53results about How to "Guaranteed traction" patented technology

The invention discloses an intelligent pipe inner wall walking robot. The intelligent pipe inner wall walking robot comprises two machine bodies; the two machine bodies are connected through an universal joint; walking mechanisms and extension leg structures are respectively mounted at two unconnected ends of the machine bodies; in the working process, a WIFI module is remotely connected to control driving wheels; motors drive the driving wheels; the driving wheels drive the machine bodies to move in pipes; under the condition of meeting with curves, the rotating speeds of two driving wheel motors are adjusted, and the rotating speeds of the two wheels are asynchronous to realize curving; when the pipes suddenly change the diameters, the adaption to the pipe diameters is realized through extension mechanisms, specifically, the pressure is applied to the driving wheels and driven wheels by pipe walls, so that three machine legs are inwards gathered, and meanwhile, slide sleeves are driven to compress springs; and after normal pipe diameters are recovered, the springs push the slide sleeves to drive outward expansion of the machine legs so as to adapt to new pipe diameters. The intelligent pipe inner wall walking robot has the characteristics of simple structure, convenience and practicability.

The invention discloses a low-smoke zero-halogen damp-proof fire-resistant tensile-resistant industrial cable. The low-smoke zero-halogen damp-proof fire-resistant tensile-resistant industrial cable comprises a cable body, wherein the cable body comprises cable cores, a cable core protection layer, an insulation layer, a shielding layer and an outer sheath. The cross section of the cable core protection layer is of a round structure. A plurality of cable cores are arranged in the cable core protection layer. The gap portion between the cable core protection layer and the cable cores is filled with a filler. The gap portion formed in the cable core protection layer is provided with steel belt tensile-resistant wires. The insulation layer is arranged outside the cable core protection layer. A high-flame-retardant glass cotton tape is arranged between the insulation layer and the cable core protection layer. The shielding layer is extruded outside the insulation layer. A plurality of drainage cores are evenly arranged in the shielding layer. The shielding layer is composed of an inorganic substance filling layer, an armor layer and an aramid fiber woven reinforcement layer which are tightly extruded from inside to outside. The outer sheath is arranged outside the aramid fiber woven reinforcement layer. A high-temperature ceramic coating is arranged between the outer sheath and the aramid fiber woven reinforcement layer. The low-smoke zero-halogen damp-proof fire-resistant tensile-resistant industrial cable is reasonable in structural design and good in using effect and has excellent damp-proof fire-resistant characteristics.

The invention discloses a flexible magnetic absorption underwater wall climbing robot, Including a duplex stainless steel body, a Flexible-magnetically-attractive crawler travel device and a magneticforce compensation device, magnetic compensation devices are arrange at that front and rear of the airframe respectively, A magnetic force compensation device comprise a lifting bracket, Universal wheels and magnets, A lifting bracket comprises a lifting plate, Left lifting lever, the middle lifting lever and the right lifting lever, Left lifting lever, the middle part of the middle lifting lever and the right lifting lever penetrate the lifting plate and are fixedly connected with the lifting plate, Left lifting lever, the intermediate lifting lever and the right lifting lever are slidablyinstalled on the machine body, A left lifting lever and a right lifting lever are sleeved with springs, The upper ends of the springs are against the body, the lower ends of the springs are against the lifting plate, the bottom of the left lifting rod and the right lifting rod are both provided with attractive magnetic blocks, and the bottom of the middle lifting rod is provided with a universal wheel, which can solve the technical problem of cleaning the ship surface adhesives under water when the ship is sailing on the water surface.

