57results about How to "Does not affect replacement" patented technology

The invention discloses a robot control system and method based on a principal and subordinate teleoperation mechanical arm. The robot control system comprises a principal mechanical arm and information collection plate, a monitoring center PC, a robot principal control panel, a subordinate mechanical arm and FPGA movement control panel and a site environmental information collection plate. The robot control method includes the steps of principal mechanical arm manufacturing and data collection, the control of a subordinate mechanical arm, a trolley and a cradle head, video collection and communication of the robot principal control panel, data collection and communication of the site environmental information collection plate and data display and communication of the monitoring center PC. Under the condition that the complexity of a system is not added, the mechanical arm can be controlled to achieve relatively complex movement. A modularized mode is designed to be used, and modules are in communication through CAN buses. An FPGA is used as a movement control panel, establishing and updating of the system are convenient, and the stability of the system is improved. A robot transmits the video information of a working site and the environmental information of the working site to a monitoring center so that the robot can be controlled to complete more complex operations.

The invention relates to the technical field of tunnel boring machine engineering machinery, in particular to a round cutter box capable of having a disc cutter replaced bidirectionally. The round cutter box capable of having the disc cutter replaced bidirectionally comprises a ringlike cutter box body and two cutter shaft fastening units, wherein the ringlike cutter box body is fixed on a cutter disc and is in a cylindrical shape, the cutter shaft fastening units are arranged at the inner side of the cutter box body and are in central symmetry, and each cutter shaft fastening unit comprises a load-bearing guide bar, a limiting guide bar, a wedge-shaped pressing block, a tensioning block, a tension bolt and nuts, wherein each load-bearing guide bar is fixed to the inner wall of the cutter box body, each limiting guide bar is fixed to the inner wall of the cutter box body and arranged in a mode that the limiting guide bar corresponds to the corresponding load-bearing guide bar and a certain included angel is formed between the limiting guide bar and the corresponding load-bearing guide bar, and each wedge-shaped pressing block, the corresponding tensioning block, the corresponding tension bolt and the corresponding nuts are arranged between the corresponding load-bearing guide bar and the corresponding limiting guide bar in a matched mode. By means of the round cutter box, the disc cutter can be replaced from either the back side or the front side of the cutter disc, the cutter is replaced from the back side in the construction process of a tunnel boring machine, the cutter is replaced from the front side in the production, assembling and debugging process of the tunnel boring machine, and the cutter box body of the round cutter box is of a round structure, so that the cutter box body on the cutter disc is made to be capable of saving the space and being subjected to even stress.

The invention relates to an adjustable base station antenna reflection frame comprising a hoop, a supporting pipe and two base station antenna reflection frame main bodies, wherein the supporting pipe comprises a reverse hoop, a transverse supporting rod and a longitudinal supporting rod; one end of the transverse supporting rod is fixedly connected with the longitudinal supporting rod, and the other end of the transverse supporting rod is fixedly provided with the reverse hoop; each base station antenna reflection frame main body comprises a metal frame and a metal mesh, each metal frame comprises a backward rectangular metal frame and a sidewise rectangular metal frame, each backward rectangular metal frame and each sidewise rectangular metal frame are inward and forms a bevel, a fixing seat is arranged at the edge of the horizontal plane of each backward rectangular metal frame and comprises a base and press plates, a slot body is formed in each base, and the press plates are arranged on the two sides of each slot body in an extending manner; the transverse supporting rod penetrates through the slot bodies of the fixing seats of the antenna reflection frame main bodies, and the presses plates fix the transverse supporting rod and connect the two base station antenna reflection frame main bodies in an opposite direction. The adjustable base station antenna reflection frame disclosed by the invention utilizes an adjustable installation manner and can comprehensively restrain interference signals, generating out of a radiation range, of side lobes and back lobes of the antennae.

