the connecting piece is fixedly connected to the wall surface base layer; a mounting cavity is formed in the connecting piece; the mounting cavity is arranged in the height direction of the connecting piece; an adjusting knob is arranged on one side, opposite to the wall surface base layer, of the connecting piece; one end of the adjusting knob extends into the mounting cavity; the first end of the hanging piece is connected to the background wall; the second end of the hanging piece is inserted into the mounting cavity; an adjusting long hole is formed in the second end; racks are arranged on the two sides of the adjusting long hole respectively; and a gear part on the adjusting knob is in meshed transmission connection with the racks. According to the mounting design structure, the adjusting knob and the racks are arranged, so that the background wall can be finely adjusted up and down, and therefore, the problems that the embossed background wall cannot be adjusted after being installed, the replacement is difficult, and the installation efficiency is low can be solved.

The invention discloses a synchronous belt conveying structure for glass tooling plate trolley handling. The synchronous belt conveying structure comprises conveying line bodies. Each conveying line body comprises a driving shaft assembly, tensioning assemblies, upper idler assemblies, lower idler assemblies and a synchronous belt, wherein the driving shaft assembly, the tensioning assemblies, theupper idler assemblies and the lower idler assemblies are connected in series through the synchronous belt. The tensioning assemblies from top to bottom are mounted at intervals of a certain distance, the number of teeth, engaged with idlers, on the conveying side on each synchronous belt is increased, thus the slippage phenomenon caused by asynchronous rotation of the synchronous belts and the idlers during fast starting and stopping is avoided, and the conveying stability of tooling plate trolleys is improved; by improving the structures of the driving shaft assemblies and the idler assemblies, assembling, disassembling and maintenance of the synchronous belts are more convenient and faster, the tensioning assemblies only need to be loosened, driving shafts are disassembled, then the synchronous belts can be drawn out from gaps between the idlers and profiles, assembling and disassembling of more structures are not needed, and the manpower cost and the time cost of maintenance of the synchronous belts are reduced; and vibration noise of original chain transmission is avoided.

The invention relates to a method for adjusting a tensioning wheel indicator of a timing system of an engine, which is used for solving the problems that the tensioning wheel indicator is easily unjammed and a tensioning force becomes small by adopting a traditional method for adjusting the tensioning wheel indicator of the timing system of the engine. According to the method, the best initial position for adjusting the tensioning wheel indicator is found out through a sampling test, and then, the position of the tensioning wheel indicator of the timing system is adjusted according to the actual indicator adjustment range found out by the sampling test, thereby, a mesh clearance between an engine wheel set and a belt is offset, so that the indicator is unjammed to a nominal range after the engine normally wears in and is cooled. By adopting the method, the adjustment position of the tensioning wheel indicator of the timing system can be accurately determined, thereby, the tensioning wheel indicator of the timing system is prevented from being unjammed, and the engine is prevented from generating a slippage phenomenon.

The invention relates to a device used for an engine and acting on a timing belt or chain, in particular to an engine chain timing system. A high-intensity nylon chain wheel structure is adopted, so that original steel-steel contact between a chain and chain wheels is converted into nylon-steel contact; oil-resistant rubber is arranged below the position, between every two adjacent teeth of the chain wheels, of the tooth root circle; in the process that the chain is pinched into the chain wheels, a chain connection board makes contact with the oil-resistant rubber firstly, and then rollers are pinched into the chain wheels, so that the pinching impact between the rollers and the chain wheels is greatly reduced, the NVH of the chain timing system is improved, and the system moves more stably and silently. Idler wheels are additionally arranged on a guide rail, so that sliding fiction between a chain plate on the chain and a guide rail in the prior art is changed into rolling friction between the rollers and the guide rail, the friction loss of the system is reduced, and the fuel utilization ratio of the engine is increased. A sensor used for detecting whether a plunger bounces up completely or not is also additionally arranged in an expansion machine and can remind a driver of replacing the chain timing system in time, and major quality accidents of the engine are avoided.

