175results about How to "Easy to toggle" patented technology

The invention relates to the field of electrical connectors, in particular to a fireproof short-circuit electrical connector. The electrical connector comprises a shell component, more than two contact components are assembled in the shell component, each contact component comprises a contactor and a tail contact assembled in the shell component in tandem, a floating spring is mounted at the rear end of each contactor, each contactor in the initial state is in open-circuit with the corresponding tail contact, and shifting blocks used for shifting the contactors rearwards to enable the contactors to retract into corresponding mounting holes are further arranged on the shell component. When an aircraft is launched, each contactor and the corresponding tail contact are in open circuit, and short circuit of corresponding equipment cannot be caused; when the aircraft is assembled, the shifting blocks are shifted to enable the contactors to retract into the shell component so as to prevent the contactors from being damaged; after the aircraft is assembled, the shifting blocks are released. Thus, by the fireproof short-circuit electrical connector, the problem that contactors of an existing short-circuit electrical connector are in short circuit accidentally easily and damaged by the aircraft easily is solved.

The invention discloses a prepuce cutting stapler with a safety mechanism and relates to the technical field of medical appliances. The prepuce cutting stapler includes a shell, a concave base component, a pushing base, a trigger mechanism, a rotary knob, and the safety mechanism. The safety mechanism includes a clamp block and a bayonet lock, the clamp block is provided with a safety part matchedwith a pushing block and stopping the pushing block to move forward, and the clamp block has two positions, namely the safety position and the unlocking position, wherein the safety part is matched with the pushing block in the safety position, and the safety part is disengaged from the pushing block; the bayonet lock has two states which can be switched through the rotation of the rotary knob,and the two states include the non-trigger state and the trigger state, wherein the clamp block is controlled to be located at the safety position in the non-trigger state and the clamp bloc is located at the unlocking position in the trigger state. On the basis of original action functions, the rotary knob has the function of triggering the safety mechanism, the design is very ingenious, the safety position and the unlocking position of the clamp block are very convenient to switch by rotating the rotary knob, the mechanism can meet the requirement better, after being unlocked, the clamp block does not need to be abandoned, resources can not be wasted, and the stapler has very high market value.

The invention provides a roadheader cutting head with harrow teeth, a telescopic structure thereof and an accessory drilling tool, and belongs to mine equipment. The cutting head is improved from a cutting arm and a cutting head of an existing roadheader. The cutting head is characterized in that by means of a spline type sleeve shaft structure using ball driving, the structure that the original cutting arm does not stretch and retract or one end of the original cutting arm bears pressure during stretching and retracting becomes a scientific two-position pressure bearing telescopic structure, and if outer meshing gear transmission with increased weight is used for power transmission, transverse cutting force is nearly multiplied due to rotating inertia. An outer spraying mode is changed into an inner water spraying structure. The position of a high-pressure water seal is changed to a small-outer-diameter shaft tail to reduce abrasion and effectively cool cutting teeth, two hydraulic cylinders are used for providing longitudinal push force, and the defect that pushing and pulling depend on walking in the prior art is avoided due to direct and controllable pushing and pulling; the multifunctional movable harrow teeth are additionally arranged on the cutting head, so the cutting head has the function of a slag-raking machine; a plurality of shallow hole drilling tools are additionally arranged on the cutting arm and matched with a proper explosion technology, so the overall performance is better than that of a drill loader, valuable stone can be exploited, zero-cost driving is achieved, and the updated and novel roadheader which can truly hit soft and hard rock, including ultra-hard rock, is formed as a whole.

The invention provides a segmenting device for manufacturing dried carrots, and relates to the field of vegetable processing. The segmenting device for manufacturing the dried carrots comprises an operating platform, wherein a fixing plate is fixedly connected to the top part of the operating platform; a blanking bin is fixedly connected to the top part of the operating platform and is positionedin front of the fixing plate; a feeding device is arranged on the fixing plate, and a conveying device which is connected to a transmission device is arranged on the fixing plate; a cutting pipe is fixedly connected to the front surface of the fixing plate and is positioned at the left side of the conveying device; and the inner wall of the cutting pipe is fixedly connected to a cutting net. According to the segmenting device for manufacturing the dried cartos, the cutting net is arranged in the cutting pipe and is capable of segmenting the carrots conveyed by the conveying device while passing through the cutting net, and moreover, a segmenting blade can be rotated to dice the segmented carrots. The device is simple in structure, and suitable for popularization and use.