The invention discloses a spraying-gun-installing-frame clothes wrapping roller in-out mechanism of a roller-replaceable clothes wrapping machine, and relates to spraying-gun-installing-frame clothes wrapping roller in-out mechanisms. The spraying-gun-installing-frame clothes wrapping roller in-out mechanism aims at solving the problems that a clothes-wrapping-machine spraying gun installing frame and the clothes wrapping roller in-out mode of a spraying gun arranged on the spraying gun installing frame in the prior art cannot be suitable for the roller-replaceable clothes wrapping machine. A front door (2) of the spraying-gun-installing-frame clothes wrapping roller in-out mechanism is arranged on a machine body (1), a feeding port (3) is formed in the front door (2), a front mouth ring (4) is in a cylinder shape, a first hinge base (5) is arranged on one side of the front wall of the machine body (1), a second hinge base (6) is arranged on the outer side wall of the front mouth ring (4), and the two ends of a first connecting rod (7) are hinged to the first hinge base (5) and the second hinge base (6) respectively, one end of a supporting rod (8) is installed on the inner side wall of the front mouth ring (4), and the other end of the supporting rod (8) is detachably connected with the spraying gun installing frame (9) in a matched mode. The spraying-gun-installing-frame clothes wrapping roller in-out mechanism can be used for the roller-replaceable clothes wrapping machine.

The invention discloses a novel oily flue gas adsorption treatment device and a use method and belongs to the technical field of waste gas treatment. The novel oily flue gas adsorption treatment device comprises a transfer spherical shell; the outer wall of the transfer spherical shell is communicated with two adsorption pipelines which are symmetrically arranged; the bottom end of the transfer spherical shell is communicated with a guide-out pipe; the outer wall of the guide-out pipe is in threaded connection with a pipe cover matched with the guide-out pipe; the inner wall of the pipe coveris rotationally connected with a pipe plug through a bearing, wherein the pipe plug is matched with the guide-out pipe; the top end of the pipe plug is fixedly connected with a hinge seat; and two inclined rods arranged in a crossed mode are hinged to the interior of the hinge seat. The device can be integrally in a V-shaped pipeline shape; the device is simple in structure, is convenient to operate, is convenient and fast to install, has a good adsorption effect; an adsorption ball mechanism is arranged in the device, and can fully adsorb and purify oily smoke; the adsorption ball mechanism is convenient to be replaced with new ones, and therefore, cleaning is facilitated, and treatment effect and efficiency are improved.

The invention discloses an anti-rotating hydraulic cylinder piston rod displacement sensor mounting structure, and belongs to the technical field of hydraulic cylinders. A guide blind hole is formed in the axis position of the back end of a piston rod; the end part of the guide blind hole of the piston rod is fixedly connected with a middle guide ring; a guide rod is fixedly mounted in a cylinder bottom mounting through hole; the guide rod is a hollow rod, and penetrates through a polygonal hole in the center of the middle guide ring in a matching mode; a solid section is arranged at the inner end of the guide rod; an inner guide ring is fixedly mounted on the peripheral surface of the solid section; a displacement sensor is fixed on the outer side of the cylinder bottom; and a detecting rod in the displacement sensor is positioned in the guide rod. The main body of the hydraulic cylinder is not influenced by maintenance and replacement of the displacement sensor, so that the subsequent maintenance convenience and speediness are guaranteed; and the middle guide ring and the inner guide ring are used for matching with the guide rod, so that the guide blind hole of the piston rod needs no special machining process, the machining steps are greatly simplified, and the machining cost is reduced.

The invention discloses a textile drying device capable of automatically replacing a winding roller. The textile drying device comprises a body, a storage roller, a motor, a first cavity and a secondcavity, a placement roller is mounted on the right side of the body, the second cavity is mounted on the left side in the body, and a guide roller is mounted below the first cavity and the second cavity; and a collector is mounted below the guide roller, a connecting block is mounted above a pressing block, an air cylinder is mounted in the middle of the rear portion of the storage roller, a mounting block is mounted on the outer side of a connector, a guide block is mounted on the inner side of the connector, connecting frames are mounted on the two sides of the motor, a telescopic rod is mounted in the middles of the connecting frames, and the telescopic rod is mounted behind the motor. The textile drying device capable of automatically replacing the winding roller is provided with a mounting groove and the mounting block, through arrangement of the mounting groove and the mounting block, connection between the storage roller and the connector can be more stable, the phenomenon thatthe storage roller suddenly falls off in the winding process is effectively prevented, and the stability of the device is improved.

