45results about How to "Reasonable angle" patented technology

The invention provides a mechanical property parameter detection device of an in-vitro cornea. The mechanical property parameter detection device comprises an installation platform and a controller, wherein a cornea fixation mechanism, deformation quantity acquisition mechanisms and a deformation drive mechanism are arranged on the installation platform, each deformation quantity acquisition mechanism comprises a distance sensor and at least two high-speed cameras, an installation frame is vertically arranged on the installation platform, and each high-speed camera is provided with a rotation drive mechanism; the location plate of the distance sensor is further provided with a slide drive mechanism, and an angle adjustment mechanism; the cornea fixation mechanism comprises an accommodating cabin and a clamping mechanism, and the clamping mechanism comprises a lamination panel, a clamping unit and a drive unit. The mechanical property parameter detection device provided by the invention has the following beneficial effects that the number and the positions of the deformation quantity acquisition mechanisms are reasonably arranged, thus facilitating post-processing; the distance of the distance sensor relative to the accommodating cabin is randomly adjustable, and the height of the distance sensor is adjustable, thus guaranteeing alignment with the central position of the accommodating cabin; the angles of the high-speed cameras are adjustable, thus improving the detection accuracy.

An all-pass mode overpass without intersection points and conflict points can facilitate driving with high speed. It is a full-fresh design proposal of overpass which breaks conventionality and traditional custom. Taking world acknowledged physical conservation law as the principle, an overpass with more smart conception, more unique model, more natural connection, more entire function, more clear simpleness, more rational fluency and capability of resolving all difficulties in transportation is designed. The overpass has small area, low cost, on conflict points, no intersection points and can reduce traffic accidents, protect lives, save energy sources and time, initiate separated driving of automobiles and non-automobiles, close history of left turning vehicles turning right firstly, has clear direction of turn-around line which is clear at a glance for both new and old drivers. It integrates many merits in the smallest diameter and changes the structure thoroughly.

The present invention discloses an MDOF (multi-degree-of-freedom) micro-lubrication intelligent spray head system for a CNC milling machine, comprising an annular rotating platform, a longitudinal telescopic part, a rotating part, an intelligent spray head mounting platform and an information acquisition system. The annular rotating platform comprises a rotating piece which rotates along a horizontal circumferential direction; a bottom of the rotating piece is connected with at least one longitudinal telescopic part; a lower end of the longitudinal telescopic part is connected with the rotating part; the rotating part rotates within a set angle range by taking a point connected with the longitudinal telescopic part as an axis; the intelligent spray head mounting platform is connected with the rotating part and moves along with the rotating part; and the information acquisition system is mounted on the intelligent spray head mounting platform.

The invention discloses a thrombus-taking bracket equipped with barbs in silk screen crossed positions, and belongs to the technical field of interventional therapy. The thrombus-taking bracket comprises a mesh cage formed by a nickel-titanium tube by laser cutting through high-temperature shaping, wherein the mesh cage comprises a plurality of elastic filaments, wherein the elastic wires intersect each other to form a plurality of intersection end surfaces; each of the intersection end surfaces is provided with a barb unit which extends towards the inner side of the inner mesh cage; each barbunit has a root portion which extends from one side, close to the distal end, of the intersection end surface portion; and the barb unit has an inclined rod which extends away from the root portion and obliquely extended in the distal direction. The thrombus-taking bracket has the advantages that the contact area between the thrombus-taking bracket and a thrombus can be more reasonably increased,and thrombus slipping is avoided; and in addition, a welded developing ring or a developing block is additionally arranged at the tail end of each barb unit, so that the positioning and developing effect of the bracket in a body can be enhanced.

The present invention provides forced oxidizing method and apparatus for calcium sulfite as the intermediate produce of desulfurizing fume. There are gypsum slurry pond in the bottom of the absorbing tower for desulfurizing reaction and storing slurry, oxidizing air generator outside the slurry pond and connected to two or three air spraying guns around the absorbing tower; air spraying guns inserted obliquely into the gypsum slurry to blow air into the slurry pond, and side stirrers between each of the air spraying gun outlets and the pond wall. The present invention has the advantages of simple and reasonable technological arrangement, low power consumption, full forced oxidation, etc.

