40 results about "Upper tooth" patented technology

The present invention relates to the technical field of tire assembly installation, and discloses an auxiliary device for tire assembly installation that is convenient to use, including a chassis. A fixing plate is fixedly installed on the top of the chassis. A sliding opening is formed in the fixing plate. A lifting mechanism is arranged in the sliding opening. The lifting mechanism includes a lifting plate and a driving mechanism. A notch is formed in the lifting plate. Two first rollers and an adjusting mechanism are arranged in the notch. The driving mechanism can drive the two first rollers to support the tire assembly and move along the sliding opening. By starting the driving motor, when the two first rollers support the tire assembly, the lower tooth plate and the upper tooth plate move towards each other to drive the two first rollers and the second rollers to approach each other to support and fix the tire assembly, thereby avoiding the tire from falling during transportation and improving safety.

The utility model relates to the technical field of hydraulic engineering, in particular to an anti-seepage hydraulic engineering dam which comprises a concrete top plate and a concrete bottom plate, an upper tooth wall is fixedly connected to the upper end of the concrete top plate, and a plurality of upper tooth grooves are formed in the upper end of the upper tooth wall. A filtering assembly is fixedly connected between the concrete top plate and the concrete bottom plate, and the rear end of the filtering assembly is fixedly connected with a protection assembly. According to the anti-seepage water conservancy project dam, double anti-seepage barriers are formed through the composite structure of the inclined anti-seepage wall and the two-cloth-one-membrane anti-seepage geomembrane, the inclined anti-seepage wall can guide water flow to be dispersed along the slope surface, seepage pressure is reduced, and the two-cloth-one-membrane anti-seepage geomembrane can be used for preventing the water flow from entering the water conservancy project dam through the isolation and drainage performance of fabric and the low permeability of membrane materials. A water seepage path is effectively blocked, a fixing frame and a separation net are matched, the geomembrane is protected against damage, impurities can be intercepted, and the dam anti-seepage efficiency is greatly improved.

The utility model discloses a network cable with a structure for preventing a cable body from being wound and knotted, and relates to the technical field of network cables. The network cable has an anti-winding structure and comprises a connecting line main body, a connecting end I, a connecting end II and a protection box, a rotating piece is arranged on the protection box, the rotating piece is provided with an S-shaped groove, the connecting line main body can be nested and rotated, a guide sliding column I and a guide sliding column II are arranged in the protection box and assist the connecting line main body to pass through, and a driving mechanism is arranged on the side of the protection box. The rotating part can be driven to rotate to wind the connecting wire main body, the rotation of the rotating part is limited through clamping of an upper tooth limiting column and a lower tooth limiting column, a springback assembly is arranged between the moving part and the rotating part, a spring is arranged, the rotating handle and the whole resetting of the rotating handle are realized, a protective cover plate is arranged on a protective box to seal a space, and the protective box can be detached for maintenance; according to the device, the connecting line main body is prevented from being wound and knotted through the overall structure, and the device is convenient to install and maintain.

The utility model discloses a machining die and machining equipment applied to a transmission shaft, which comprises an upper tooth die and a lower tooth die, the first cushion block is fixedly arranged above the upper tooth die; the push pipe is arranged in the first through hole in a sliding manner; the second cushion block is fixedly arranged above the first cushion block; the third cushion block is slidably arranged in the second through hole, the lower portion of the third cushion block abuts against the upper end of the push pipe, and a plurality of ejector rods are fixedly connected to the upper portion of the third cushion block; the fixed seat is fixedly arranged above the second cushion block, an upper punch is fixedly arranged in the fixed seat, and third through holes with the same number as the ejector rods are formed in the fixed seat; a concave hole is formed in the upper end of the upper bottom pad, the lower end of the upper punch fixedly abuts against the lower portion of the upper bottom pad, a fourth through hole is formed in the upper bottom pad, the upper end of the upper bottom pad communicates with the concave hole, and the ejector rod is slidably arranged in the third through hole and the fourth through hole; and the upper ejection block is arranged in the concave hole in a sliding manner, and the upper ejection block is fixedly connected with the ejection rod. The machining efficiency can be improved, and raw materials are saved.