The invention discloses an automatic flushing method and device for a fiber washing sieve. Cases of the washing sieve are connected in series with each other through bushings at middle parts; shaft sleeves are arranged in the bushings, plain shaft are arranged in the shaft sleeves, and chains are fixed on the plain shafts; chains and chain wheels on main shafts of motors form kinematic pairs; the motors drive the chain wheels to lead the chains to do axial reciprocating linear movement; each case of the washing sieve is also internally provided with a cambered spray pipe; the cambered spray pipes are located at the rear parts of washing sieve pieces and fixed on the plain shafts through fixing bolts; high pressure hoses are connected with the cambered spray pipes; a plurality of solid cone spray nozzles are uniformly mounted on the cambered spray pipes to form spray mechanisms; the spray mechanisms which are capable of axially moving are mounted at the rear part of the washing sieve; and high-pressure water columns sprayed by the nozzles flush materials in the seams of the fiber washing sieve out. The device provided by the invention is mounted in post-sieving washing sieve cases, repair operations, such as sieve piece replacement, are not influenced, flushing is carried out on the device after sieving, flushing effect is good, operation is simple, closed flushing ensures clean field environment, non-stop flushing is realized, and running hours of the washing sieve are increased.

The invention discloses an intelligent belt starter. The starter comprises a buckle, a male buckle and a female buckle of the buckle are respectively connected with two sides under an airbag in an intelligent belt, when the buckle is fastened, it is ensured that the airbag can always surround a human body after being deployed, the protection range of the airbag is improved, a chip groove is formedin the female buckle, a starting chip of a control power switch is installed in the chip groove, the end of the starting chip is provided with a start switch, a press rod for starting the start switch is arranged on the male buckle, one the one hand, the buckle is fastened to activate the power switch during wearing so as to prevent the case that when an intelligent belt is worn, an activating button is not pressed to cause that the intelligent belt does not achieve the protection effect, the use efficiency of the intelligent belt is improved, on the other hand, the buckle is connected to theairbag to allow a belt body to be replaced, the case that the switch is placed on the belt body so that only the belt body in complement with a product can be used is prevented, and the use needs ofdifferent users are met.

The invention relates to an automobile gearbox shifting fork structure and a floating replaceable shifting block thereof. An automobile gearbox shifting fork and the shifting block thereof are split-type arrangement; the head of the shifting block is an expansion structure; an axle journal part is installed in a circular slotted-hole support and can freely rotate, and the tail part thereof is provided with a fastener mechanism which is at least one of a dropping-proof baffle ring, a dropping-proof baffle plate, a clamping spring, a cotter pin and a round pin with a fastener. The floating replaceable shifting block of the automobile gearbox shifting fork has simple and compact structure, convenient installation and replacement and low manufacturing cost, and can lead the automobile gearboxshifting fork to have good service performance and replaceability. The automobile gearbox shifting fork structure and the floating replaceable shifting block thereof can be widely applied to gearboxes of various motor vehicles or other vehicles.

The invention provides a waste heat recycling system for semi coke production, and a use method thereof. The waste heat recycling system comprises: a combustion furnace; a connection mechanism; a steam through pipe; a fixing mechanism used for fixing a heat exchange column and connected to a connection shell; the heat exchange column; a heat insulating wall; a driving mechanism used for driving the sliding of the connection shell and connected between the connection shell and a fixed shell; a water inlet mechanism used for continuously feeding water into the heat exchange column so as to continuously generate water vapor, arranged in the fixed shell, and connected to the heat exchange column; an installing mechanism used for fixing the heat exchange column in the installation groove on thefixed shell and connected between the heat exchange column and the fixed shell; and a sealing mechanism. The waste heat recycling system of the present invention has characteristics of high waste heat utilization efficiency, good effect, and convenient maintenance and replacement of the heat exchange column.

The invention relates to the technical field of cold-rolled steel production, in particular to an efficient cold-rolled steel pickling device for shear blade production. The device comprises a box body, an acid liquor tank is formed in the box body, a liquor outlet is formed in the middle of the inner bottom wall of the acid liquor tank, a steel inlet is formed in the middle of the left side of the box body, a steel outlet is formed in the position, corresponding to the steel inlet, of the right side of the box body, an observation opening is formed in the middle of the upper end of the front face of the box body, a control box is fixed to the position, located below the observation opening, of the front face of the box body, a transmission assembly is arranged in the box body, the transmission assembly comprises a first transmission roller set, a second transmission roller set and a guide roller set, a cleaning assembly is arranged in the box body, and the cleaning assembly comprises two fixing blocks. By arranging a filter assembly, acid liquor can be filtered, the purity of the acid liquor can be improved, meanwhile, a filter plate can be replaced without affecting the pickling process, and the filter efficiency of the filter plate to the acid liquor can be improved.

