139results about How to "Affect mobile" patented technology

The invention provides a control method for a motor driving a shield door and provided with a position sensor. The control method comprises the steps that a, when the motor drives the shield door, a digital signal processor carries out speed closed-loop PID control over the motor; b, if the digital processor can not obtain a position change signal detected by the position sensor, the digital signal processor compares currents of the motor with a preset threshold value, and when the currents are larger than the set threshold value, the motor is controlled to stop rotating or reversely rotate to an initial state; when the currents are not larger than the set threshold value, then whether the digital signal processor has already recorded a time and duty ratio curve of the whole door opening and closing process is judged, if no, the motor is controlled to rotate at a constant speed, and if yes, according to the recorded time and duty ratio curve, the motor is controlled according to a door opening and closing speed curve. According to the control method, when the position sensor in the motor fails, the motor can still be controlled safely to drive the shield door to be opened or closed normally.

The invention provides a device for controlling interaction of various cells as well as a manufacturing method and application of the device. The device provided in the invention comprises a glass substrate (1) and a polydimethylsiloxane seal (2) with a plurality of grooves, wherein the polydimethylsiloxane seal is attached to the surface of the glass substrate to respectively form a plurality of micro-channels, the glass substrate in each micro-channel can be selectively modified to be a substrate for promoting cell adhesion by incubating extracellular matrix proteins or can be modified to be a cell adhesion-resistant substrate by assembling polyethylene glycol solution or is not modified. The device is simple and easy to operate, can control fixation, all movement and partial movement of various cells to achieve the purpose of arbitrarily controlling various cells, can be used for researching the interaction among various cells, the pathology or the cell biological development and can also be used for screening medicines.

The invention relates to the technical field of intelligent cooking and discloses a seasoning putting method, a proportioning machine and a storage medium for increasing the proportioning precision and the proportioning efficiency of the proportioning machine as well as the executing effect of a cooking task. The method comprises the following steps: receiving a seasoning inputting command which carries an identifier of a target seasoning needed to be input and the weight of the target seasoning needed to be input; determining a target seasoning box for holding the target seasoning according to the identifier of the target seasoning and a target discharging assembly corresponding to the target seasoning box; determining whether a seasoning receiving cup for holding the target seasoning isin a seasoning receiving position or not; and if so, controlling the target discharging assembly to drive the target seasoning box to input the target seasoning to the seasoning receiving cup throughthe discharge port of the target discharging assembly according to the weight of the target seasoning needed to be input.

The invention provides movable equipment for soil improvement. The equipment comprises a transverse frame, a stirring mixing box, a stirring motor, a rotating sleeve, spiral stirring blades, a ball bearing, a discharge buffering scraper structure, a soil crushing frame structure, a soil conveying frame structure, a movable bottom frame structure, a bottom shaft frame, a retractable air cylinder, an upper side shaft frame, a control box, a touch screen, a controller and a feeding box structure, wherein the stirring mixing box is mounted on the left side of the upper portion of the transverse frame through bolts. Through arrangement of soil overturning teeth, improvement of the crushing effect on soil blocks in soil is facilitated; through arrangement of the upper side shaft frame, a material conveying frame, the stirring mixing box, the retractable air cylinder and a lower side shaft frame, convenience is provided for opening the retractable air cylinder to make the retractable air cylinder move upward to reach the height of the right side of the material conveying frame during use, and at the same time, the height of the entire soil crushing frame structure is increased so that thesituation can be avoided that the soil overturning teeth are in contact with a road surface and thus movement is affected during use of the equipment on the normal road surface.