The invention relates to straightening equipment, in particular to track-and-field sprint belt straightening equipment. The track-and-field sprint belt straightening equipment can make workers more relaxed and can prevent tilting of a sprint belt. The track-and-field sprint belt straightening equipment comprises supports, sliding rods, sliding sleeves, holding rods, connecting blocks, swing rods,first springs and the like; the middles of the tops of the supports on the front and rear sides are in bolt connection with the sliding rods with a guiding function, the sliding sleeves are slidably arranged on the sliding rods, the holding rods are fixedly connected to the right sides of the sliding sleeves, and two connecting blocks are arranged on the left sides of the sliding sleeves respectively; the swing rods are rotationally connected to the upper parts of the front sides of the two connecting blocks. According to the equipment, the sprint belt can be clamped by movable clamp plates, so that the workers do not need to pull the sprint belt all the time, and the workers can be more relaxed; the sprint belt can be fixed through a fixing mechanism, so that the sprint belt is preventedfrom tilting.

The invention discloses a plastic particle screening device. The plastic particle screening device comprises a first screening box and a second screening box which are arranged obliquely, and the discharging end of the first screening box directly faces the upper part of the feeding end of the second screening box in a vertical direction. The discharging ends of the first screening box and the second screening box are open, and a base is further included, wherein the first screening box and the second screening box are fixedly mounted above the base by brackets, a first screen is disposed on the bottom surface of the first screening box, a second screen is disposed on the bottom surface of the second screening box, the screen diameter of the first screen is smaller than the screen diameterof the second screen, a first storage mechanism disposed at the lower end of the first screening box, a second storage mechanism disposed at the lower end of the second screening box, and a third storage box disposed under the discharging end of the second screening box. Material-pulling screening mechanisms are arranged in the first screening box and the second screening box.

The invention relates toa peanut equipment, in particular to agricultural peanut sun-drying equipment. The agricultural peanut sun-drying equipment is simple to operate and capable of saving time. According to the technical scheme, the agricultural peanut sun-drying equipment comprises a base, a supporting plate, a driving device, a third connecting rod, a first sliding block, a first annular sliding rail, a box body and a holding rod and the like, the supporting plate is bolted on the left side of the top of the base, two third connecting rods are rotationally connected to the front side andthe rear side of the base in a rotating mode, and a base plate with a supporting function is rotationally connected between the third connecting rods on the front side and the rear side. According tothe invention, the driving device works, so that the peanuts in the box body can move, the peanuts are subjected to sunning, so that people do not need to spread the peanuts, and the operation is simple. A holding rod can be blocked by clamping device, so that people can conveniently poke the peanuts in the box body into the collecting frame, so that the time can be saved.

The invention discloses a pressing device for a hydraulic scrap steel metal packing machine. The pressing device comprises a pressing device shell, a first pressing plate, a first slot, a first hydraulic push rod, a second hydraulic push rod and a second pressing plate, the right side of the material pressing device shell is provided with the second hydraulic push rod through bolts and threads, the right side of the second hydraulic push rod is welded with the second pressing plate, and the first hydraulic push rod is installed at the upper end of the right side of the pressing device shell through bolt threads. According to the pressing device for the hydraulic scrap steel metal packaging machine, after a plug pin is moved out of a second slot, a push plate is not fixed by the plug pin any more, elastic deformation of a first spring is recovered, the first spring pushes the push plate to move out of a limiting groove through a second push rod, and the convenience of the device is improved; and through pressing a shifting plate, the shifting plate pushes the first push rod to move in a second spring groove, so that the shifting plate is parallel to the surface of the shell of the pressing device, the shifting plate is pushed, and the shifting plate drives a sliding block to move in the sliding groove through the first push rod, so the practicability of the device is improved.