The invention relates to a back-suspended root collector, which comprises frame, movable blade, and ground wheel. Wherein, the movable blade is driven by blade arm to move front and back; the blade arm is vertical to the horizontal plane; the angle between movable blade and the horizontal surface is 9-13degree; the back upper end of movable blade is fixed with soil guide plate; the angle alpha between soil guide plate and movable blade is 27-33degree; the frame at the back upper end of soil guide plate has at least two fruit-soil separating rollers inclined from low to high, while the angle between them and horizontal plane is 15-35degree. The invention can break soil, guide soil and separate fruit from soil when moving.

The invention provides a desert photovoltaic power station system, which includes photovoltaic panels for absorbing solar radiation. The photovoltaic panels are arranged on a support plate. The support plate is connected to a base through a support rod and an angle rotating shaft. It also includes a photovoltaic panel for centralized management. The centralized processor of the desert photovoltaic power station system is used to measure the measurement module of light intensity. Due to the heavy wind and sand in the desert area and the harsh weather conditions, it is easy to cause the accumulation of a large amount of dust on the surface of the photovoltaic components, affecting the power generation efficiency of the photovoltaic panels. According to the present invention A cleaning module is also set up to solve the problem of dust accumulation affecting power generation efficiency. The invention adjusts the angle between the photovoltaic panel and the base and adds a cleaning module, which effectively solves the problem of low sunlight absorption efficiency and poor photovoltaic conversion efficiency caused by dust blocking the photovoltaic panel.

The invention discloses an intelligent hydraulic road barricade system, and relates to a road barricade system, which is suitable for protection of important places such as military and civilian institutions, bastions, ammunition depots, oil depots, warehouses and the like. The system comprises a control cabinet, a driving box, a road barricade part, a hydraulic part, a cross bar road barricade part and an anti-freezing, heating, deicing and draining part, wherein the control cabinet is arranged on one side or in the middle of the intelligent hydraulic road barricade system and installed on the road surface; the hydraulic part and a driving hydraulic cylinder for a cross bar barricade are arranged in the control cabinet; the driving box is arranged below the control cabinet and positioned under the road surface; the driving box is connected with one end of a box body of the road barricade part by bolts; two driving hydraulic cylinders of the road barricade part are arranged in the driving box so as to provide power for lifting or dropping the road barricade; and the road barricade part comprises a main box body, an end plate, a bearing, a driving shaft, a left clamping plate, a right clamping plate, a barricade bar, a reinforcing rib, a barricade tip, a supporting frame, a padding plate and a panel.

The invention provides a half-round head rivet comprising a half-round head cap. A draw bar is arranged below the half-round head cap, the front end of the draw bar has guide taper of 30 degrees, an R circular arc is arranged at the joint between the half-round head cap and the draw bar, and the size of the R of the R circular arc is 0.3-0.4mm. The half-round head rivet has the advantages that the guide taper plays a role in guiding during assembly; stress concentration is avoided; the half-round head rivet is attractive and capable of preventing a sharp workpiece edge from scratching people, and rivet edge positions cannot collide to cause mutual damage during use; the guide taper of 30 degrees guarantees proper draw force of the draw bar, and a guide angle is most reasonable; connecting strength between the half-round head cap and the draw bar is guaranteed by the aid of the R circular arc, stress concentration is further avoided, buffering effect is achieved, and collision between the half-round head cap and a riveted component is eliminated; the half-round head rivet is simple in structure, economical and practical and solves the problems of inconvenience and damage to people and components during assembly.

The invention discloses an engine camshaft for a gerontic motor tricycle. A connecting line of a center O of an air inlet cam (2) and a starting point A of a cam contour is on a first straight line L1; a connecting line of the center O of the air inlet cam (2) and an end point B of the cam contour is on a second straight line L2; a connecting line of the center O of the air inlet cam (2) and the outmost edge point C of a flange of the air inlet cam (2) are on a third straight line L3; an inclined angle a which is more than or equal to 92 DEG and is less than or equal to 98 DEG is formed between the first straight line L1 and the third straight line L3; an inclined angle b which is more than or equal to 86 DEG and is less than or equal to 92 DEG is formed between the second straight line L2 and the third straight line L3; and lift data of an exhaust cam is completely the same as that of the air inlet cam, and only the direction of the exhaust cam is opposite to that of the air inlet cam. In the invention, an inclined angle and a lift curve (the cam contour) of a distribution cam is changed, so that the conventional horizontal type engine can meet the using requirements of large medium-low-speed torque, a low temperature, low oil consumption, low noise, high reliability, high durability and the like of the gerontic motor tricycle.