The invention provides an ice expansion resistant device for a water conservancy project. The ice expansion resistant device for the water conservancy project comprises a fixed frame, a movable hot plate and a balance weight arranged at the bottom of the fixed frame, wherein the movable hot plate is connected with the fixed frame through a damper, a sealed pressure reducing cavity is formed between the movable hot plate and the fixed frame, the movable hot plate is pushed by external ice expansion pressure to move in the fixed frame along the damper so that the size of the pressure reducing cavity can be changed, heating wires are evenly distributed in side face plates of the fixed frame, and heating wires are evenly distributed in the movable hot plate. The ice expansion resistant device for the water conservancy project further comprises a temperature controller, a displacement sensor arranged on the movable hot plate, and side plate temperature sensors arranged on the side face plates of the fixed frame respectively. The ice expansion resistant device for the water conservancy project is novel in structure, various freezing resistant measures are combined, therefore, no heat losses exist, the energy consumption is extremely low, the environment-friendliness performance is good, maintenance is convenient to conduct, and ice expansion damage can be guaranteed not to occur to water retaining structures in the water conservancy project in the ice period in winter.

The invention discloses a clamping tool for machining a motor cause, and the clamping tool carries out the end face clamping of a motor rotor in the motor case, so as to fix a motor and machining the end face of the motor case. The clamping tool can prevent the motor stator from being expanded, and prevents the motor case from deforming.

A low loss transmission system which utilizes a single uninsulated central conducting line segment without any special surface treatment or special enclosing dielectric and having launch devices mounted at each end. The invention provides the use of conductors with circumference approaching and exceeding one wavelength at the propagating frequency. In combination, this invention enables the use of unconditioned and uninsulated conductors and in particular, existing overhead electric power lines which are available worldwide, for the economic and efficient transport of information.

The invention relates to a safe type patrol security and protection robot having the sweeping function. The safe type patrol security and protection robot comprises a protection shell, a main body, abase and four moving wheels and further comprises a lifting mechanism and a sweeping mechanism. The lifting mechanism comprises a first motor, a driving gear, a lifting plate, an ash removal assemblyand two lifting assemblies. Each lifting assembly comprises a driven gear, a transmission shaft, a lead screw and a sliding block. The sweeping mechanism comprises a waste material box, a material drawing assembly and a swing box. The swing box is internally provided with a swing assembly. The swing assembly comprises a power unit and a swing unit. The swing unit comprises a rotating rod, a connecting rod, a swing rod and a suction nozzle. According to the safe type patrol security and protection robot having the sweeping function, by means of the lifting mechanism, a main body can be retracted into the protection shell, and the probability that the main body is damaged is lowered; and by means of the sweeping mechanism, the ground sweeping work can be conducted, and the problem that impurities on the ground affect movement of the patrol security and protection robot is avoided.

The invention discloses a clamping tool for machining a motor case, and the tool clamps an end face of a motor stator in the motor case, so as to fix a motor and to machine the end face of the motor case. The tool can prevent the motor state from being expanded by supporting, and prevents the motor case from deforming.

The invention provides a copper binding wire tension tester with the good fixing effect. The tester comprises a longitudinal installation frame, a Velcro buckle, an adjustable movable fixing frame structure, a copper binding wire clamping fastening seat structure, a lead screw, a longitudinal U-shaped sliding groove, a sliding block, a connection frame with an internal thread, a tension sensor, atransverse fixing plate, a longitudinal positioning pipe, a manual rotary frame structure, a ball bearing, a displaying screen and a miniature PLC, wherein the Velcro buckle is transversely adhered tothe outer sides of the lower parts of the longitudinal installation frame and the transverse fixing plate. Arrangement of a reinforcing limiting block and a jacking spacer block is beneficial for utilizing a jacking bolt to jack a copper binding wire between the jacking spacer block and the reinforcing limiting block, and accordingly the clamping and fixing degree of the copper binding wire can be improved; and arrangement of the transverse connection rod, the transverse positioning pipe and a rocking handle is beneficial for adjusting the length of the left end or the right end of the transverse connection rod conveniently, and accordingly the labor intensity of rotating the rocking handle can be saved when the length of the left side is increased.