The application discloses a forage loader, which comprises a loading vehicle, an automatic control telescopic rod of a main beam, a pushing rod and a bearing frame cover, the front side of the loading vehicle is connected with a support main beam, the automatic control telescopic rod of the main beam is rotationally connected with the loading vehicle and the side of the support main beam at the two ends, the pushing rod is connected at the side of the upper tooth claw, the other end of the pushing rod is provided with a movable metal sheet, the outer side of the support main beam is fixedly provided with a lateral fixing frame, the front side of the lateral fixing frame is fixedly provided with a servo motor, a driving gear is rotationally installed at the inner side of the lateral fixing frame, and the bearing frame cover is installed at the side of the support auxiliary beam. The forage loader is provided with a forage loading anti-falling and collecting structure, the forage loading structure and the collecting structure are provided with dust vibration structures at the sides, dust mixed in the forage can be vibrated and separated during the loading and moving of the forage, and the application function of the loader is increased.

The utility model discloses novel logistics carrying equipment which comprises a vehicle platform, a rotating mechanism is arranged at the top of the vehicle platform, a horizontal moving mechanism is arranged on the rotating mechanism, a lifting mechanism is arranged on the horizontal moving mechanism, a clamping mechanism is arranged at the bottom of the lifting mechanism, and the rotating mechanism comprises a driving pinion motor. The driving pinion motor is arranged at the bottom of the car frame top plate, a driving pinion is arranged at the top of the driving pinion motor, and an outer tooth rotation supporting bearing is arranged on the outer side of the circumference of the driving pinion; and the second camera is arranged at the bottom of the vehicle platform middle plate. The steering engine drives a tooth groove in the upper portion of the right side gear grabbing clamp to rotate leftwards to be meshed with a gear of the left side grabbing clamp, an object needing to be clamped is clamped, the clamped object can be conveniently transported in the later period, and therefore accurate carrying is achieved, and errors are reduced; the operation is stable, the fault probability is reduced, and the logistics operation efficiency and quality are remarkably improved.

The invention discloses a multi-tooth indexing table control device based on an inductance type encoder, closed-loop control is carried out through the inductance type encoder, the real-time angle value of a multi-tooth indexing table is obtained according to terminal feedback, the control device adopts an STM32 single-chip microcomputer as a main control chip of a control circuit, a lifting motor and a transposition motor are controlled through PWM signals, and the control circuit is connected with the control device. Driving force is transmitted to an upper fluted disc of the multi-tooth indexing table, so that the multi-tooth indexing table can accurately complete ascending, descending and transposition operations; closed-loop control is achieved through the inductive encoder, interference of external environments such as electricity, a magnetic field and a force field on control signals is effectively avoided, the fault probability of the multi-tooth indexing table is reduced, and the angle output or measurement precision of the multi-tooth indexing table is improved; the main control chip of the control circuit adopts an STM32 single-chip microcomputer, and has the advantages of small size, low power consumption, strong stability and rich resources.

The invention discloses a gear deburring device which comprises a rack, a driving motor, a lower fixing mechanism, a first air cylinder, an upper fixing mechanism and a tooth surface polishing mechanism. The driving motor is arranged on the rack, the lower fixing mechanism is arranged on an output shaft of the motor, and the lower fixing mechanism can fix a gear from an inner ring of the gear; the first air cylinder is arranged on the machine frame, the upper fixing mechanism is arranged on an output shaft of the first air cylinder, the upper fixing mechanism descends to relieve fixation of the lower fixing structure on the gear, the gear is fixed again from the inner ring of the gear, and the gear is lifted by keeping fixation; the tooth surface polishing mechanism is telescopically arranged on the rack and can polish and deburr the upper tooth surface and the lower tooth surface of the gear. According to the gear deburring device, after the gear surface on one side is polished and deburred, the other side can be automatically polished and deburred.

The present application relates to a kind of generator stator core press mounting method.By executing the steps of generator stator core press mounting method, stator core is divided into first section glue mounting core, multiple section intermediate press mounting core and tail section glue mounting core, and different press mounting means is used respectively, so that the pre-press height adjustment space is larger, and the threaded pull rod assembly and upper tooth pressure plate of stator core original are used, the problem that stator core is stacked in the top end part close to design height and cannot be pre-pressed tightly in real time is solved, the difficulty of stator core press mounting is reduced, and the press mounting quality of generator stator core is stable and reliable.