The invention discloses a 1WG3 type micro-cultivating blade set, belonging to a part of a micro-cultivating machine. The 1WG3 type micro-cultivating blade set overcomes the defects of large cutting resistance and large tool wear in the working process of a common micro-cultivating blade. The 1WG3 type micro-cultivating blade set mainly comprises micro-cultivating blades, a first micro-cultivating tool rest side plate, a second micro-cultivating tool rest side plate, and a micro-cultivating tool rest hexagonal square tube, wherein the first micro-cultivating tool rest side plate and the second micro-cultivating tool rest side plate are both welded on appointed positions of the micro-cultivating tool rest hexagonal square tube, and the micro-cultivating blades are chained on the micro-cultivating tool rest side plates through bolts. The 1WG3 type micro-cultivating blade set is mainly used for a rotary cultivating part of a micro-cultivator.

The invention discloses a reducing drilling rig, which comprises a drilling rig pipe body, a spiral cutting wing consisting of a wing piece and a first cutting pick, and a front end drill bit consisting of a front end seat plate and a second cutting pick; the spiral cutting wing is arranged at the outer wall of the pipe body of the drilling rig in a radiating form; the wing piece is a spiral pieceof which upper part is conical and the lower part is cylindrical; the outside diameter of the conical free end at the lower part is risen along its rotation direction and gradually increased in the conical form; every first cutting pick is fixedly connected to the free end at the outside of the wing piece, two adjacent first cutting picks are arranged equally at the arc face of the free end of the wing piece and outwards expanded; several first cutting picks are risen at 360 degrees around the rotation direction of the wing piece and then arranged at intervals along the arc face of the outside free end of the wing piece; the front end drill bit is fixed on the outer end face of the drilling rig pipe body through a front end seat plate, two lines of second cutting picks are outwards inclined to fix at the lower side of the front end seat plate. The reducing drilling rig is featured by high intensity of cutting bit, wide adaptation scale, wear-resistance and reliability, and can realizemultilayered cutting and drilling, and effectively improve the drilling and rock breaking ability and construction working efficiency.

The invention relates to the technical field of superfine ceramic cellucotton, and in particular, relates to superfine ceramic cellucotton and a production method thereof; the superfine ceramic cellucotton is prepared from fly ash, coal gangue waste, an old aluminum silicate thermal insulation material and kaolin through the steps of heating melting, conveying, centrifuging, blowing and the like;the prepared superfine ceramic cellucotton has the advantages of being low in production cost and more uniform in forming thickness.

The invention discloses a thrombectomy stent with barbs for enhancing capture force. The thrombectomy stent comprises a mesh cage formed by an elastic wire mesh in a curly shape; the elastic wire meshcomprises a plurality of elastic wires; the elastic wires intersect with one another to form a plurality of grid units; the formed grid units include a plurality of 8-shaped grid units; an inward circuitous part is arranged in the middle of each of two sides of each 8-shaped grid unit in the width direction; the inward circuitous part of at least one 8-shaped grid unit extends to form an extension wire; the two extension wires are intersected to form a capture unit; and the tail end of the capture unit can be provided with a developing point / developing block by welding. The invention aims toprovide the thrombectomy stent with the barbs for enhancing the capture force, which is used for more reasonably enhancing the capture effect on thrombus, and can enhance the supporting strength for preventing the mesh cage from prematurely collapsing and deforming due to bending force.

The invention discloses a bicycle for aloft work. The bicycle comprises a main beam. The front side and the rear side of the main beam are correspondingly connected with a front supporting arm and a rear supporting arm. A foot stepping wheel disc is arranged at the joint of the main beam and the front supporting arm. A front hook is arranged at the upper end of the front supporting arm. A front idler wheel which is in chain transmission with the foot stepping wheel disc is arranged in the front hook. A safety handle is arranged in the middle of the front supporting arm. A rear hook is arranged at the upper end of the rear supporting arm. A driven rear idler wheel is arranged in the rear hook. The hook opening of the front hook is provided with a safety lock. The hook opening of the rear hook is provided with a safety lock. A hook body of the front hook is connected with an auxiliary brake device which comprises a connecting plate connected with the hook body, wherein a brake block is hinged to the connecting plate, the two sides of the brake block on the connecting plate are correspondingly provided with a first limiting block and a second limiting block, and a compression spring which keeps the brake block in the first position or the second position is connected between the middle of the brake block and the connecting plate. The bicycle has the advantages of being reasonable in structure, stable in riding and high in safety coefficient.