The invention relates to a personalized self-ligating bracket appliance with lingual straight-wire arches. The personalized self-ligating bracket appliance comprises a plurality of self-ligating brackets formed by threading and connecting the lingual straight-wire arches, wherein lingual surface tubes are threaded and connected to the both ends of each straight-wire arch respectively; each self-ligating bracket comprises a bracket body and a bracket bottom plate which are mutually fixed through a connection body; the connection body and the bracket bottom plate are integrally moulded; the connection body and the bracket body are welded and fixed; each of the bracket body and the connection body is provided with a first contact surface and a second contact surface, and the first contact surface and the second contact surface are mutually vertical; a limit cavity cap is formed between the connection body and the bracket body; a bracket groove for each straight-wire arch to penetrate through is further formed in the middle part of the bracket body, and an anti-ligating groove is formed in one sidewall of the bracket groove; and a self-ligating elastic sheet further covers the bracket groove, one end of the self-ligating elastic sheet is limited in the limit cavity cap, and the other end of the self-ligating elastic sheet is capable of being clamped in the anti-ligating groove. The personalized self-ligating bracket appliance disclosed by the invention ensures accurate welding location between the bracket body and the bracket bottom plate, and improves the treatment effect.

The invention relates to a puncher, and particularly relates to a dustproof puncher for a chemical anchor bolt. The technical problem to be solved is how to provide a chemical anchor bolt dustproof puncher which is capable of automatically punching, automatically cleaning the interior of a hole and playing an effect of dust prevention. The dustproof puncher for the chemical anchor bolt comprises ahandle, a mounting plate and the like, wherein the mounting plate is arranged at top end of the handle. According to the invention, the dustproof puncher can achieve the purposes of automatic punching and hole interior cleaning through the cooperation of a punching mechanism and a hole cleaning mechanism, and can play the effect of dust prevention through a dustproof mechanism, chippings and dustgenerated during punching can be prevented from entering a protective pipe to affect movement of a drill bit through a sponge ring and a dustproof pad, and the moving position of a protective cover can be adjusted by rotating an adjusting screw clockwise and anticlockwise by a worker.

The invention discloses a rapid automatic truck loading system. The rapid automatic truck loading system comprises a truck loading device and a material fetching component located at one end of the truck loading device, wherein the truck loading device comprises a stretching and contracting component, a supporting component and a material feeding forklift, the stretching and contracting componentcomprises a plurality of sliding rails performing stretching-contracting moving among the sliding rails, the adjacent sliding rails are stacked inside and outside and are driven by a first stretchingand contracting rod, the sliding rail on the outermost side is installed on supporting racks, and the lower portions of the sides, close to a truck-loading vehicle, of the other inner-side sliding rails are all provided with a plurality of different supporting idler wheels, the different supporting idler wheels can be in supporting contact with a carriage, the stretching and contracting componentcan perform stretching and contracting into the carriage in the length direction of the carriage, the material feeding forklift performs linear movement through one sliding rail with a guiding position-limiting strip and performs truck loading on cargoes, and the material fetching component is located at the tail portion of the truck-loading vehicle and can perform material fetching on the conveyed cargoes. By means of the rapid automatic loading system, the cargoes is fed into the carriage, manual carrying is saved, furthermore, rapid truck loading is realized through the linear movement of the material feeding forklift, the rapid automatic loading system is more efficient and rapid, and the truck loading is conveniently performed.

The invention relates to a wig drying device which comprises a box. Supporting legs are fixedly connected to the lower end of the box, belt type conveying mechanisms are arranged in the box, the discharging end of each belt type conveying mechanism is located over the feeding end of the adjacent lower-layer belt type conveying mechanism, each belt type conveying mechanism comprises a driving roller and a driven roller, the driving rollers and the driven rollers are in transmission connection through annular high-temperature-resistance meshed belts, electric heating pipes are arranged between the high-temperature-resistance meshed belts, LED heating lamps are arranged in the box, a support is arranged on the left side of the box, and an infrared heater is connected into the support. A temperature sensor and a humidity sensor are arranged in the box, a heat preservation layer is arranged on the inner wall of the box, humid discharging holes are formed in the top and the bottom of the box, a PLC is arranged on the outer wall of the box, and the temperature sensor, the humidity sensor, the LED heating lamps, the infrared heater and the PLC are all electrically connected. The wig dryingdevice has the advantages of being simple in structure, convenient to operate, complete in function, low in cost, high in practicability and high in efficiency.