The utility model discloses a raw material cutting device for wind power tower thick plate door frame production, a cutting mechanism comprises a lifting rail, the bottom of the lifting rail is fixedly connected with an upper chain wheel, the inner side of the lifting rail is slidably connected with a lifting block, one end of the lifting block extends to the outside of the lifting rail, and the other end of the lifting block is connected with a lower chain wheel. A rotating block is movably installed at the end, located outside the lifting rail, of the lifting block, a fixed hoop ring is fixedly connected to the side edge of the face, away from the lifting block, of the rotating block, a movable hoop ring is further slidably connected to the outer wall, close to the fixed hoop ring, of the rotating block, and threading holes are formed in the ends of the outer walls of the fixed hoop ring and the movable hoop ring correspondingly; the flame cutting gun is clamped and fixed together through the fixed hoop ring and the movable hoop ring, and the fixed flame cutting gun is limited in the moving direction through the arranged lifting rail, so that it can be guaranteed that the cutting track is straight when an operator holds the flame cutting gun, and the cutting effect can be improved easily.

The chip removal mechanism comprises a machine tool body, an opening is formed in one end of the machine tool body, a groove is formed in one side of the machine tool body, an inner cavity of the groove is connected with a fixing plate, an operation table is installed on the upper side of the fixing plate, an upper fluted disc and a lower fluted disc are arranged at the two ends of the machine tool body, and gears are arranged on the inner side of the upper fluted disc and the inner side of the lower fluted disc. One end of the gear is fixedly connected with a connecting rod, one side of the connecting rod is fixedly connected with a push block, one side of the connecting rod is connected with a small shaft disc, chippings on the surface of the operation table fall into the conveying belt after being pushed by the push block, the chippings cannot be separated leftwards and rightwards through a guardrail on the surface of the conveying belt, and the chippings cannot be stacked together through a check block. Chippings on the surface of the conveying belt fall into a collecting box through operation of a second motor, the purpose of chip removal is achieved, the functionality and practicability of the device are improved, and the problem that an existing chip removal mechanism of the machine tool body cannot continuously remove the chippings on the machine tool body is solved.

The invention discloses a pretreatment device for pesticide residue detection sample preparation, belongs to the technical field of pesticide residue detection, and provides the following scheme that the pretreatment device comprises a cleaning treatment mechanism, a pretreatment mechanism is arranged on the cleaning treatment mechanism, the cleaning treatment mechanism comprises a treatment box, and a drying assembly is arranged on the front side of the treatment box; a cleaning assembly and a limiting assembly are arranged in the treatment box, and a columnar cleaning head of the cleaning assembly is mounted on a sealing net cover of the limiting assembly; the driving assembly drives the vibration type smashing assembly to rotate, after the gear and the upper tooth section are in transmission, the vibration type smashing assembly conducts vibration smashing on a sample in the sample barrel, the sample barrel rotates along with the vibration type smashing assembly, the sample can be smashed in a rolling mode, the smashing effect is improved, and the situation that pesticide extraction is insufficient and detection accuracy is affected due to uneven smashing is avoided; and the intelligent sensor is combined to accurately control the amount of the sample, so that the consistency of the pretreated sample is further guaranteed.

The utility model discloses a medical examination oscillation device, and relates to the technical field of medical examination. Comprising a fixed outer frame, a fixed ring and a fixed bottom plate are fixedly arranged on the inner wall of the fixed outer frame, the top of the outer wall of the fixed bottom plate is fixedly arranged on the fixed ring, a rotating plate is rotationally embedded between the fixed outer frame and the fixed ring, and a plurality of extension rods are fixedly arranged on the top of the outer wall of the rotating plate along the circumferential surface at equal intervals; the outer walls of the multiple extension rods are slidably sleeved with an oscillation frame, the outer wall of the oscillation frame is slidably embedded in a fixed outer frame, tension springs are fixedly arranged at the tops of the outer walls of the multiple extension rods, and the top ends of the tension springs are fixedly arranged in the oscillation frame. Through the rotating plate, the extension rod, the oscillating frame, the tension spring, the upper tooth frame and the lower tooth frame, the oscillating and rotating processes can be automatically completed through motor driving, manpower and time are remarkably saved, the oscillating frequency and efficiency can be controlled, and oscillating treatment can be conveniently conducted on materials of a human body.