The invention discloses an intelligent decontamination robot for a water supply pipeline. The intelligent decontamination robot comprises a traction mechanism, a transmission conveying mechanism, a stable power mechanism, a support adjusting mechanism and a dirt cleaning mechanism; the traction mechanism and the stable power mechanism are distributed and fixed to the two ends of the transmission conveying mechanism; the support adjusting mechanism is hinged to the transmission conveying mechanism; and the dirt cleaning mechanism is installed on the support adjusting mechanism. According to theintelligent decontamination robot for the water supply pipeline, the position of a reducing execution adjusting component relative to a first transmission part can be adjusted through a reducing feeding component, then the reducing execution adjusting component drives the distance between the support adjusting mechanism and the transmission conveying mechanism, so that the requirement for cleaning the inner sizes of different pipelines is met; the stable power mechanism drives the transmission conveying mechanism to rotate, so that the inner wall of the pipeline is rotationally cleaned, and the cleaning efficiency of the inner wall of the pipeline is improved; and the structure is simple, the practicability is high, manpower and material resources are reduced, and the cleaning speed of the inner wall of the pipeline is increased.

The invention relates to the field of punching machine automation, and particularly relates to an automatic discharging system used for a stamping production line. The automatic discharging system comprises a framework, transportation and adsorption systems, a work-piece transfer system, stacking systems, a waste material traction system and a waste material collection system; the framework is provided with at least three transportation and adsorption systems, the work-piece transfer system and the waste material traction system; a stacking system is respectively arranged below the transportation and adsorption systems which are located at the left side and the right side of the framework. The systems are combined according to the way in the invention, automatic discharging of the stamping production line, including, separation of the work-piece and the waste material, work-piece stacking, waste material collection and the like, can be realized conveniently and rapidly. In the application, only one framework system is needed for separation and transportation of the work-piece waste material, and two-side stacking of the work-pieces can be realized.

The invention provides a manufacturing production line of new material rich mineral paper. The manufacturing production line of the new material rich mineral paper is characterized by comprising a vacuum feeding machine, wherein the vacuum feeding machine is connected to a conical twin screw extruder, the conical twin screw extruder is connected to a plate type hydraulic screen exchanger, the plate type hydraulic screen exchanger is connected to a T-die extrusion die, the T-die extrusion die is connected to a four-roller calender, the output end of the four-roller calender is connected to guiding-out devices, the guiding-out devices are connected to cooling and shaping devices, the cooling and shaping devices are connected to a trimming and traction device, the trimming and traction deviceis connected to a laser thickness gauge, and the laser thickness gauge is connected to a double-station coiling machine. The manufacturing production line of the new material rich mineral paper has the advantages of utilizing the hot ductility of sheet materials of HDPE and mountain flour, mixing, feeding, heating, filtering and extruding sheet-shaped products are performance through a sheet extrusion device, the product is then thinned through the calender, the product can effectively reach the ideal thickness, and the surface smoothness of the sheet material is guaranteed; and the sheet material is cooled and shaped through a cooling roller, and then the sheet material is free of shrinkage, wrinkling and the like.

The invention discloses an assembly type skin retractor and belongs to surgical operating instruments. The assembly type skin retractor comprises an arc handle and a plurality of retractors connected with the handle, wherein a slide groove is arranged on the handle from bottom to top from the lower surface of the handle, two positioning strips are arranged on two lateral walls in the slide groove along the arc surface direction, and a plurality of clamping openings are arranged on the upper surfaces of the positioning strips. Positioning blocks sliding on the positioning strips are arranged at the upper ends of the retractors, and positioning protrusions capable of being clamped in the clamping openings are arranged on the two sides of the lower ends of the positioning blocks. The assembly type skin retractor is novel and flexible in structural design. The retractors with corresponding quantity can be installed according to patient needs and operation situations, burden of assistants is reduced, and only one assistant is needed. Additionally, optimal traction force is ensured, constant tension is kept, quick and continuous operations can be ensured, and possibility of complication is reduced.

The invention discloses a thyroidectomy lacuna tractor of an oral approach endoscope. The tractor comprises a rod body and a hook connected to one end of the rod body, wherein the hook is V-shaped andis of a hollow tubular structure, the hook comprises a puncture part in a straight tube shape and a traction part, bottom ends of the puncture part and the traction part are smoothly connected through an arc connecting part, a beveling needle point is arranged at the top end of the puncture part, and the top end of the traction part is connected with the rod body; and a handle is arranged at oneend, away from the hook, of the rod body. According to the thyroidectomy lacuna tractor of the oral approach endoscope, the tube diameter of the hook is small, so that tractor punctures easily, can easily pull strap muscle, cannot shield the surgery field and has a good exposure effect.