The invention belongs to the technical field of drilling machines, and particularly relates to a cross drilling type drilling machine which comprises a supporting base, supporting frame columns are evenly arranged on the upper surface of the supporting base, a clamping plate is fixedly connected to the top ends of the supporting frame columns, and a control device is arranged at the axis of the lower surface of the clamping plate. And drilling devices are symmetrically arranged on the two sides of the upper surface of the clamping plate, the clamping plate comprises a modified square plate, and sliding grooves are symmetrically formed in the lower surface of the modified square plate. When the drilling device carries out drilling operation, the control device adjusts the drilling depth of the drilling device, and the plug pushing pieces on the two sides are subjected to the same stress, so that the moving distances of the plug pushing pieces on the two sides each time are certainly the same, the depths of orifices drilled by threaded drill bits on the two sides are certainly the same, and operation errors caused by manual drilling, for example, force application is not uniform, are prevented. The drilling depths of the drilling devices on the two sides are different due to the conditions of wrong reading observation and the like, and poor machining of the steel plate is caused.

The invention provides an afterheat boiler which comprises a boiler body, a stream drum, a circulating pump and a filter device. The boiler body is provided with a heat exchanger; the stream drum comprises an outer shell which is respectively connected with a water supply pipe, a drainage pipe, a return pipe and a steam outlet pipe, wherein the drainage pipe and the return pipe are respectively connected with the heat exchanger; the circulating pump is arranged on the drainage pipe; the filter device is arranged on the drainage pipe and arranged between the circulating pump and the stream drum; the filter device comprises a filter body, a bracket and a supporting frame; the filter body is provided with an inlet, an outlet and a filter core arranged therein; and the bracket is mounted on the filter body and can be movably supported on the supporting frame along the longitudinal direction. The filter device of the afterheat boiler is rapid to dismount, replace and mount the filter core to improve the operation efficiency.

The invention discloses a grinding apparatus convenient to clear up waste residues. The grinding apparatus comprises a box body, wherein the front side of a connecting plate is connected with a first toothed rail; the bottom part of the connecting plate is connected with a mounting plate; the back side of the bottom part of the mounting plate is connected with an electric motor through a connecting base; the bottom of a cleaning plate is connected with brush hairs; the bottom part of a first connecting rod is connected with a first adjusting plate; the bottom part of a second connecting rod is connected with a second adjusting plate through a support rod; the bottom part of the first adjusting plate and the top part of the second adjusting plate are both connected with second toothed rails; a second gear is meshed between the two second toothed rails. According to the grinding apparatus disclosed by the invention, through collaborative use of the first adjusting plate, the second adjusting plate, the second toothed rails, the second gear, the cleaning plate and the brush hairs, when the second gear rotates, the two second toothed rails can drive the first adjusting plate and the second adjusting plate to move, so that the brush hairs can brush fragments and the waste residues in the box body, so that the waste residues can be cleared up more conveniently.

The invention relates to a clamp used for flange gear shaping. The clamp comprises a rack; a positioning disc is arranged on the rack, a positioning groove is formed in the positioning disc, and the positioning disc is provided with two pressing devices; each pressing device comprises a pressing rod, the pressing rods are slidably connected to the positioning disc, cold air supplying boxes are fixed to the positioning disc, cold air channels are formed in the positioning disc, and the cold air supplying boxes communicate with the cold air channels; pressing plates are fixedly connected to thepressing rods, water bags are fixed to the positioning disc, first buttons are mounted on the wall of the positioning disc, water spraying holes are formed in the pressing rods, and hoses communicatewith the positions between the water bags and the water spraying holes; water storage tanks are formed in the positioning disc, and heating devices are arranged on the outer walls of the water storagetanks and the outer walls of the cold air channels correspondingly; first pistons are slidably connected to the interiors of the water storage tanks, and springs are connected to the positions between the first pistons and the walls of the water storage tanks; and second buttons are mounted on the walls of the water storage tanks. Compared with the prior art, according to the scheme, the functionof multimode fixing of a flange plate through the clamp is achieved by arranging the pressing devices, and fixing of the flange plate is stable.