The invention discloses a timing cover of an engine, comprising a cover body (8), wherein the cover body (8) is provided with an engine oil collecting groove and a crankshaft hole (7); the periphery of the crankshaft hole (7) is provided with an oil seal installing step (3) for installing an oil seal; the cover body (8) is provided with a slippage baffle (4); and the timing cover body (8) of the engine is provided with a sound-absorbing coating (5), and the timing cover of the engine is punched and molded by steel plates and is used for a timing chain driving engine and a timing belt driving engine. In the timing cover of the engine, the structure is compact, the strength is higher, the noise of the engine can be effectively reduced, the processing cost can be saved, multiple functions are achieved, the engine configuration is more reasonable and more compact, the volume is small, the weight is light, and the comport of the whole vehicle can be effectively improved.

The invention provides a multi-wedge-belt cutter which comprises a fixed support, a support roller, a guide roller, a cutter, a tension roller, and a drive device and a tension device arranged on thefixed support. One end of the support roller is arranged on the fixed support; the guide roller, the tension roller and the support roller are arranged in parallel in the axial direction; the drive device is connected with the guide roller so as to drive the guide roller to move in the direction perpendicular to the axis of the support roller; the tension device is connected with one end of the tension roller so as to drive the tension roller to move in the direction perpendicular to the axis of the support roller; the tension roller can rotate relative to the tension device; and teeth segmentally distributed in the axis direction of the guide roller are arranged on the outer circumference face of the guide roller. The occurrence of the phenomenon of more wedges, less wedges or semi-wedgesduring multi-wedge-belt cutting is reduced.

The creation of the invention discloses a rolling juicer cup comprising a cup lid (1), a cup body (2) and a cup holder (8). The rolling juicer cup is characterized in that the cup body (2) is removably fixed on cup holder (8); the cup holder (8) is provided with a rotatable worm shaft (6) fixed with a rotary cutter head (4); the rotary cutter head (4) is located in the cup body (2); the cup holder(8) is internally provided with a worm support seat (18) which is in semi-circular rotation fit with the worm shaft (6) and plays a supporting role; a worm gear (7) meshing with a worm of the worm shaft (6) is arranged on cup holder (8) which is located on the other side and opposite to the worm support seat (18); the worm support seat (18) cooperates with the worm gear (7) to guarantee force balance when the worm shaft (6) rotates; the worm gear (7) is provided with a wheel shaft (9) capable of rotating relative to the cup holder (8); both ends of the wheel shaft are correspondingly providedwith a left and a right wheel (11) that can rotate in one direction. With the above-mentioned structure, the rolling juicer cup has the such advantages as simple and reasonable structure, easy operation, quick juice extraction, high work efficiency and convenient collection and carrying.

The invention discloses a crossing frame telescopic main arm which comprises a first telescopic arm, a second telescopic arm and a third telescopic arm which are nested with one another and can relatively move horizontally, and any two connected telescopic arms relatively move through a transmission mechanism and a chain; any two connected telescopic arms are mutually supported and slide through sliding blocks arranged in the telescopic arms; and an upper surface of the sliding block located on the upper portion of the telescopic arm makes contact with a guide rail plate to facilitate slidingof the sliding block, and the guide rail plate is welded to the lower surfaces of the first telescopic arm and a second telescopic arm top chord. An extending distance is controlled through mutual movement of the three sections of telescopic arms, and net blocking time is controllable.