The invention discloses a compost powder raw material drying device. The compost powder raw material drying device comprises a base, wherein a drying box is fixedly connected to the upper surface of the base, a fixing cover is arranged in the drying box, two first air cylinders are fixedly connected to the inner top wall of the drying box, and the telescopic ends of the two first air cylinders arefixedly connected with the upper surface of the fixing cover; a drying machine is fixedly connected to one side of the outer wall of the drying box, a plurality of drying heads are fixedly connectedto the top of the drying box in an embedded manner, a motor is fixedly connected to the inner side wall of the fixing cover, a threaded rod is fixedly connected to the driving end of the motor, and the end, away from the motor, of the threaded rod is rotationally connected with the inner side wall of the fixing cover; and the outer surface of the threaded rod is sleeved with a plurality of threaded sleeves in a threaded manner. According to the compost powder raw material drying device, by stirring compost back and forth, the interior of the compost can be fully dried, drying is more uniform,and the drying speed is improved; and meanwhile, discharging is more convenient, and the labor force is saved.

The invention discloses a pipe inner surface acid pickling device and method. The pipe inner surface acid pickling device comprises a pipe feeding rack, a feeding mechanism, an acid pickling mechanism, a soaking tank and a monitoring module. The pipe feeding rack comprises a rack body, a containing mechanism and a pipe conveying mechanism. A shifting mechanism is located on the rack body. The acidpickling mechanism comprises an acid pickling chamber, a lifting mechanism and a nozzle mechanism. The nozzle mechanism is connected with an acid supply mechanism, a water supply mechanism and an airsupply mechanism. A conveying groove for placing a pipe is formed in the pipe conveying mechanism. The monitoring module comprises a monitoring box and a microcontroller. A limiting sensor and a counting sensor are arranged in the pipe conveying mechanism. The method comprises the following steps that 1, feeding a pipe; 2, conveying the pipe; 3, lifting and pressing the pipe; 4, pickling, washingand drying the pipe; and 5, soaking the pipe. Feeding, acid pickling, flushing, drying and soaking of the pipe are achieved, manual participation is reduced, and the production efficiency is high.

The invention discloses a floating seed self-separating type water separating device for animal husbandry grass seed planting. The device comprises a seed screening box body, a floating seed separating inclination wedge which is mounted in the top end of the seed screening box body, and a pushing rod mechanism which is arranged on the top part of the seed screening box body, wherein the floating seed separating inclination wedge is fixed into the middle part of the seed screening box body; a floating seed cleaning port and a seed feeding port are correspondingly formed in two upper sides of the floating seed separation inclination wedge; a pushing port is arranged above the floating seed separation inclination wedge, and the pushing rod mechanism horizontally glidingly passes through the pushing port; and the seed feeding port communicates with a seed settlement channel in the seed screening box body. According to the device, the pushing rod mechanism reciprocates, and thus floating seeds can be conveniently pushed through a floating seed pushing brush; the separating rate of the floating seeds and full seeds in the seeds can be increased; and moreover, the seed settlement channelcan be prevented from blockage; the device is applicable to water separation operation of massive animal husbandry planting grass seeds; the floating seeds and the full seeds can be separated withoutmanual operation; the working efficiency is high; and the working intensity of people is reduced.

The invention relates to a multifunctional electric bicycle which comprises a front frame, a rear frame, a saddle, a handlebar connecting part I, a handlebar connecting part II, a handlebar I, a handlebar II, a pedal plate, a front wheel outer ring, a front wheel inner ring, a rear wheel outer ring, a front wheel tire, a rear wheel tire and a hub motor. The pedal plate is fixedly connected with the front wheel inner ring, the front wheel inner ring is fixedly connected with the front wheel outer ring, and the front frame can rotate around the front wheel inner ring. A battery holder can slide with respect to the rear frame, a battery used by the hub motor is fixed inside the battery holder, the hub motor is installed in the rear wheel outer ring, and a stator of the hub motor is fixedly connected with the battery holder. A power supply switch is located on the handlebar connecting parts. A folding device is arranged below the saddle, and the front frame and the rear frame are movably connected through the folding device. The multifunctional electric bicycle has the advantages that folding of the front frame and the rear frame is achieved through a folding and fixing device, accordingly transformation between the electric bicycle and an electric skateboard is achieved, and the multifunctional electric bicycle is multi-purpose and small in size and greatly brings convenience to people for outgoing and entertainment.