The invention relates to a biological filter provided with a modular packing layer and a mounting method of the modular packing layer. The biological filter is sequentially provided with a water distribution region, a supporting layer, a filter material layer and a clear water region from bottom to top; the modular packing layer is also arranged in the biological filter, the modular packing layer is composed of multiple packing modules, each packing module comprises a square cage body and packing arranged in the square cage body; each square cage body is fixed in the biological filter by virtue of a support and can be separately disassembled; and the packing is biological contact oxidation packing or suspended packing. The biological filter provided by the invention has the advantages that the biological contact oxidation packing or suspended packing is additionally arranged above the filter material layer of the biological filter, so that the handing capability of the biological filter can be greatly improved; meanwhile, the modular packing layer is simple in structure and is easy to disassemble and replace.

The invention relates to the technical field of tunnel boring machine engineering machinery. A circular cutter box capable of bidirectionally replacing disc-shaped hobs, comprising a cylindrical ring-shaped cutter box body fixed on the cutter head and two centrally symmetrical hobs arranged inside the cutter box body Shaft fastening unit, the hob shaft fastening unit includes a load-bearing guide bar fixed on the inner wall of the knife box box, a limit position fixed on the inner wall of the knife box box and correspondingly set at a certain angle with the load-bearing guide bar Guide bars, and wedge-shaped compression blocks, tension blocks, tension bolts and nuts that are matched and arranged between the load guide bars and the limit guide bars. The circular cutter box of the present invention can respectively realize the replacement of the disc-shaped hob from the back of the cutter head and the front of the cutter head. For hob replacement during production, assembly and commissioning, the cutter box has a circular structure, which can save space and uniform force on the cutter head.

The invention discloses a central multi-drive transmission device of an elongated output shaft of a speed reducer. The central multi-drive transmission device of the elongated output shaft of the speed reducer resolves the problems that an existing device needs middle transition transmission, and is low in efficiency and high in cost, and is characterized in that a machine shell of the speed reducer is elongated, the elongated output shaft is arranged, a pinion is arranged at the shaft end of the elongated output shaft in a matched mode, the pinion is directly meshed with the a big gear, and the speed reducer is provided with an oil extraction pipeline and comprises a box inside oil extraction pipe, a combined hole cover, a plate-penetrating pipe connector, a box outside oil extraction pipe, a stop valve, an oil blockage, and the like. According to the central multi-drive transmission device of the elongated output shaft of the speed reducer, the pinion arranged at the shaft end of the elongated output shaft is utilized to directly transmit the big gear, and therefore the transmission efficiency is high; when the arranged oil extraction pipeline replaces oil, the detachment of the speed reducer is not needed, and the replacement is convenient; and the combined hole cover, the plate-penetrating pipe connector and the like are combined to form a detachable pipeline, so that the oil extraction pipeline does not affect the replacement of the speed reducer.

The invention discloses a supporting device for a torpedo type iron mixing car tank. The supporting device comprises a walking device, a tank supporting device I, a tank supporting device II and a tank device. The walking device is provided with a driving end bearing rack and a driven end bearing rack. The tank supporting device I comprises a driving end bearing seat, a driving end bearing cover and a semi-cylindrical sliding bearing. The tank supporting device II comprises a driven end bearing seat, a driven end bearing cover and a rolling bearing located in an installing hole defined by the driven end bearing seat and the driven end bearing cover. The tank is connected with the semi-cylindrical sliding bearing in a sliding mode through a driving end trunnion. The tank is connected with the rolling bearing in a rolling mode through a driven end trunnion. The driving end of the tank is supported by the semi-cylindrical sliding bearing, a large gear in a tilting device does not need to be detached in the installation and replacement processes, and installation and maintenance are convenient. The driven end of the tank is supported by the rolling bearing, the friction coefficient is small, and efficiency is high.