The invention relates to the technical field of electric power multi-directional erecting equipment, in particular to multi-angle adjustable electric power multi-directional erecting equipment which comprises a supporting structure, a fixing structure, a limiting structure, a height adjusting structure, an angle adjusting structure and a driving structure. The supporting structure is matched with the fixing structure, so that the supporting structure is fixed more firmly, the supporting structure can be conveniently fixed to a floor slab of a top floor, the stability is greatly improved, meanwhile, the fixing structure and the supporting structure of the fixing structure are more convenient to mount and dismount, and construction is safer; after cables are fixed, the height adjusting structure is driven by the driving structure, so that the limiting structure is lower than the fixing structure, the safety performance is greatly improved, and meanwhile, the normal use of the top floor is not influenced; and the cables can be separated and fixed conveniently through the limiting structure, and then the angle between the limiting structure and the height adjusting structure is adjusted through the angle adjusting structure, so that the supporting and guiding angle of the cables is more reasonable, and the supporting quality of the cables is improved.

The invention provides a tire conveying system, which relates to the technical field of sequenced tire conveyance of a tire assembly split charging line. The tire conveying system comprises a first platform, a conveying device, and a second platform, wherein the conveying device is connected with the output end of the first platform, the second platform is connected with the output end of the conveying device, one end, near the first platform, of the conveying device is lower than one end near the second platform, an included angle between the conveying device and the horizontal plane is 5 degrees, a plurality of lines of universal rolling balls are respectively distributed on the top surfaces of the first platform and the second platform, the second platform comprises a butt joint turning plate, the butt joint turning plate is hinged to the output end of the second platform, a manual operation room is arranged at one side of the output end of the second platform, and the conveying device is driven through a variable-frequency motor. The tire conveying system has the advantages that the conveying device is in inclined arrangement, the angle and the length are more reasonable, and the conveyance of tires is stable and safe.

The invention discloses an ankle training device which comprises: a base; the rotating shaft supporting part that forms a moving pair with the base, and / or the rotating shaft supporting part forms a rotating pair with the first end of the base; the swing guide rod mechanism that comprises a crank rotating shaft, a crank, a first sliding block, a first sliding rail and a pedal, wherein the first sliding rail is arranged on the back face of the pedal in the length direction of the pedal, the first sliding block is slidably installed in the first sliding rail, the first sliding block and one end of the crank form a rotating pair, the crank rotating shaft is rotationally installed at the other end of the rotating shaft supporting component, the other end of the crank is fixedly connected with one end of the crank rotating shaft, and a rotating pair is formed between the base and the pedal; and the first adjusting mechanism that is arranged between the rotating shaft supporting component and the base. The invention can obviously activate human lower limb naked joint movement and promote blood flow, and has the characteristics that normal states of muscles and pulses are not interfered, the shape is adjustable to adapt to different requirements, and the invention conforms to human ankle joint movement rules.

The invention relates to the technical field of shot blasting machines, in particular to a shot blasting machine for rust removal of a steel member. A supporting mechanism for supporting a steel plate is arranged on the outer portion of a machine shell, the lower end of the machine shell is connected with a lower spiral conveyor in a penetrating manner, a shot blasting chamber and a cleaning chamber are arranged in the machine shell, a shot-ash separator is arranged in the shot blasting chamber, a shot blasting device is arranged below the shot-ash separator, and the shot-ash separator is connected with the shot blasting device through a steel shot conveying mechanism. A scraping plate scrapes off most of steel shots on the surface of the steel member, a rolling brush cleaning mechanism cleans away the steel shots remaining on the surface of the steel member, a secondary cleaning mechanism cleans away dust on the surface of the steel member, and a high-pressure dust blowing mechanism blows off the dust on the surface of the steel member. By means of the shot blasting machine for rust removal of the steel member, the problem that after shot blasting, a large number of steel shots remain on the steel member is solved, shots and dust remaining on the surface of the steel member are thoroughly removed, and labor intensity and operation safety risks are reduced.