The invention belongs to the technical field of vehicle detections, more particularly, to a special tool for detecting the thickness of a bendable friction block. The special tool comprises a ruler rod and ruler sleeve. The ruler sleeve is capable of being arranged on the ruler rod in a rotation and sliding manner. The length of the ruler sleeve is smaller than that of the ruler rod. The two ends of the ruler rod are respectively provided with a pressing and leaning section and a data reading section. The data reading section is provided with scales in the axial direction. The outer circumferential surface of the ruler sleeve close to the pressing and leaning section is fixedly provided with a connection rod; the connection rod is located in the radial direction of the ruler sleeve. The connection rod is articulated with a pressing head; and the articulation center line is parallel with the central shaft of the ruler sleeve. The top wall of the pressing head is closely attached with the bottom wall of the connection rod; the difference between the lengths of the ruler rod and the ruler sleeve is equal to the measurement range of the scale. The zero scale value of the scale is what is obtained when the top wall of the pressing head is aligned with the lower end wall of the pressing and leaning section. The special tool is advantageous in the following aspects. It can conveniently penetrate the clearance between the wheel hubs. It has a long contact length which allows it to be conveniently in contact with a friction block and makes it applied more widely. The tool is capable of measuring precisely and accurately under the condition that the brake disc is not dismantled. Convenient to use, the tool has a simple structure and can be manufactured conveniently.

The invention discloses a high-strength fastener automatic heat treatment device. The high-strength fastener automatic heat treatment device comprises a bolt regular part, a bolt quenching part and abolt tempering part, wherein the bolt regular part comprises a mounting surface, a bolt toggle piece, a bolt placement piece and a computer, and the bolt toggle piece, the bolt placement piece and thecomputer are all arranged on the mounting surface; the bolt quenching part is disposed on the mounting surface and comprises a quenching transfer member and a quenching furnace, and the quenching transfer member and the quenching furnace are disposed on the mounting surface; and the bolt tempering member is disposed on the mounting surface and comprises a tempering transfer member and a temperingfurnace, and the tempering transfer member and the tempering furnace are disposed on the mounting surface. The device is reasonable in structural design, high in automation degree and uniform in heattreatment on the surface of a bolt, the overall performance of the bolt and the bolt quality are effectively improved, and the service life of the bolt is effectively prolonged.

The invention discloses a sand screening machine for indoor decoration and mainly relates to the field of building equipment. The sand screening machine comprises a rack, wherein a feed hopper is arranged at the top of the rack; a first sand screening box of which the upper and lower ends are opened is arranged on the lower side of the feed hopper; a second sand screening box of which the upper and lower ends are opened is arranged on the lower side of the first sand screening box; a first connecting rod is arranged at the rear end of the top of the second sand screening box; one end of the first connecting rod is hinged with the second sand screening box, and the other end of the first connecting rod is hinged with the first sand screening box; a second connecting rod is arranged at the front end of the bottom of the second sand screening box; one end of the second connecting rod is hinged with the second sand screening box, and the other end of the second connecting rod is hinged with a crank; an inclined chute is formed in the lower side of the second sand screening box. The sand screening machine disclosed by the invention has the beneficial effects that two-stage screening canbe performed, the two-stage screening can be driven to simultaneously start by drive equipment, and the energy consumption can be reduced. Moreover, manual driving can be performed in an unpowered state, and various requirements of indoor decoration can be met.

The invention relates to a tool in the field of construction and particularly relates to a spiral ground pile applied to gobi topography with more roundstone, geology with hard soil quality and other geologies. The spiral ground pile comprises a pile body, wherein one end of the pile body is provided with an externally-connected end, and the other end of the pile body is a rotary bit end; the external peripheral surface of the pile body is provided with a helical blade; the rotary bit end comprises a bit body positioned at the center of the end part; and the outer side of the bit body is provided with multiple oblique pull sheets which deflex towards a same direction. The invention further provides a spiral ground pile which can be used for effectively loosening large particulate matters such as breccia and roundstone, has better propulsive force and loosening force, can be conveniently inserted into the gobi topography with more roundstone, and is small in energy consumption; and the spiral ground pile can be used for solving the technical problems that the ground pile in the prior art is only applicable to common soil quality, is high in energy consumption and poor in strength.