The invention provides an underwater robot traction mechanism. The underwater robot traction mechanism comprises: a ship body and a robot body; a winding structure which is arranged at the top of theship body, wherein the winding structure comprises a movable frame, and a partition plate is fixedly connected between the two sides of the inner wall of the movable frame. The underwater robot traction mechanism is simple to operate and convenient to use and can effectively tract a robot, a steel wire rope replaces a cable to serve as a traction force carrier, it is effectively avoided that the cable is fractured and damaged in the traction process, the traction force direction can be changed, the cable has a certain lifting and pulling effect, and it is avoided when the underwater robot is wound, the robot cannot be pulled; by arranging of a clamping structure, the cable is clamped to ensure the traction, lifting and pulling of the steel wire rope, drive the cable to perform traction, lifting and pulling and avoid winding and knotting of the cable.

The invention provides a mucous membrane traction device and an endoscopic system, and relates to the field of medical devices. The mucous membrane traction device comprises a tube body, a first clampand a traction piece, the first clamp is arranged at a far end of the tube body, the traction piece is provided with a first acting part and a second acting part, the first acting part acts on the far end of the tube body, the second acting part is used for acting on a far end of an endoscope, under a condition that the traction piece is pulled, the far end of the tube body and the far end of theendoscope are close to each other and keep fixed, and under a condition that the traction piece is loosened, the far end of the tube body and the far end of the endoscope can move independently. Theendoscopic system comprises the mucous membrane traction device. The mucous membrane traction device and the endoscopic system can keep a traction force of the traction piece on the premise that the first clamp is not added, the first clamp cannot be retained in human body after an operation is completed, and risks of safety accidents are reduced.

The invention relates to an output yarn traction method of yarns for carpet production and a special creel for method. A creel body of the special creel is of a structure composed of an upper layer, a lower layer and a middle yarn outlet, the upper-layer creel body and the lower-layer creel body are provided with multiple longitudinally-rowed yarn barrel positioning rods, and yarn guiding rods corresponding to each row of yarn barrel positioning rods and horizontally pulling the yarns out of the creel are evenly arranged at the position of the middle yarn outlet. The method adopting the special creel to perform output yarn traction is that the yarns on each row of yarn barrel positioning rods are pulled out and wound on the yarn guiding rods corresponding to the corresponding row of yarn barrel positioning rods, then the yarns wound on the yarn guiding rods are horizontally pulled out along the middle yarn outlet, horizontally penetrate a yarn guiding plate fixed on the outer side of the creel body and then are fed into a knitting machine. By adopting the output yarn traction method of the yarns for the carpet production and the special creel for the method, yarn outlet angles and tensions of each layer of yarns can be ensured to be consistent, and the product quality and aesthetic degree are improved.

The invention discloses a traction device for an underwater winch. The traction device comprises a cable outlet, a cable inlet, supporting plates, a traction mechanism, a cable pressing mechanism anda cable diameter detecting mechanism. The supporting plates are symmetrically arranged to form a mounting area. The cable outlet and the cable inlet are formed in the left ends and the right ends of the supporting plates correspondingly, and the cable diameter detecting mechanism is arranged at the rear end of the cable inlet and used for detecting the cable diameter. The traction mechanism and the cable pressing mechanism are arranged in the mounting area, a cable is pressed on the traction mechanism through the cable pressing mechanism, and the cable is moved from the cable inlet to the cable outlet through the traction mechanism. The traction device is used in cooperation with the underwater winch, so that when the underwater winch winds up and pays off the cable, the cable between a winch drum and the traction mechanism keeps certain tension all the time, and the winch drum discharges the orderly and dense cable. Online cable diameter detection is achieved in cooperation with the cable diameter detecting mechanism, a matched pressing wheel is automatically switched, and the traction force of the cable is guaranteed.