The invention relates to the bridge dilatation joint technology field, and particularly relates to a comb-type multidirectional displacement bridge telescoping apparatus, wherein, each tooth of a fixed tooth plate is bolted to a fixed beam body; a slide tooth plate is shaft-connected to a slide beam body at the comb back far from the tooth through a rotating shaft apparatus; a gap is left betweena side beam and the slide tooth plate; the slide tooth plate is provided with an elastic straining device between the comb back close to the tooth and the slide beam body for restricting downward displacement of the slide tooth plate and the slide beam body. Compared with prior art, the downward displacement is solved through the relative movement of the slide tooth plate and the fixed beam body;a lower shaft rotates relatively little, which is solved by further compression of a spring; at the same time, the slide tooth plate is pressed on the fixed beam body surface through the spring, preventing jumping gear; furthermore, garbage is removed through a wear resistant-rod arranged under the slide tooth plate, preventing jumping gear caused by the garbage.

The invention discloses a compression roller drive mechanism of a flying saw machine in the flying saw machine field. The compression roller drive mechanism comprises a gear and a rack, wherein the gear and the rack are mutually meshed, the gear is installed on a gear shaft, the end of the gear shaft is in transmission connection with a servo motor, the rack is relatively fixed to a band mill of the flying saw machine, the gear shaft is rotatably arranged on a machine frame, and the positions, locating on the two sides of the gear, of the gear shaft are respectively and rotatably provided with a carrier roller; the rack is installed on the lower side of a rack base, the two sides of the rack base are respectively provided with a protruding portion which protrudes out of the two sides of the rack, the lower side of each protruding portion is correspondingly supported on each carrier roller, a compression roller is further arranged on the machine frame and arranged on the upper surface of the rack base in a matched mode, and the axis of the compression roller is parallel to that of the gear shaft. According to the compression roller drive mechanism, a proper gap is formed between the gear and the rack, so that transmission accuracy is guaranteed, and abrasion between the gear and the rack is reduced; due to the fact that the compression roller limits bouncing of the rack from above the rack, a gear and rack action line is prevented from being moved outwards. The compression roller drive mechanism is applied to the flying saw machine, and has the effect of improving the movement accuracy of the flying saw machine.

The invention discloses a double-mast-type tracking photovoltaic support. The support is characterized by comprising linear guide rails, a horizontal guide rail, first and second slide blocks, a support plate of a photovoltaic panel, and left and right head masts vertical to the horizontal plane, each head mast is provided with a hoisting mechanism, the linear guide rails are arranged in the axialedges of the left and right head masts respectively, the first and second slide blocks are connected with the linear guide rails of the left and right head masts respectively, one end of the supportplate of the photovoltaic panel is provided with a cylindrical slideway, the slideway is positioned in the end portion of one side of the support plate of the photovoltaic panel and is parallel with the side, the first slide block is connected with a fixed corner of the support plate of the photovoltaic panel, the second slide block is connected with the slideway, and a horizontal slide block on the horizontal guide rail is connected with the intermediate point of a side opposite to the slide block connecting side of the support plate of the photovoltaic panel. The angle of the support plate of the photovoltaic panel can be adjusted by controlling relative positions of three points, and the defect that a bi-axial tracking photovoltaic support is not strong enough to support the large-areasupport plate of the photovoltaic panel in the prior art can be overcome.

The invention discloses a technology of an engine timing system, and relates to a timing chain wheel shell. The timing chain wheel shell comprises a chain wheel cover cap, connecting holes are formed in the edge of the chain wheel cover cap, an intake camshaft groove and an exhaust camshaft groove are formed in the top of the chain wheel cover cap, and are respectively formed in the outside and the inside of the chain wheel cover cap respectively; semicircular rubber plugs are filled in the intake camshaft groove and the exhaust camshaft groove; an air phase commutation guide wheel is arranged between the grooves; a chain guiding groove is formed in a part, which is close to the exhaust camshaft groove, of the inner side of the chain wheel cover cap; and a crankshaft chain wheel is further arranged on the chain wheel cover cap, and is connected with a volute guiding groove. by the chain guiding groove and the volute guiding groove, chain teeth skipping caused by the reason of excessive fluctuation of tension of a timing chain system and the like is prevented, and repairing cost is saved; and during phase commutation, only the semicircular rubber plugs need to be taken down, and the time and labor are saved.