The invention discloses an environment-friendly auxiliary fixing device for goaf grouting and an operation method thereof, and belongs to the field of goaf grouting. The environment-friendly auxiliary fixing device for goaf grouting comprises a stirring tank and a conveying tank, and a grouting pipe is in threaded connection with the interior of a rotating disc; an inner pipe is arranged in the grouting pipe, an auxiliary part and an air cylinder assembly which are matched with each other are connected in the grouting pipe, the outer wall of the grouting pipe is connected with an air bag, and the air bag is in communication with the air cylinder assembly; and a pin is further connected into the grouting pipe in a sliding mode. According to the environment-friendly auxiliary fixing device, grouting materials can be stirred to be convenient to convey, the grouting pipe can be connected more stably through the air bag and the pin, the air bag is attached to the inner wall of a grouting hole after being expanded, the grouting materials cannot be discharged and blocked, waste caused by overflowing is avoided, and polluted smoke can only rise along the grouting pipe, the polluted smoke is prevented from being discharged into air through a gap between the grouting hole and the grouting pipe, the environment is prevented from being polluted, and environmental protection is facilitated.

The invention belongs to the technical field of agricultural technology development, particularly relates to pesticide mixing equipment for agricultural technology development. In view of the problemthat a pesticide diluting device in traditional agriculture is relatively simple in design and relatively single in mode, so that the diluting and mixing effect is relatively common, the following scheme is provided. The equipment comprises a cavity plate, a medicine mixing tank is fixed to the outer wall of the top of the cavity plate through bolts, a rotating motor is fixed to the outer wall ofthe top of the medicine mixing tank through bolts, and an output shaft of the rotating motor is connected with a rotating column through a coupler. According to the invention, through the arrangementof the rotating motor, a driving rod and an abutting ball can be driven to rotate, in the movement process of the abutting ball, an arc-shaped end plate is abutted, the arc-shaped end plate is enabledto horizontally reciprocate back and forth under the action of a reset spring, and under the action of an inclined stirring plate, liquid is effectively stirred, so that a mixing effect is realized;and through the arrangement of a sliding block, under the action of centrifugal force and the reset spring, the sliding block can also move back and forth, and a further mixing effect is achieved through movement of a liquid stirring disc.

The embodiment of the invention provides clothes treatment equipment which comprises an inner barrel, a driving device and a drainage valve assembly, and the inner barrel can contain water and is provided with a drainage hole; the drainage valve assembly comprises a valve element, a transmission rod mechanism, an elastic positioning piece and an elastic reset piece. The valve element is provided with a sealing position and a drainage position. The first end of the transmission rod mechanism drives the valve element to move, and in the rotating process of the inner barrel, the driving device can selectively stir the second end of the transmission rod mechanism so as to drive the transmission rod mechanism to rotate around the rotating center line; the elastic positioning piece can maintain the valve element at the sealing position or the drainage position, and the elastic reset piece at least can drive the second end of the transmission rod mechanism to reset. According to the clothes processing equipment, no matter how the rotating speed of the inner barrel is, the valve element can be switched between the sealing position and the drainage position only by rotating the transmission rod mechanism, drainage is facilitated, and reliability is high.

The invention discloses a limit platform for angle conversion welding of pipes for building construction. The limiting platform comprises a base and a connecting gear, wherein a center shaft is fixedly welded at the center of the top surface of the base, and a first sleeve ring is mounted on the center shaft; the first sleeve ring is welded on a straight plate; a connecting plate is fixedly weldedat the bottom surface of the left end of the straight plate, and the connecting plate is connected with a first connecting groove; the first connecting groove is formed in the outer surface of the base, the first connecting groove is connected with a limiting hole, and the limiting hole is formed in the base; and a bottom plate is arranged outside the straight plate. According to the limit platform for angle conversion welding of the pipes for building construction, the bottom plate can stably slide on the straight plate through a second connecting groove and a fixing shaft, so that the positions of the steel pipes can be translated conveniently after the steel pipes are clamped, mutual alignment of the steel pipes is facilitated, and subsequent welding work of the steel pipes is facilitated.

The invention relates to a drying device for garlic processing. The drying device includes a drying case, a driving mechanism, carrying mechanisms and material poking mechanisms; the driving mechanismis arranged in the drying case; multiple sets of the carrying mechanisms are equidistantly arranged along the transmission direction of the driving mechanism; the carrying mechanisms include limit assemblies connected to the driving mechanism and guiding assemblies for driving the limit assemblies to open and close up, and garlic is located in the limit assemblies; and the material poking mechanisms include reciprocating assemblies connected to the limit assemblies and poking assemblies installed on the driving mechanism and controlling the reciprocating movement of the reciprocating assemblies. Thus, the technical problems of poor drying effects at the connecting parts of the garlic and carriers thereof during drying can be solved.