The invention discloses a special drilling machine applied to a coal mine getting working face, wherein a propulsion unit of the special drilling machine adopts an air cylinder for driving, a piston of the air cylinder is dragged by a cable rope which is a steel wire cable rope, and a plastic wrapping layer is wrapped at the exterior of the steel wire cable rope. The invention has the advantages that the air cylinder is utilized to push a drill pipe and adopts the cable rope instead of a piston rod to connect the piston, thereby solving the problem that the piston rod occupies a large space during commanding; the cable rope is the steel wire cable rope, and the plastic wrapping layer is wrapped at the exterior of the steel wire cable rope so that the cable rope and the seal ring of an aircylinder end cover form favorable sealing during passing in and out the air cylinder to prevent dust from entering into the air cylinder, and in addition, the cable rope passing in and out the air cylinder is blown to be clean by internal exhaust air generated by the operation of drainage of the air cylinder and a seal gas ring is formed at a seal mouth so as to effectively prevent dust from entering into the air cylinder, and effectively prolong the service life of the air cylinder; and the drill pipe and a power head are connected by steep-lead threads, thereby greatly shortening the assembly and disassembly time and greatly enhancing the work efficiency.

The invention relates to a dragger for coiling a cable pipe. A dragging wheel of the dragger is mounted on an output shaft of a gear box; an adjusting belt wheel is mounted on a belt wheel adjustor; a fixed belt wheel, the gear box, an electric motor and the belt wheel adjustor are mounted on a frame; under the supporting of the fixed belt wheel and the adjusting belt wheel, a rear side of a synchronous belt is tightly clung to an outer edge of the dragging wheel; the dragging wheel is driven to rotate by the electric motor and the gear box, thereby driving the synchronous belt to rotate synchronously; and a groove is arranged on the outer edge of the dragging wheel. In the dragger, the rear side of the synchronous belt is attached to the outer edge of the dragging wheel and a tensile force of the synchronous belt is adjusted for clamping the cable pipe and synchronously rotating the cable pipe with the dragging wheel, thereby not only guaranteeing a dragging force and a stable linear velocity of the cable pipe but also being simple in mechanism, high in efficiency and small in power consumption.

The invention discloses a combined wire winding unit for cable processing. The combined wire winding unit comprises a cable winding machine main body and a base, the base is arranged on one side of the driving end of the cable winding machine main body, a positioning and clamping mechanism is arranged on the base, one end of the positioning and clamping mechanism is connected with the driving end of the cable winding machine main body, an auxiliary guiding mechanism is arranged on one side of the positioning and clamping mechanism, and a traction wire supply mechanism is arranged on one side of the auxiliary guiding mechanism.According to the combined wire winding unit cable winding machine, the positioning and clamping mechanism is arranged on one side of the output end of the cable winding machine main body and can be used for clamping and positioning cable reels of different sizes, the auxiliary guiding mechanism is arranged on one side of the positioning and clamping mechanism and can move the cable in a reciprocating mode, so that winding stability and uniformity are improved, the traction wire supply mechanism is arranged on one side of the auxiliary guiding mechanism, traction force on the cable in the winding process is kept through the traction wire supply mechanism, the winding operation efficiency is improved, the structure is simple, and the stability is high.