The invention discloses a flatness detection device for high-efficiency engineering survey, and belongs to the technical field of flatness detection. The flatness detection device comprises a mounting frame, and rolling wheels are arranged at four corners of the bottom of the mounting frame; before detection, the horizontal block is limited firstly, so that the detection rods are all in a horizontal state during detection, and the situation that the detection rods are inclined due to inclination of the mounting frame and detected data are deviated, so that the detected data are large in deviation, and judgment of detection personnel on the ground flatness is affected is avoided; a plurality of points of the construction ground can be detected through a plurality of detection rods, the flatness condition of the construction ground can be obtained by counting and comparing the difference values of a plurality of read data, the flatness condition of the ground before construction can be quickly obtained, the detection positions of the detection rods only need to be cleaned, and the detection efficiency is greatly improved. The cleaning time is shortened, and rapid detection can be carried out.

The invention belongs to the field of tunnel excavation equipment, and particularly relates to a tunneling machine slag removal device and a tunneling machine. The tunneling machine comprises a cutter head, a main beam connected to the cutter head, an equipment bridge located on the rear side of the main beam and a slag conveyor, and further comprises a slag removal device with a slag removal mechanical arm and a slag removal hopper; the slag removal mechanical arm comprises a connecting base connected with the main beam and / or the equipment bridge and a movable arm hinged to the connecting base, the movable arm comprises at least two arm sections, driving devices for driving the corresponding arm sections to be unfolded and folded are arranged between the arm sections and the connecting base and between the arm sections, and the slag removal hopper is connected to the last-stage arm section. The active slag removal hopper can be driven by a slag removal mechanical arm to actively take slag, the slag removal hopper is provided with a slag discharging position for feeding the taken slag into a slag conveyor on a main beam of the heading machine, and the slag removal hopper is provided with a discharging door and a discharging driving device. Or a material pouring driving device for driving the slag removal hopper to pour out the slag is arranged between the slag removal hopper and the slag removal mechanical arm, so that automatic slag removal is realized.

The invention discloses a building construction hydraulic climbing scaffold. The scaffold comprises a base, wherein four concave plates are fixedly connected to the lower end of the base, a supportingmechanism enabling the base to be more stable is arranged around the four concave plates in a matched mode, a lifting plate is arranged above the base, two first square blocks are fixedly connected to the lower end of the lifting plate, the two first square blocks are provided with a lifting mechanism in a matched mode, the lifting mechanism enables the lifting plate to move up and down, a supporting plate is fixedly connected to the side wall of the base, first telescopic rods are fixedly connected to the two sides of the upper end of the supporting plate, a second telescopic rod fixedly connected with the upper end of the supporting plate is arranged between the two first telescopic rods, the two first telescopic rods are sleeved with sleeves correspondingly, the two first telescopic rods and the two sleeves are provided with conveying mechanisms in a matched mode, and the conveying mechanisms enable objects to ascend and descend. The scaffold is reasonable in structure, workers canascend and descend through the scaffold, meanwhile, materials can be conveyed to a high position, and construction of the workers is avoided.