The invention provides a Bluetooth earphone device, relates to the technical field of Bluetooth earphones, and solves the problems that an existing single-ear type Bluetooth earphone is generally placed in a pocket when being carried about and not used, but the size of the Bluetooth earphones is small, the Bluetooth earphones cannot be perceived when sliding out of the pocket, and the Bluetooth earphones do not have a loss warning function, thus when the Bluetooth earphones are lost from the pocket, reminding cannot be carried out at the first time. The Bluetooth earphone device comprises Bluetooth earphones and elastic clamping pieces, wherein the whole elastic clamping pieces are of a rectangular piece structure, the top end of each elastic clamping piece is of a 90-degree bending structure, and the elastic clamping pieces are fixedly installed on the front end surfaces of the Bluetooth earphones. According to the Bluetooth earphone device, when the Bluetooth earphones are separated from the pocket due to external factors, buzzers are started to make high-decibel sound under the condition that deformation is not hindered by the pocket, so that a user is reminded at the first time when the Bluetooth earphones are separated from the pocket, and the Bluetooth earphones are prevented from being lost.

The invention relates to the technical field of LED chip mounters and particularly relates to a material taking mechanism of an LED chip mounter, and aims to solve a problem that an LED chip mounter in the prior art is easy to cause inaccurate material suction positions during material taking. The material taking mechanism comprises a turntable, a driving mechanism mounted at the top of the turntable and two material taking mechanisms symmetrically mounted on a bottom surface of the turntable, wherein the material taking mechanism comprises a lifting motor, a longitudinally-arranged lifting assembly and a material suction base installed at the bottom of the lifting assembly, the lifting motor drives the lifting assembly to move in the longitudinal direction through a threaded column, a material suction nozzle is installed in the middle of the bottom face of the material suction base, and two longitudinally-arranged clamping plates are installed on the material suction base. The material taking mechanism is reasonable in structure and easy to operate, materials can be stirred to the position under the material suction nozzle when the materials are sucked, so accuracy of material suction is guaranteed, then precision of surface mounting is guaranteed, and the material suction mechanism is easy to popularize and use.

The invention discloses a wheat fine single-grain seeder suitable for individual development experiments. The wheat fine single-grain seeder comprises land wheels, a bracket, a handrail, a seeder, a transmission mechanism and the like. A seeding unit of the seeder comprises a frustum shell, a frustum turntable and a kick-out device, the frustum turntable is mounted in the frustum shell and can rotate, the frustum turntable selects out wheat grains in a horizontal state from wheat grains in a mixed state in a feed port of the frustum shell, stores the selected wheat grains in a material distribution groove, and transfers the selected wheat grains into the kick-out device; the wheat grains in the horizontal state are shifted and transferred to a seeding pipe one by one by a distributor. According to the wheat fine single-grain seeder suitable for the individual development experiments, only horizontal wheat grains in a large number of disorderly stacked wheat grains can be selected out, so that an inclined channel and an arc-shaped conveying channel are utilized to constrain the wheat grains, the horizontal wheat grains are stirred one by one by utilizing the kick-out device, and equal-interval single-grain seeding is realized. The single-seed sowing precision can be effectively ensured, and the phenomenon of repeated sowing of multiple seeds or the situation of miss-sowing can be avoided.

The invention provides a pickup device for a straw baler, and belongs to the field of agricultural baler devices. The pickup device comprises a machine frame, a rotating assembly, retainer assembliesand elastic claw assemblies. The rotating assembly is erected on the machine frame and rotationally connected with the machine frame. The elastic claw assemblies are fixedly arranged on the rotating assembly. The retainer assemblies are arranged on the outer ring of the rotating assembly. The retainer assemblies are arranged between every two adjacent elastic claw assemblies. A follower wheel assembly is arranged at the lower end of the machine frame. Supporting force arms are symmetrically arranged at the upper end of the machine frame. One end of each supporting force arm is hinged to the machine frame. The other end of each supporting force arm is provided with a floating wheel. A floating roller is erected on the symmetrical supporting force arms and rotationally connected with the supporting force arms. A positioning rod is arranged on each supporting force arm and provided with a plurality of comb teeth. The upper end of each positioning rod is provided with a limiting chain connected with a fixing piece. The pickup device is simple in structure, low in cost, high in carding efficiency, not prone to getting stuck, low in failure rate and stable in performance.