The invention relates to a hydrostatic type travel driving device (1) of an all-wheel drive working machine. The working machine is provided with a first drive axle (2) and a second drive axle (4). A travel driving device body used for driving the first drive axle (2) comprises a first hydraulic motor (8) connected with a first gear shifting transmission (11). A travel driving device body used for driving the second drive axle (4) comprises a second hydraulic motor (17) connected with a second gear shifting transmission (19). All-wheel drive can be stopped or started through gear shifting of the second gear shifting transmission (19). The hydrostatic type travel driving device aims at achieving gear shifting of the gear shifting transmission on the first drive axle and start-stop of all-wheel drive of the second drive axle in the mode that traction force is not interrupted in the traveling process. The gear shifting process, used for starting or stopping all-wheel drive, of the second gear shifting transmission (19) and the gear shifting process of the first gear shifting transmission (11) are not carried out at the same time, so that the second gear shifting transmission (19) transmits traction force in the gear shifting process of the first gear shifting transmission (11). In order to stop all-wheel drive in the traveling process, the second gear shifting transmission (19) is converted to be with no load. In order to start all-wheel drive in the traveling process, electrical and hydraulic synchronization of the rotating speed of the second hydraulic motor (17) is achieved.

The invention discloses a cable pipeline threading traction apparatus. The cable pipeline threading traction apparatus comprises a circular table base; a motor room is arranged in the circular table base; multiple driving motors are arranged in the motor room; a rolling wheel is fixed on a motor rotary shaft; the rolling wheel is connected with a driving rotary shaft through a belt; supporting springs are arranged between a supporting plate and the circular table base; driving wheels are fixed at the two ends of the driving rotary shaft; multiple suction cup brackets are fixed on the surfacesof the driving wheels; a cable fixing plate is arranged on the inner side of the motor room; a wire tray bearing is mounted between the cable fixing plate and the motor room; multiple cable holes areformed in the cable fixing plate; buckle fixing blocks are arranged on the two sides of the circular holes of the cable holes; cable buckles are arranged on the inner sides of the buckle fixing blocks; multiple lithium battery panels are mounted on the back surface of the circular table base; the lithium battery panels are electrically connected with a control box through power lines; and a relay,a rotary knob switch and a charging port are arranged in the control box. The cable pipeline threading traction apparatus, driven by the motors, can complete threading of multiple cables at the sametime.

The invention provides a scraper conveyer and a fully-mechanized coal mining device. The scraper conveyer comprises at least two middle troughs, and the outer side of a shoveling plate ledge of each middle trough is provided with pin rails used for being matched with traveling gear teeth of a coal mining machine. Each pin rail comprises pin teeth and a pin tooth base located between the corresponding pin teeth and the corresponding shoveling plate ledge. The opposite end faces of the corresponding pin tooth bases of two adjacent middle troughs make contact with each other, and a rotation center is provided for relative rotation between two adjacent middle troughs through the end faces, making contact with each other, of the corresponding pin tooth base. The scraper conveyer can effectively improve the situation that the meshing pitch of the pin teeth of two adjacent middle troughs changes greatly, and the service life of the pin rails and the service life of the traveling gear teeth of the coal mining machine are prolonged.

The invention relates to a loader hydraulic system and a loader, and belongs to the technical field of engineering machinery. The loader hydraulic system comprises a hydraulic oil tank, a duplex gearpump, a third hydraulic pump, a working hydraulic cylinder and a steering hydraulic cylinder, wherein the duplex gear pump comprises a first hydraulic pump and a second hydraulic pump; the first hydraulic pump, the second hydraulic pump and the third hydraulic pump all communicate with the hydraulic oil tank; the steering hydraulic cylinder is connected with a steering gear; the third hydraulic pump is connected with the working hydraulic cylinder through a multi-way valve; a priority valve is connected with the multi-way valve; and a priority unloading valve is connected between the duplex gear pump and the priority valve. The loader hydraulic system and the loader overcome the defects in the prior art, prevent heavy low-rotating-speed and idling of an engine and excessive energy loss, guarantee the power of the engine and the operation efficiency of the whole machine, reduce the complexity of the hydraulic system, and are more convenient to manufacture, maintain and repair.