The invention discloses a high-yield method for hawthorn. The method comprises the following steps: (1) hawthorn tree pruning: planting hawthorn trees, removing top buds when the trees grow to 30-40 cm, after lateral buds of main trunks grow out, carrying out pruning on the main trunks for leaving three branches I, removing top buds when the branches I grow to 30-40 cm, after lateral buds of the branches I grow out, carrying out pruning for leaving three branches II, removing top buds when the branches II grow to 40-60 cm, and when lateral buds of the branches II grow out, leaving 5 lateral buds on each of the branches II; (2) fertilization, applying fertilization once in each quarter, and carrying out fertilization with different fertilizers in different quarters; (3) disease prevention and control: after the hawthorn trees bloom, carrying out pest control by using a chemical insecticide, and adopting a plant source insecticide for insect prevention one month before hawthorn fruits are ripe; and (4) flower promotion and fruit promotion. With the high-yield method for the hawthorn, the yield of the hawthorn can be improved, and the hawthorn is free of insect pests.

The invention relates to a dwarf stock Fuji apple sapling crawn-controlling, blossom-promoting and yield-increasing method. According to the method, 1-3 middle-short branches grow from each sapling branch and flower buds are formed by organically combining branch supporting and angle opening, continuous pinching and branch pulling and drooping according to growth and development characteristics and laws of Fuji apple sapling branches, uniaxial branch extending is avoided, crown extension is controlled, tree vigor is stabilized, the purposes of uniaxial extending of shoots, crown compactness, short branch growth promotion and early flowering and fruit bearing can be achieved, and the goals of flowering and fruit bearing within 2 year, yield increased within 3 years and high yield within 4-5 years are achieved.

The invention discloses a searchlight support for an unmanned aerial vehicle. The support comprises connection rods and a support body, the connection rods are installed on the periphery of the support body in a welding mode, and power devices are connected to the ends, away from the support body, of the connection rods; rotation shafts are connected to the upper center ends of the power devices,wings are connected to the two ends of each rotation shaft, and a landing rack is connected to the lower end of the support body through bolts; a bracket is connected to the portion, between the two landing racks, at the lower end of the support body. The unmanned aerial vehicle is combined with the searchlight support, the unmanned aerial vehicle carries a searchlight during flying, and accordingly the places needing illumination can be subjected to searchlighting; in this way, the searchlighting range can be wider, the adjustable support is installed below the unmanned aerial vehicle, searchlights different in type and size can be installed on the unmanned aerial vehicle through the adjustable support, the diversification of searchlight installation for the unmanned aerial vehicle is achieved, and the use performance of the searchlight support for the unmanned aerial vehicle is improved.

The invention relates to an angle cutter grinding modular fixture of a gear sharper cutter, which is characterized in that the angle cutter grinding modular fixture comprises a bottom base for being fixed on a tool grinding machine, the bottom base is connected with a cutter installing seat; at least one cutter clamping groove is arranged on the cutter installing seat; the cutter installing seat is provided with a rake which leads the cutter installing seat to intersect with a first vertical reference plane; the cutter clamping groove is provided with a tool cutting edge inclination angle which leads the cutter clamping groove to intersect with a second vertical reference plane; and the first vertical reference plane is vertical to the second vertical reference plane. The gear shaper cutter angle cutter grinding modular fixture is convenient to adjust and simple to operate and has precise rake and tool cutting edge inclination angle for cutter grinding of the gear shaper cutter, so as to be especially applicable for cutter grinding in mass.

The invention discloses a preparation method of nano silicon monoxide powder, which comprises the following steps of: continuously feeding silicon powder, spraying silicon dioxide powder, entering working medium gas and preparing the nano silicon monoxide powder in a closed cavity: feeding from a silicon powder feeding pipe of which the upper part is communicated with a silicon powder feeding device; silicon powder at the outlet of the silicon powder feeding pipe is evaporated in the evaporation chamber by crossed plasma arc moments generated by a plurality of plasma guns which are arranged on the circular top plate and are electrically communicated with water to obtain silicon steam; a plurality of silicon dioxide powder injection pipes of the reaction chamber inject silicon dioxide powder, working medium gas in a working medium gas inlet pipe enters the reaction chamber and can drive powder to rotate, and silicon dioxide powder and silicon powder formed by cooled silicon steam are cooled, react with each other and then are conveyed to a condensation chamber at the lower part to be further condensed and reacted; the nanometer silicon monoxide powder is formed. The method is high in production efficiency, and the prepared silicon monoxide powder is reasonable in particle size distribution, high in sphericity degree and good in dispersity.