The utility model belongs to the technical field of special production equipment of automobile suspension system, especially relates to a quenching forming machine of automatic tooth adjusting of automobile plate spring and guide arm. Including frame, the frame is connected with the upper tooth seat through the forming guide rail, the forming oil jar, the upper tooth seat is clamped with a plurality of upper harrow teeth in through locking mechanism, the upper harrow tooth is separated and has the friction block, the lower part of frame is fixed with the lower tooth seat, the lower tooth seat is clamped with a plurality of lower harrow teeth in through locking mechanism, the lower harrow tooth is separated and has the friction block, the lower tooth seat is fixed with the lower support seat, the frame is installed with the pressure cylinder, the pressure cylinder output is fixed with the pressure plate, one side of frame is installed with the tooth adjusting mechanism, and the tooth adjusting mechanism is equipped with a plurality of tooth adjusting cylinders. The utility model can input the shape data of workpiece in the control system, and can automatically and quickly complete the harrow tooth height adjustment in a short time, greatly saves the time of manual adjustment of harrow tooth of multi-harrow tooth type quenching forming machine.

A kind of measuring tool of serrated tooth surface coating thickness, including beam assembly, first measurement component is arranged at the left end of the beam assembly for detecting the coating thickness of the upper tooth surface of low pressure turbine baffle;Second measurement component is arranged at the right end of beam assembly for detecting the coating thickness of the lower tooth surface of low pressure turbine baffle;Positioning member is arranged on beam assembly for being inserted in the counterbore of low pressure turbine baffle and positioning;First measurement component includes first lever and first dial gauge;First lever can rotate around first pin shaft in the middle, and the right end of first lever is measurement end, and the left end top surface is in contact with the measuring head of first dial gauge;Second measurement component includes second lever and second dial gauge, and second lever can rotate around second pin shaft in the middle, and the left end of second lever is measurement end, and the right end top surface is in contact with the measuring head of second dial gauge.

The utility model relates to an intermediate shaft blank secondary extrusion forming device which comprises an upper die plate and a lower die plate which correspond to each other up and down, a lower die core with a lower tooth blank positioning core hole is fixedly arranged on the top surface of the lower die plate, sliding die holders capable of transversely sliding are arranged on the two sides of the lower die plate, and core grooves are formed in the opposite sides of the two die holders. An outer limiting base is fixed to the bottom face of the upper die plate, a sliding hole is formed in the outer limiting base in the vertical direction in a penetrating mode, an inner limiting sleeve capable of vertically sliding is arranged in the sliding hole, a limiting hole is formed in the inner limiting sleeve, and the lower portion of the upper die plate is provided with a lower tooth blank positioning core hole. The upper die core is fixed to the portion, on the inner side of the limiting hole, of the upper die plate and provided with the extrusion core hole, the circular truncated cone part of the sliding die base is wedged into the lower end of the inner limiting sleeve to achieve positioning during die assembly, then the upper die core is pressed downwards to complete blank extrusion forming, accurate alignment is achieved through wedge-shaped matching of the sliding die base and the limiting sleeve, and the extrusion forming precision and efficiency are improved.

The utility model relates to a generator stator collector ring support positioning tool. The generator stator collector ring support positioning tool comprises a positioning ruler, a supporting block and a standard ruler. The positioning ruler is vertically mounted at the tail of the standard ruler; the supporting block is vertically mounted in the middle of the standard ruler; the thicknesses of the positioning ruler, the supporting block and the standard ruler do not exceed the width of a ventilation slot between two stator laminations, the length of the standard ruler is the horizontal length from the inner wall of the stator core to the center of the collector ring support, and the length of the supporting block does not exceed the length from the upper tooth pressing plate to the inner wall of the stator core. According to the scheme provided by the invention, the positioning device can be formed by the positioning ruler, the supporting block and the standard ruler, the horizontal length from the inner wall of the stator core to the center of the collector ring bracket is fixed on the standard ruler, the supporting block is used for fixing, so that the outer edge of the positioning ruler is tightly attached to the inner wall of the stator lamination, the tool is mounted at a required position, and a mark is quickly made; and the process of repeatedly measuring and positioning each collector ring bracket is reduced, and the construction efficiency is greatly improved.