The invention relates to the technical field of minimally invasive surgery equipment for breast tumors, and specifically discloses a negative-pressure biopsy sampler used for minimally invasive surgery for breast tumors. The negative-pressure biopsy sampler used for the minimally invasive surgery for the breast tumors comprises a sampling tube, a sampling blade, a rotating shaft, a screw, a nut, anut driving rod, a first spring, a connecting elbow, a negative pressure cylinder, a piston and a second spring; a sampling chamber is arranged at the lower end of the sampling tube; the rotating shaft is rotatably mounted on the sampling tube, and is coaxial with the sampling chamber; the sampling blade is located inside the sampling chamber; the nut cooperates with the screw; the nut driving rod is connected with the sampling tube in a vertically slidable way, and is fixedly connected with the nut; the first spring is arranged between the nut driving rod and the sampling tube; the samplingtube is fixedly connected with the negative pressure cylinder via the connecting elbow; the piston is mounted inside the negative pressure cylinder; and the second spring is arranged between the piston and the negative pressure cylinder. By using the negative-pressure biopsy sampler used for the minimally invasive surgery for the breast tumors disclosed by the invention, one-hand operation by medical staffs is realized; moreover, the sampling blade rotates inside the sampling tube, so that, no additional damage is caused on organs and tissues of patients.

The invention discloses an orthopedic clinical traction frame. The traction frame comprises a bottom plate, a groove plate is arranged at the upper end of the bottom plate, sliding grooves on the twosides of a groove of the groove plate are slidably connected with sliding strips on the two sides of a telescopic plate, adjusting bolts are arranged in rear side threaded holes on the rear side of the groove plate, and the bottoms of the adjusting bolts are in threaded connection with the threaded holes which are uniformly distributed on the rear side of the telescopic plate. The orthopedic clinical traction frame has the advantages that the structure is simple, the production cost is lower, the installing and using are convenient, great convenience is brought for the use of medical workers,the rapid stretching traction on a traction part can be achieved through a traction device, rapid clamping fixing on a traction column of the traction part is achieved through a clamping fixing device, proper regular traction auxiliary treatment on the traction part of a patient is achieved under the real-time pulling force monitoring of a pulling force sensor and the traction timing of a timer, the working intensity of the medical workers is relieved, the traction and treatment quality is ensured, and the using efficiency of the traction frame is improved.

The invention discloses an elevator fire fighting system. An elevator car arranged in an elevator shaft is supported by a support device; a car roller is mounted at the bottom of the elevator car, and drives the support device to ascend or descend the elevator car; an elevator shaft wall of the elevator shaft is provided with an opening in a reverse second floor; the opening is closed by a reverse second elevator shaft door; a gap is formed between the closed reverse second elevator shaft door and a reverse second floor baseplate; a fire extinguishing device is mounted on the reverse second floor, and sprays fire extinguishing water to gather on the reverse second floor baseplate and flows to the top of the elevator car in the elevator shaft from the gap so as to finally gather at the bottom of the elevator shaft; a protective component is arranged at the top edge of the elevator car, and surrounds the outer periphery of the support device; a cross bar is arranged at the top of the elevator car; and the protective component is butted against the cross bar. The protective component is adopted to prevent the fire extinguishing water from being sprayed on the support device.

The invention discloses a tea tray device for automatically pouring tea, including a support table, a teapot, a water injection system which is arranged on one side of the support table, a transmission module, and a control terminal electrically connected with the transmission module. A first hook part is arranged at the first eccentric position of the bottom of the teapot, and the plane of the teapot's handle is regarded as the symmetry plane, a first outlet is arranged on the side of the teapot symmetrical to the first eccentric position. The transmission module comprises a drive mechanism electrically connected with the control terminal and a transmission part for transmitting the teapot. The portion of the transmission part, where the teapot is put, is provided with a groove, and an elastic element is fixed in the groove. When tea is poured at the first outlet, the elastic element is connected with the first hook part. The tea tray device for automatically pouring tea has the functions of automatic tea making and automatic pouring of tea water, and is capable of adjusting tea water temperature according to different types of tea.