The invention discloses an anti-falling mine car track. The anti-falling mine car track comprises a track body, and a mine car slides on the track body; a mounting plate is fixed to the end of the track, a winch is fixed to the upper side wall of the mounting plate, and a steel wire rope is fixedly connected between the driving end of the winch and the mine car; a supporting rod is fixed to the upper side wall of one end, close to the track body, of the mounting plate, a first wire guide wheel is mounted at the upper end of the supporting rod, a lifting plate is inserted in the mounting plate,a second wire guide wheel is mounted at the upper end of the lifting plate, and the steel wire rope is wound around the first wire guide wheel and the second wire guide wheel; and the lifting plate is in an L shape, a vertical plate is fixed to the end of the lifting plate, and a compression spring is fixed between the end of the lifting plate and the lower side wall of the mounting plate. According to the anti-falling mine car track, when the steel wire rope breaks, by utilizing the disengagement of clamping columns from the positions between rotating plates and the track body in rotation ofa disc, the rotating plates rotate to the upper side of the track body and prevent the mine car from continuing to move, and thus the safety of the mine car in the use process is guaranteed.

The invention discloses a preparation method of a light-emitting diode epitaxial wafer with a p-type composite layer, and belongs to the field of light-emitting diode manufacturing. The p-type composite layer is grown on a multi-quantum well layer, the p-type composite layer comprises a p-type InGaN layer and a p-type GaN layer, the In element has the effect of reducing the activation energy of Mg, and the activation rate of Mg in the p-type InGaN layer and the p-type GaN layer can be improved so as to improve the number of holes. The p-type InGaN layer is inserted in the p-type GaN layer, and the p-type InGaN layer can be used as a low-barrier region, stores part of holes and expands the holes, so that the holes can enter the multi-quantum well layer more uniformly, and the light emitting uniformity of the light emitting diode is improved. The light-emitting efficiency and the light-emitting uniformity of the light-emitting diode can be improved.

The invention discloses a feeding and discharging device for a forestry seedling bed, and relates to the technical field of feeding and discharging devices for seedling beds. The feeding and discharging device comprises four mounting seats, and further comprises a body, a placing mechanism, a cleaning mechanism, a driving mechanism, a conveying mechanism and a pushing mechanism, the body is arranged above the mounting seats, the conveying mechanism is arranged in the body, the placing mechanism is arranged above the conveying mechanism, the cleaning mechanism is arranged at one end of the body, the conveying mechanism is arranged at the other end of the body, and the conveying mechanism is connected with the body through a driving mechanism. According to the feeding and discharging device for the forestry seedling bed, feeding and discharging are more convenient in the using process, meanwhile, soil falling in the feeding and discharging process can be cleaned, the conveying mechanism in the device can move in the using process, and therefore one conveying mechanism can be used in cooperation with a plurality of bodies.

The invention relates to the technical field of mechanical processing, and discloses a hardware fitting polishing device. The hardware fitting polishing device comprises polishing equipment, wherein asupporting plate is fixedly arranged on the top of the polishing equipment; a servo motor is fixedly arranged on the top of the supporting plate; a lead screw is fixedly arranged on an output shaft of the servo motor; one end of the lead screw is movably connected to a supporting block; and the bottom of the supporting block is fixedly connected to the top of the supporting plate. The hardware fitting polishing device has the beneficial effects that the hardware fitting polishing device enables a hardware fitting to be directly polished on the ground and is applied to different fields; the supporting plate is used for preventing the servo motor from dropping in a using process, and meanwhile, preventing the position of the servo motor from changing due to the per se vibration in a using process to affect the use of the servo motor; and a sliding block can drive a polishing piece to move to different positions under the action of the lead screw, so that the different parts of the hardware fitting are polished, and therefore, the problem that a traditional polishing piece can only polish one part of the hardware fitting is avoided.