The present invention discloses a powder outlet structure and a coffee grinder adopting the powder outlet structure, mainly relating to the technical field of coffee grinders; it includes a powder outlet pipe, an upper bracket is arranged on the upper part of the powder outlet pipe, a lower bracket is arranged on the lower part of the powder outlet pipe, the upper bracket and the lower bracket are connected by a connecting piece, an annular upper tooth seat is arranged on the outer wall of the powder outlet pipe, a plurality of upper vibrating teeth are evenly arranged along the circumferential direction of the upper tooth seat at the bottom of the upper tooth seat, a powder outlet nozzle is arranged at the bottom of the lower bracket, a knob is arranged at the top of the powder outlet nozzle, the knob is detachably connected to the powder outlet nozzle, the lower bracket is limited in the knob and the knob is rotatably connected to the lower bracket, an annular lower tooth seat is arranged on the upper part of the powder outlet nozzle, lower vibrating teeth adapted to the upper vibrating teeth are arranged at the top of the lower tooth seat, and the lower vibrating teeth are in contact with the upper vibrating teeth; the present invention can effectively shake off the powder in the powder outlet pipe and is convenient to use.

The utility model discloses a safe pneumatic normally-closed brake, and belongs to the technical field of industrial brakes. The safe pneumatic normally-closed brake comprises a shaft tube, an upper fluted disc fixedly arranged at the input end of the shaft tube, and an outer fluted disc rotationally connected to the outer side of the upper fluted disc and located at the output end of the shaft tube. The driving fluted disc is arranged between the upper fluted disc and the outer fluted disc and moves in the axial direction of the shaft tube; the pressure source inlet is formed in the side, close to the upper fluted disc, of the driving fluted disc and used for allowing a pressure source to enter, so that the driving fluted disc moves to be meshed with the outer fluted disc; the spring hole is formed in one side, close to the driving fluted disc, of the outer fluted disc. According to the safe pneumatic normally-closed brake, the normally-closed design is achieved through the brake spring, the requirement for long-term combination of working conditions is met, the system stability and reliability are improved, the brake state can be kept in the low-air-pressure or non-air-pressure environment, and the problem that the torque is reduced due to insufficient air pressure is effectively solved.

The invention belongs to the technical field of special production equipment for automobile suspension systems, and particularly relates to a quenching forming machine capable of automatically adjusting teeth for an automobile plate spring and a guide arm. Comprising a rack, the rack is connected with an upper tooth holder through a forming guide rail and a forming oil cylinder, a plurality of upper rake teeth are clamped in the upper tooth holder through a locking mechanism, friction blocks are arranged between the upper rake teeth, a lower tooth holder is fixed to the lower portion of the rack, a plurality of lower rake teeth are clamped in the lower tooth holder through a locking mechanism, and friction blocks are arranged between the lower rake teeth. A lower supporting base is fixed to the lower tooth base, a pressing oil cylinder is installed on the machine frame, a pressing plate is fixed to the output end of the pressing oil cylinder, a tooth adjusting mechanism is installed on one side of the machine frame, and a plurality of tooth adjusting air cylinders are arranged in the tooth adjusting mechanism. According to the invention, the shape data of a workpiece can be input into a control system, so that the height adjustment of the rake teeth can be automatically and quickly completed in a short time, and the time for manually adjusting the rake teeth of the multi-rake-tooth type quenching forming machine is greatly saved.

The application discloses a wireless electric toothbrush, which comprises an upper tooth holder, a lower tooth holder, a concave silica gel toothbrush, a light touch switch, a convex boss, a circuit board, a bottom plate one, a bottom plate two, a sound wave motor and a food-grade RTV silica gel adhesive.