The invention discloses a fracture preventing industrial cable. The fracture preventing industrial cable comprises a cable body, wherein the cable body comprises multiple conductors, an insulation layer, a shielding layer and an outer sheath; the multiple conductors are arranged inside the cable body; cable core protection layers wrap the conductors; the cable core protection layers and the conductors form a cable core jointly; the insulation layer is extruded outside the cable core; a filling layer is arranged at the gap between the insulation layer and the cable core; the shielding layer is extruded outside the insulation layer; a reinforcing braid layer and an inner sheath are sequentially extruded outside the shielding layer from inside to outside; the outer sheath is tightly extruded outside the inner sheath. The fracture preventing industrial cable has the advantages that the structural design is reasonable, the stretch resistance effect is good, and the service life is long.

The invention discloses a device for removing attachments in the sailing process and the berthing anchorage ground of a ship and a use method of the device. The device comprises a high-pressure pump set, a controller, a cavitation jet rotary jetting device and a flexible magnetic adsorption-compensation magnetic adsorption underwater wall-climbing robot. The rotary jetting device is installed on the flexible magnetic adsorption-compensation magnetic adsorption underwater wall-climbing robot and comprises cavitation nozzles. Pump water outlets of the high-pressure pump set are connected with nozzles through water pipes. The high-pressure pump set, the rotary jetting device and the flexible magnetic adsorption-compensation magnetic adsorption underwater wall-climbing robot are connected withthe controller, so that the technical purpose that the ship surface attachments are removed and cleaned underwater in the sailing process of the ship is achieved.

The invention discloses an assembly type skin retractor and belongs to surgical operating instruments. The assembly type skin retractor comprises an arc handle and a plurality of retractors connected with the handle, wherein a slide groove is arranged on the handle from bottom to top from the lower surface of the handle, two positioning strips are arranged on two lateral walls in the slide groove along the arc surface direction, and a plurality of clamping openings are arranged on the upper surfaces of the positioning strips. Positioning blocks sliding on the positioning strips are arranged at the upper ends of the retractors, and positioning protrusions capable of being clamped in the clamping openings are arranged on the two sides of the lower ends of the positioning blocks. The assembly type skin retractor is novel and flexible in structural design. The retractors with corresponding quantity can be installed according to patient needs and operation situations, burden of assistants is reduced, and only one assistant is needed. Additionally, optimal traction force is ensured, constant tension is kept, quick and continuous operations can be ensured, and possibility of complication is reduced.

The invention discloses a preparation method of Qimen black tea cakes. According to the method, through optimization and improvement on a series of working procedures of selecting tea leaves, removingtea stems, performing later-stage re-steaming, selecting compression moulding molds and the like, the problem that after conventional black tea cakes are processed, the tea cakes are poor in lustrousness and easy to come off is solved, and besides, the problems that conventional tea cakes are low in surface compacting degree, internal antioxidant ability of the tea cakes is poor and the quality guarantee period of the conventional tea cakes is short are also solved. The black tea cakes obtained by the method disclosed by the invention are high in surface smoothness and good in brightness, sothat pressed patterns are high in identification degree, products are long in quality guarantee period, and the method can be widely applied to the field of processing of the black tea cakes.

The invention relates to a preparation device for preparing an anticorrosive coating on the outer surface of a pipeline. The preparation device comprises a bottom frame which is used for being movably assembled on a track extending in the axial direction of the pipeline in a guiding mode. The bottom frame is provided with a cloth roll installing rack used for installing a cloth roll and further provided with a paint spraying mechanism. The paint spraying mechanism comprises a primer spraying mechanism body used for spraying primer on the peripheral surface of the rotating pipeline and / or an outer-layer paint spraying mechanism body used for spraying outer-layer paint on a cloth belt wound on the peripheral surface of the pipeline. Primer spraying, cloth belt winding and outer-layer paint spraying can be achieved at the same time, the efficiency is high, and too much manual intervention is not needed, so that the labor intensity is relieved; and meanwhile, the rotating pipeline and the movable bottom frame are matched with each other, accordingly, the paint spraying thickness and the cloth belt winding thickness can be accurately controlled, and the uniformity and the quality of the prepared anticorrosive coating can be effectively improved.