The invention relates to the technical field of operation tables of machine tools, in particular to an operation table of a machine tool. The operation table comprises a placing mechanism, mounting mechanisms, driving mechanisms, pushing mechanisms and cleaning mechanisms. The side walls of the placing mechanism are slidably connected with the mounting mechanisms, the tops of the mounting mechanisms are equidistantly and slidably connected with the driving mechanisms, and after the mounting mechanisms are moved to the ends of the placing mechanism, the driving mechanisms are pushed, so that the cleaning mechanisms at the bottoms of the driving mechanisms clean up debris left during machining inside the placing mechanism, operation is convenient, and re-placement of a fixture is facilitated; the multiple driving mechanisms are connected through the pushing mechanisms, the pushing mechanisms are pulled away from one end of the mounting mechanisms while the debris inside the placing mechanism is cleaned up, the multiple cleaning mechanisms move simultaneously, and thus the debris inside the placing mechanism is cleaned up more quickly; and the mounting mechanisms located on the side walls of the placing mechanism can realizing limiting, so that moving of a machining mechanism is prevented from being affected during part machining.

The invention relates to the technical field of petroleum drilling and production equipment, in particular to an automatic clearance adjusting oil cylinder and a hydraulic disc brake, which comprise a cylinder body, one end of the cylinder body is closed, the other end of the cylinder body is open, a main piston and a compensation piston are arranged in the cylinder body, and a compensation oil cavity is arranged between the compensation piston and the inner wall of the closed end. A brake oil cavity is formed between the main piston and the compensation piston, and a one-way valve is arranged on the compensation piston. A containing groove is formed in the middle of the end, facing the inner wall of the closed end, of the compensation piston, the peripheral wall of the T-shaped end of the pull rod is in sealed sliding connection with the inner wall of the containing groove, the other end of the pull rod is fixedly connected with the main piston, and a brake gap is formed between the T-shaped end of the pull rod and the groove bottom of the containing groove. The automatic clearance adjusting oil cylinder has the following advantages: the brake response time is ensured; the automatic control is realized; the automatic clearance adjusting oil cylinder is compact in structure, economical, practical and stable in brake clearance control, the stability of equipment during operation is guaranteed, and production requirements and quality requirements are finally met.

The invention discloses a municipal pipeline dredging device suitable for different pipeline models. The municipal pipeline dredging device comprises a machine shell, manual telescopic rods and a municipal pipeline, wherein lead balancing weights used for maintaining balance are fixedly connected to the left end and the right end of the lower surface of the machine shell, the manual telescopic rods are arranged on the lower surface, the front side face and the rear side face of the machine shell, second rectangular blocks are fixed to the output ends, on the front side face and the rear side face of the machine shell, of the manual telescopic rods, a corrosion-resistant rotating rod is fixed to the output end of a driving motor, plastic needle heads are fixed to the outer end of a desilting plate at equal intervals, the municipal pipeline is located on the outer side of the machine shell, positioning plates are welded to the upper surface and the lower surface of the machine shell correspondingly, and supporting mechanisms are arranged on the inner sides of the positioning plates. According to the municipal pipeline dredging device suitable for the different pipeline models, it is avoided that sludge affects movement of a driving wheel and a driven wheel, the municipal pipeline dredging device is suitable for municipal pipelines of different diameter sizes while the dredging efficiency is improved, and the position of a dredging structure can be conveniently adjusted in the pipeline.

The invention discloses a ceramic plate extruding die adjustable in extruding port and relates to the technical field of ceramic plate production. The ceramic plate extruding die adjustable in extruding port comprises a die body which is provided with a cavity; twenty core bodies are arranged in the cavity; two L-shaped plates are fixed to one surface of the die body, and form a rectangular slidegroove; a material blocking plate is arranged in the rectangular slide groove in a sliding fit manner; the top face of each L-shaped plate is provided with fifteen grooves side by side; a sliding rodis fixed to one surface of the material blocking plate, and is sleeved with a resetting plate; a cover plate is fixed to one end of the sliding rod; and a spring is fixed between the cover plate and the resetting plate. According to the ceramic plate extruding die adjusting in extruding port, due to the cooperative use of the sliding rod, the resetting plate, the cover plate, the spring, protrusions and the grooves, the problem that the size of an extruding port of an existing ceramic plate extruding die is not convenient to adjust is solved; and by arranging a sealing piece, the problem thatthe sealing effect is bad after the extruding port of the existing ceramic plate extruding die is adjusted is solved.