The invention discloses camera lens assembling and processing equipment, and relates to the technical field of lens assembling, the camera lens assembling and processing equipment comprises an assembling frame, a sliding rail piece horizontally sliding is installed on the assembling frame, a cylinder sliding on the sliding rail piece is connected with an assembling head, and the assembling head comprises a limiting plate, an upper tooth frame, a lower tooth frame, a rotating rod and a vacuum suction cup; the upper tooth frame and the lower tooth frame are fixed through the supporting frame and are sequentially arranged from top to bottom, and the supporting frame slides along the guide frame. According to the assembling head, an upper tooth frame, a lower tooth frame, a limiting strip and a strip-shaped groove are matched, the rotating angle and the lifting stroke of a rotating rod are controlled, and therefore adsorption and release of a vacuum suction cup and opening and closing of a clamping claw are controlled in a linkage mode; the optical surface of the lens or the sensitive part of the module is prevented from being directly contacted, and the whole process from grabbing the lens assembly to pressing the lens assembly into the module is completed on one station.

The application relates to an intelligent gear sleeve pressing special machine and a working method thereof. The machine comprises a rack, a rotating disc arranged in the middle of the rack, at least one tooling piece, each tooling piece being arranged on the rotating disc, the tooling piece being suitable for bearing a lower shaft sleeve, a gear body and an upper shaft sleeve, a first sleeve mechanism suitable for placing the lower shaft sleeve on the tooling piece, an upper tooth mechanism suitable for placing the gear body on the tooling piece, the gear body being located above the lower shaft sleeve, an oiling mechanism suitable for adding lubricating oil into the gear body, a second sleeve mechanism suitable for placing the upper shaft sleeve on the tooling piece, and a pressing mechanism suitable for pressing the upper shaft sleeve and the lower shaft sleeve on the tooling piece into the gear body, so that a finished gear piece is obtained. Automation of gear piece machining is realized, gear piece production is greatly improved, and production manufacturing cost is reduced.

The utility model relates to a light-force presser foot and upper tooth lifting adjusting lever structure which comprises an adjusting assembly, a presser foot lifting frame and an upper tooth lifting frame, the adjusting assembly comprises a fixing base, a connecting rod, a transmission rod, a lifting frame and a pulling rod, the fixing base is fixed to a sewing machine, a mounting base is fixed to the top of the left side of the fixing base, and a connecting shaft is rotationally connected to the mounting base; the top end of the connecting rod is rotatably connected with the mounting base through a connecting shaft, the other end of the connecting rod is hinged to the end of the transmission rod, the bottom end of the connecting rod is arranged downwards in a rightward inclined mode, and the middle of the lifting frame is rotatably connected to the sewing machine. The end, away from the connecting rod, of the transmission rod inclines rightwards and extends upwards. The bottom end of a pulling rod is fixed to the middle of the lifting frame. The mounting base is arranged on the left side of the fixing base, the length of the connecting rod is increased, the lever effect of the connecting rod is enhanced, pulling of the pulling rod is more labor-saving, and use of the sewing machine is facilitated.

The invention discloses a sine ripple outer rotor single-channel winding type rotary transformer and system. The transformer comprises a stator, a rotor, an excitation winding, a sine signal winding and a cosine signal winding. The rotor is sleeved outside the stator; a plurality of stator teeth are arranged on the outer portion of the stator in the circumferential direction, each stator tooth comprises an upper tooth and a lower tooth, the upper teeth and the lower teeth are arranged in the axial direction of the stator, and gaps are formed between the upper teeth and the lower teeth; the sine signal winding and the cosine signal winding are arranged on each stator tooth; the rotor is of a sine ripple structure in the axial direction, and the excitation winding is arranged on the rotor. The transformer has the advantages of being high in measurement precision and small in size.

The utility model discloses a construction site pipeline support structure which comprises a movable bottom plate, the top of the movable bottom plate is rotationally connected with a threaded cylinder through a bearing piece, a rotating rod is fixedly connected to the position, located on the inner side of the threaded cylinder, of the top of the movable bottom plate, and a supporting column is fixedly connected to the top end of the rotating rod. The utility model relates to the technical field of pipeline supports. According to the construction site pipeline support structure, a threaded cylinder is rotationally mounted at the top of the movable bottom plate, a threaded plate is in threaded connection with the surface of the threaded cylinder, and the threaded cylinder is used in cooperation with a conical insertion rod and a lower tooth ring, so that equipment can be conveniently moved through the arrangement of the structures; and after moving is completed, a threaded cylinder can be rotated to push a conical insertion rod to be inserted into the ground for fixing, meanwhile, rotation of an upper tooth ring can be restored, the direction of a bearing rod below is adjusted, the pipeline laying number is increased, transportation is facilitated, and meanwhile the overall practical functionality is improved.