The invention discloses a water system which comprises a splicing water path and a filter element component, wherein the splicing water path comprises a first module, a second module, a third module and a fourth module; each module is provided with a water path pipeline; the filter element component comprises a front filter element, an RO (reverse osmosis) filter element and a rear filter element;the first module and the second module are fixedly connected and clamp and fix the front filter element in a communication manner; the second module and the third module are fixedly connected and clamp and fix the RO filter element in a communication manner; the third module and the fourth module are fixedly connected and clamp and fix the rear filter element in a communication manner; and waterflows in from the first module, flows through the front filter element, the second module, the RO filter element, the third module and the rear filter element and finally flows out from the fourth module. The water system consists of multiple modularized water path plates in a splicing manner, molds of different modules are simple to mold, low in cost and easy to maintain, the modules are simple in assembling process and easy to mount and dismount, the production efficiency can be effectively ensured, the manufacturing cost can be lowered, and in addition, maintenance and overhaul can be facilitated.

The invention discloses a connecting line mechanism of a centreless grinder, which is connected between a discharge port of a front centreless grinder and a feed inlet of a back centreless grinder. The connecting line mechanism comprises a guide rail unit, a belt unit used for conveying a workpiece, a motor and a transmission unit. The guide rail unit comprises a middle fixed part guide rail and two turnover part guide rails which can be respectively connected at both sides of the middle fixed part guide rail rotatablely. The two turnover part guide rails are respectively connected with the discharge port of the front centreless grinder and the feed inlet of the back centreless grinder. The belt unit is connected with the guide rail unit. The transmission unit is connected with the belt unit and the motor in a transmission way. Because a connecting line mechanism is arranged between the two centreless grinders, the workpiece after being processed at the front centreless grinder can bedirectly and automatically conveyed to the back centreless grinder for processing.

The invention provides a lower jaw mandible expansion device matched with lip bumpers. The device comprises a mandible expansion component and a lip bumper component, wherein the mandible expansion component comprises a hyoid arch, two first molar bands, two first fixing blocks which are respectively fixed on outer sides of the first molar bands, two second fixing blocks which are respectively fixed on tongue sides of the first molar bands, and a tongue expansion arch wire which is arranged on the inner side of a U-shaped area of the hyoid arch; the tail ends on both sides of the hyoid arch are detachably connected with the second fixing blocks; one end of the tongue expansion arch wire is fixedly connected with the hyoid arch; the tongue expansion arch wire has expansion force far away from the tongue side; the lip bumper component comprises a labial arch and two lip bumpers; the tail ends of both sides of the labial arch are detachably connected with the two first fixing blocks, andthe two lip bumpers are detachably arranged on sections corresponding to positions of vestibular grooves of an anterior tooth area on the hyoid arch. The invention provides the lower jaw mandible expansion device matched with the lip bumpers can be used at mixed dentition and permanent dentition, deciduous and permanent tooth replacement at the mixed dentition is not affected, and bad habits suchas lower lip biting and the like can be avoided.

The invention provides a hanging type soap economizer and belongs to the technical field of machinery. The hanging type soap economizer solves the problem of waste of soap when in use. The hanging type soap economizer comprises a mounting plate and a net bag for containing soap; one side of the mounting plate is fixedly provided with a positioning column, on which a mounting wheel axially limitedby the positioning column is mounted in a sleeve mode; the side part of the mounting wheel is wound with a pull rope, one end of the pull rope is connected with the mounting wheel, the net bag is connected with the other end of the pull rope, an elastic member is mounted between the mounting wheel and the positioning column, and under the action of elasticity of the elastic member, the mounting wheel can rotate in a direction in which the pull rope is wound onto the mounting wheel. The hanging type soap economizer has the advantages of being convenient to use, saving soap and the like.

The invention discloses a liquid supply system, in particular to a liquid supply system for anodized foil forming electrolyte, and belongs to the technical field of design and manufacture of accessories of formation production equipment. The liquid supply system for the anodized foil forming electrolyte can stably supply the electrolyte to an electrolytic tank. The liquid supply system comprises aliquid preparation tank, and further comprises a balance liquid supply assembly, the liquid input end of the balance liquid supply assembly communicates with the liquid preparation tank, and the liquid output end of the balance liquid supply assembly communicates with an external formation electrolytic tank.