The invention provides a mechanical property parameter detection device of an in-vitro cornea. The mechanical property parameter detection device comprises an installation platform and a controller, wherein a cornea fixation mechanism, deformation quantity acquisition mechanisms and a deformation drive mechanism are arranged on the installation platform, each deformation quantity acquisition mechanism comprises a distance sensor and at least two high-speed cameras, an installation frame is vertically arranged on the installation platform, and each high-speed camera is provided with a rotation drive mechanism; the location plate of the distance sensor is further provided with a slide drive mechanism, and an angle adjustment mechanism; the cornea fixation mechanism comprises an accommodating cabin and a clamping mechanism, and the clamping mechanism comprises a lamination panel, a clamping unit and a drive unit. The mechanical property parameter detection device provided by the invention has the following beneficial effects that the number and the positions of the deformation quantity acquisition mechanisms are reasonably arranged, thus facilitating post-processing; the distance of the distance sensor relative to the accommodating cabin is randomly adjustable, and the height of the distance sensor is adjustable, thus guaranteeing alignment with the central position of the accommodating cabin; the angles of the high-speed cameras are adjustable, thus improving the detection accuracy.

The invention relates to a main shaft impeller head for a drum-type shot blasting machine and shot blasting equipment. Belongs to the technical field of impeller heads. The main shaft impeller head comprises a main shaft component, the main shaft component is arranged in a roller of a shot blasting machine, the main shaft component comprises a shot distributing pipe, a directional pipe and a shot blasting rotor which are coaxially arranged, one end of the shot distributing pipe is rotationally connected with the first end face of the roller of the shot blasting machine, and the other end of the shot distributing pipe is embedded in the first end of the directional pipe; the shot distributing pipe can rotate around the axis of the shot distributing pipe, the second end of the directional pipe is rotationally arranged on the second end face of the shot blasting machine roller, a plurality of first openings are formed in the outer wall face of the part, nested in the directional pipe, of the shot distributing pipe in the circumferential direction, a second opening is formed in the outer wall face of the directional pipe, and the shot blasting rotor is installed on the shot distributing pipe. And the shot blasting rotor comprises shot blasting blades, and when the shot distributing pipe rotates, shot blasting in the shot distributing pipe can sequentially pass through the first opening and the second opening and collides with the shot blasting blades to be thrown into a roller of the shot blasting machine.

The invention relates to a cutting tool for machining a fin of an automobile radiator. The cutter comprises a cutter shaft and a plurality of blade units arranged in the axial direction of the cuttershaft, wherein each blade unit comprises a left rotary cutter, a right rotary cutter, a folding piece arranged between the left rotary cutter and the right rotary cutter and an interval piece arrangedat the other end of the left rotary cutter and the other end of the right rotary cutter, and each of the left rotary cutter and the right rotary cutter comprises a plurality of saw-shaped cutter teeth which are arranged in order. According to the cutting tool for machining the fin of the automobile radiator, compared with the prior art, due to the fact that the cutting edge length, the thickness,the angle and the blade arrangement of the saw-shaped cutter teeth is changed, the window opening length and angle of the fin are changed, the wind resistance of the radiator is reduced, the coolingefficiency of the fin is improved, and thus the heat dissipation performance of the radiator is improved.

An opening operation sleeve angle deflection coordination assembly for a pipe shed drilling rig includes a machine body (1). A horizontal reference module (2), a triangular fixed point module (3), anangle sensing module (4) and a management module (5) are disposed on the machine body (1). During operation, the horizontal reference module (2) is arranged near an opening part of the machine body, the triangular fixed point module (3) is fixed on a sleeve, the angle sensing module (4) senses the conditions of an angle formed by each point and a reference line, and the management module (5) processes integrated information. An information sensing module (6) is arranged on the horizontal reference module (2), and the conditions of the angle formed between each point and the reference line aretransmitted in real time; and the angle sensing module (4) is provided with an angle setting module (7). During the setting of the opening operation, the angle range is reasonable; and the managementmodule (5) is provided with a prompt module (8). The sleeve angle in the opening operation process is controlled to be reasonable, so that the operation is smooth.