The application discloses a double-speed speed reducer for a bending machine, which comprises a servo motor, horizontal bevel gears, vertical bevel gears and a three-piece clutch. The servo motor is fixed to a right-angle support, and the output shaft is connected to a center double-sun gear through the bevel gears. The three-piece clutch comprises an upper tooth chuck, a middle double-sided tooth chuck and a lower tooth chuck, and realizes clutch switching in cooperation with a traction electromagnet. An upper machine stand and four other parts constitute an outer shell, and a planetary gear system and an inner ring gear are arranged in the outer shell. An output connecting sleeve is connected to the center double-sun gear through splines. The speed reducer can automatically switch two kinds of speed reduction ratios. The large speed reduction ratio is used for slow work of a main shaft, and the small speed reduction ratio is used for fast feeding and fast returning. The speed reducer can reduce motor power, reduce power demand and cost of installed machines, and improve driving speed of a sliding block and working efficiency.

The utility model provides a quick dismounting structure of an outer wall scaffold, which relates to the technical field of surveying and mapping and comprises a horizontal rod, a vertical rod and an upper synchronous cover, the vertical rod is arranged at the head end of the horizontal rod, the upper synchronous cover axially slides in the middle of the vertical rod, and lower L-shaped connecting frames are welded and fixed at the bottom of the upper synchronous cover in an annular array mode. The upper synchronous cover is provided with axially-penetrating side penetrating grooves in an annular array mode, upper tooth blocks are arranged on the upper synchronous cover in an annular array mode, an upper limiting disc is arranged above the upper synchronous cover, and the top of the upper limiting disc is fixed to an upper supporting spring. An upper synchronous cover drives a plurality of connecting insertion plates to synchronously move upwards to be separated from the first connecting block, so that the first connecting block is separated and detached from a horizontal rod and a vertical rod, the process of detaching the connecting insertion plates one by one is omitted, and the problem that workers need to move upwards to separate and detach fasteners in four directions one by one during detaching is solved; and the dismounting workload of the fastener by personnel is large.

The invention relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool convenient for replacing cutters, which comprises a machine tool frame, a driving mechanism arranged in the machine tool frame, a cutter box arranged on the side edge of the driving mechanism, a switching mechanism arranged at the joint of the cutter box and the driving mechanism, and clamping mechanisms arranged at two ends of the switching mechanism, a limiting assembly is arranged on the inner side of the machine tool frame and comprises a frame arranged on the inner wall of the machine tool frame, a frame body is designed to be in a U shape, a lower tooth block is fixedly connected to the lower portion of the outer surface of the frame, and an upper tooth block is fixedly connected to the upper portion of the outer surface of the frame. According to the device, the limiting assembly is arranged on the tool conversion motion path, the clamping mechanism is driven to swing in the mode that an upper tooth block and a lower tooth block are meshed in a staggered mode, chippings are forced to fall off by means of the swing force, and the effect of removing the chippings attached to the outer surface of a tool bit is achieved.

The invention discloses a staggered tooth differential automatic universal head which comprises a box body, a transmission shaft arranged in the box body and a universal head main shaft connected with the transmission shaft. The first indexing mechanism and the second indexing mechanism are both of a staggered tooth differential structure. A staggered tooth differential structure of the first indexing mechanism comprises an upper fluted disc pair and a lower fluted disc pair which are composed of a first positioning fluted disc seat, a first indexing fluted disc and a second indexing fluted disc and have different indexing degrees, and differential indexing is achieved through differential motion of the two fluted disc pairs. Upper teeth of the first transposition fluted disc can be meshed with the first positioning fluted disc seat, lower teeth of the first transposition fluted disc can be meshed with the second transposition fluted disc, and the number of the upper teeth of the first transposition fluted disc is not equal to that of the lower teeth of the first transposition fluted disc; a staggered tooth differential structure of the second indexing mechanism comprises an upper fluted disc pair and a lower fluted disc pair which are composed of a second positioning fluted disc seat, a third indexing fluted disc and a fourth indexing fluted disc and have different indexing degrees, and differential indexing is achieved through differential motion of the two fluted disc pairs.