The invention discloses a one-machine and multiple-head type dispersion machine. The one-machine and multiple-head type dispersion machine comprises a base, a supporting frame, a machine body, a motor and a container, wherein a rotating head is arranged on the machine body and driven by the motor to rotate at a high speed; the rotating head is of an external spline structure; a stirring head is arranged in the container and comprises a rod body, a stirring knife positioned below the rod body and a connecting sleeve positioned above the rod body; the connecting sleeve is fixed on the container by a bearing and bolts; an internal spline structure matched with the rotating head is arranged on the connecting sleeve. According to the one-machine and multiple-head type dispersion machine disclosed by the invention, the defects of the prior art are overcome; the stirring head is arranged on the container; when the dispersion machine passes through the splines, the rotating head drives the stirring head to rotate at the high speed; the dispersion machine and the stirring head are split, so the change of the stirring head is not affected when the dispersion machine works; a worker can mount a corresponding stirring head in the container according to the characteristics of material kinds; moreover, loading and unloading of the dispersion machine can be automatically finished by rotating a container placing platform; the one-machine and multiple-head type dispersion machine has the advantages of convenience, quickness, high working efficiency and wide application range.

The invention relates to a removable covering type invisible plane guide plate, an invisible orthodontic device and a manufacturing method of the invisible plane guide plate, the removable covering type invisible plane guide plate comprises a cavitation bubble type flat guide area and two-side retention areas, and the retention areas are used for wrapping and covering a conventional orthodontic appliance. The invisible orthodontic device comprises a transparent orthodontic appliance and a removable covering type invisible plane guide plate. The removable and wearable covering type invisible plane guide plate is compatible with an existing invisible correction system, can assist the existing invisible correction system to realize the correction purpose of occlusion opening, and does not influence the use of a conventional correction appliance; the cavitation bubble type flat guide area can provide a lower anterior tooth occlusion area with a large area, and for a deep occlusion patient, the back teeth can be effectively cushioned open, the occlusion contact force of the back teeth is eliminated, the back teeth are elongated, and the occlusion can be effectively opened; due to the design of the hollow three-dimensional parallel guide occlusal area, the hardness of the occlusal area is ensured, a certain elasticity and deformable range are provided, a patient can adapt to the occlusal area more easily, and the wearing feeling is more comfortable.

The invention relates to a medical wrist nursing fixing device used on wrist, belonging to medical tool technique. The invention comprises a cover layer, a connecting structure and a support structure, wherein the connecting structure is at two ends of the cover layer, to connect and recombine the cover layer into cylinder shape matched with the wrist, the support structure is vertically distributed around the cylinder. The invention has the support structure to correct the fixed body, and uses the whole cover layer to cover whole hand and wrist, to protect and fix the wrist joint and around part to avoid hurt again. And the invention extends a thumb protective plate to fix the thumb, pastes the fixing device on the wrist joint, and uses franella surface engaged with a self-adhesive clamper to adjust the adhesive position to obtain wide application and realize best fixing.

The invention relates to the technical field of ink jetting devices, in particular to a double-input high-speed ink jetting device. The double-input high-speed ink jetting device comprises a controller, a printing head, an ink collecting box with an ink collecting cavity and two ink storage boxes, the ink storage boxes communicate with the interior of the ink collecting cavity through ink outlet pipes, ink conveying channels are arranged in the ink outlet pipes, liquid level sensors are arranged in the ink storage boxes, an installation cover is arranged in the ink collecting cavity, and a driving motor is arranged in the installation cover; an output shaft of the driving motor penetrates through the installation cover, the end, entering the ink collecting cavity, of the output shaft of the driving motor is connected with an adjusting disc, the ends, away from the ink storage boxes, of the ink outlet pipes are connected with pressing rings, an ink sealing device used for sealing the ink conveying channels is arranged on the adjusting disc, and a transmission device used for starting the ink sealing device is arranged on the adjusting disc and corresponds to the pressing rings; and the ink collecting box is provided with an ink outlet hole, and the ink outlet hole is connected with the printing head through an ink adding pipe. The ink storage boxes can be replaced under the condition that the working efficiency of the ink jetting device is not affected.

The invention belongs to the technical field of optical fiber preparation, and particularly relates to a preparation device and method of crystal optical fibers. The preparation device of the crystaloptical fibers is characterized by comprising a heat-preservation furnace, a heating light source assembly, a rod feeding device and a lifting device, wherein a graphite piece is arranged in a furnacebody, the heating light source assembly comprises a CO2 laser device and a parabolic mirror, the rod feeding device is used for fixing crystal prefabricated rods and feeding rod bodies into the furnace, the lifting device is used for lifting and pulling crystals, a support is arranged in the heat-preservation furnace, the parabolic mirror is mounted at the top of the support, and light beams of the CO2 laser device form a heating source in an internal thermal field of the graphite piece through convergence of the parabolic mirror. According to the preparation device and method of the crystaloptical fibers, the heat-preservation furnace is combined with an LHPG technology, the LHPG technology provides the heating source, the heat-preservation furnace provides the reasonable thermal fieldto accurately control the temperature of the preparation environment of the crystal optical fibers, the advantages of the heat-preservation furnace and the LHPG technology are exerted, thus the crystal optical fibers can be crystallized better and release stress step by step in the preparation process, and the purpose of preparing the high-quality crystal optical fibers is achieved.

The invention discloses a robot control system and method based on a principal and subordinate teleoperation mechanical arm. The robot control system comprises a principal mechanical arm and information collection plate, a monitoring center PC, a robot principal control panel, a subordinate mechanical arm and FPGA movement control panel and a site environmental information collection plate. The robot control method includes the steps of principal mechanical arm manufacturing and data collection, the control of a subordinate mechanical arm, a trolley and a cradle head, video collection and communication of the robot principal control panel, data collection and communication of the site environmental information collection plate and data display and communication of the monitoring center PC. Under the condition that the complexity of a system is not added, the mechanical arm can be controlled to achieve relatively complex movement. A modularized mode is designed to be used, and modules are in communication through CAN buses. An FPGA is used as a movement control panel, establishing and updating of the system are convenient, and the stability of the system is improved. A robot transmits the video information of a working site and the environmental information of the working site to a monitoring center so that the robot can be controlled to complete more complex operations.

The invention discloses an agricultural machinery pulley soil removal device for farmland, and relates to the technical field of pulleys. It includes a pulley assembly, a fixing mechanism and a soil removal mechanism. The surface of the pulley assembly is movable and provided with a fixing mechanism for supporting the soil removal mechanism and scraping the soil. Both sides of the fixing mechanism are fixedly arranged to assist in scraping the soil. As for the soil removal mechanism, the pulley assembly includes a transmission shaft. By setting the pulley assembly, the fixing mechanism and the soil removal mechanism, the positioning plate is pulled up to drive the insertion rod to disengage from the inside of the movable chamber and the positioning hole, and the protective cover can be removed. Use a screwdriver to disassemble the fixing rod to replace the scraper body and When replacing the belt body and the belt body alone, you only need to pull the scraper body to the right and replace it through the front gap of the fixing frame, which further ensures the replacement efficiency. The structure of the device is simple and easy to operate, which is convenient for users.

The invention discloses a lock shield for an antiradiation door. The lock shield comprises a shield body, wherein a front side plate, a left side plate, a right side plate, an upper plate and a lower plate of the shield body are fixedly connected into a cuboid structure, the rear side of the upper plate of the shield body is movably connected to a hinge, the left side plate or right side plate of the shield body is provided with an L-shaped notch, one part of the L-shaped notch extends to the back side of the shield body and is provided with an open end, and the other part of the L-shaped notch is provided with a sealing end; and an antiradiation lead plate is arranged in the shield body. The lock shield is mounted on a door lock of the antiradiation door by the hinge, the shield body covers the door lock, since rays are transmitted along a straight line, the shield body can shield the rays penetrating through a fixing hole of the door lock, a door lock handle can realize door opening and closing operations by rotating and shaking the L-shaped notch, the shield body is rotated and turned over upwards by the hinge to expose a lock cylinder hole, thereby realizing unlocking and locking of the door lock; and replacement is not affected when the door lock is damaged, and the door opening and closing under a closing state can be realized.