70results about How to "Not easy to close" patented technology

The invention relates to a method for removing aluminum alloy laser welding air holes. The method solves the problem that air hole defects are easily generated in the laser welding and laser-TIG hybrid welding process of aluminum alloy. The method comprises the steps that in the bifocal laser-TIG hybrid welding process of the aluminum alloy, namely, in the aluminum alloy welding process, two beams of lasers (LB1 and LB2) and a TIG electric arc are adopted to jointly act on a welded area, a welding joint bears the combined action of the three heat sources at the same time, and the action modes of the two lasers can be divided into three kinds which comprise a serial distribution mode in the welding direction, a parallel distribution mode perpendicular to the direction of the welding joint and a crossing distribution mode between the serial distribution mode and the parallel distribution mode. According to the welding method, the air hole rate is zero, and air hole defects of the aluminum alloy laser welding are overcome. The method is applied to the field of aluminum alloy laser welding.

The invention relates to laser welding and discloses a process method for welding aluminum and aluminum alloy material by laser. The process method comprises steps of: (1) selecting an Nd:YAG laser with high beam quality and high energy density; (2) adopting double-beam laser to weld aluminum and aluminum alloy material, wherein the distance between the two beams is 0.6-1.0 mm, and the energy ratio of the two beams is larger than 1:1; (3) surface treatment of a material to be welded: removing greasy dirt and dust with an organic solvent and removing an oxidation film by mechanical cleaning and / or chemical cleaning; and (4) utilizing the two-beam laser to weld the aluminum and the aluminum alloy material. A needle body, a sleeve and a lead of the invention are manufactured into a whole; therefore, the invention solves adaptability of the laser welding to assembly precision, enhances the stability of welding process and improves welding line quality.

The invention relates to a fracturing technology using propping agent density variation for obtaining large channels. The fracturing technology includes the following steps that propping agent fracturing fluid low in density, intermediate in density and high in density is prepared, and fibers are added into the propping agent fracturing fluid intermediate in density to form propping agent clusters serving as the premise of channel fracturing; at the beginning of fracturing, prepad fluid is pumped into the stratum so that the stratum can form a crack of a certain width and a certain length, and the propping agent fracturing fluid of the three densities is together pumped into the stratum; because no fibers are added into low-density propping agent particles and high-density propping agent particles, the low-density propping agent particles and the high-density propping agent particles can freely float and precipitate at the top and the upper portion of the crack; the propping agent fracturing fluid intermediate in density is injected in a pulse mode, and the channels of a certain size can be formed between the propping agent clusters. The large channels of larger sizes are formed between an intermediate-density propping agent zone and a low-density propping agent zone as well as between the intermediate-density propping agent zone and a high-density propping agent zone.

The invention discloses a method used for determining shale formation brittleness index. The method comprises following steps: comprehensive fracture toughness is determined based on forming situations of shale formation in geological zones; the maximum fracture toughness and the minimum fracture toughness of each single kind mineral shale formation are determined; and the shale formation brittleness index is obtained based on the comprehensive fracture toughness, and the maximum fracture toughness and the minimum fracture toughness of each single kind mineral shale formation. According to the method, influences of minerals are taken into consideration, and initiation toughness of each mineral is taken into consideration, so that the obtained shale formation brittleness index is more accurate.

The invention relates to a high-flux ceramic flat sheet membrane and a preparation method thereof. The high-flux ceramic flat sheet membrane comprises a ceramic flat sheet membrane supporting body and a separation membrane layer wrapping the outer surface of the ceramic flat sheet membrane supporting body. The ceramic flat sheet membrane support body is prepared from the following raw materials in parts by mass: 40-57 parts of diatomite, 30-40 parts of alpha-alumina powder, 4-12 parts of a pore forming agent, 20-40 parts of a support body binding agent, 8-12 parts of a lubricant, 9-13 parts of a plasticizer and 12-18 parts of chopped fibers. The separation membrane layer is prepared from the following raw materials in parts by mass: 40-43 parts of ceramic powder particles, 4-6 parts of ethanol, 19-40 parts of a separation membrane layer binding agent and 9-12 parts of polyethylene glycol. The high-flux ceramic flat sheet membrane product is low in sintering temperature, low in production cost, high in product porosity, small in filtering resistance and high in water flux.

The invention is concerned with a kind of sugarless gel soft candy and its produce method. It relates to gelatin, food grade Pullulan, sorbitol, maltitol, isomaltitol, Erythritol, sour material, flavoring essence, natural edible pigment and water. Mix gelatin and Pullulan to get liquid of glue, dissolve sorbitol, maltitol, isomaltitol and Erythritol to get sirup, and mix the liquid of glue and sirup to get mixed material liquid. Add sour material, flavoring essence and natural edible pigment into the mixed material liquid, pour, mold and dry till with 12 to 20 percent of water to get the production. The added stuffs have good effect to agglomerate with good elasticity for the compound using of gelatin and Pullulan. The production is not easy to becoming into the crystal for using sorbitol, maltitol and isomaltitol. This invention has great importance for the new production technology field for sugarless gel soft candy.

The invention provides a method and system for controlling the switching-on threshold value and the switching-off threshold value of a brake vacuum pump. The method comprises an information acquiring step and a threshold value setting step. According to the information acquiring step, at least the current vehicle speed information and brake information are acquired. According to the threshold setting step, the switching-on threshold value and the switching-off threshold value of the vacuum pump are set respectively at least according to the speed of a vehicle and the magnitude of brake signals through the current vehicle speed information and the brake information, and the working time of the vacuum pump is reduced under the premise that the braking safety is guaranteed. According to the method and system, the switching-on threshold value and the switching-off threshold value of the vacuum pump can be set according to the current vehicle speed information and the brake information, so that the various working conditions of the vehicle in the traveling process are fully considered; under the premise that the brake safety is absolutely guaranteed, the working time of the vacuum pump can be reduced to the greatest extent, the probability of breakdowns due to long-time working of the vacuum pump is lowered, and the service life of the vacuum pump is effectively prolonged.

The invention relates to an anti-vibration type alarm fingerprint encryption burglarproof notebook computer, which comprises a computer machine body, a power supply and a fingerprint recognition module. The notebook computer is characterized in that the computer machine body is provided with a motion inductor, an alarming circuit and a speaker; the motion inductor is connected with the alarming circuit; the alarming circuit is connected with the speaker; the fingerprint recognition module is connected with the alarming circuit and also connected with a CPU of the notebook computer; and the power supply provides power for the CPU and the motion inductor. The alarming device is arranged inside the computer machine body of the notebook computer and has good concealing effect; the notebook computer adopts vibration and induction for alarming, has high real time of alarming; the notebook computer utilizes fingerprint to relieve alarm and has high safety coefficient; a battery adopts an anti-dismantlement device; and the alarming function is uneasy to close because of power-off and cannot lose effectiveness because of power-off or system reinstallation.

The invention relates to a plug-in card fingerprint identification anti-theft laptop, which comprises a machine body of the laptop and a power supply. The anti-theft laptop is characterized by further comprising a motion inductor, a fingerprint identification module, a fingerprint identification reader-writer, a fingerprint identification card, an alarming circuit and a loudspeaker, wherein the power supply is connected with the motion inductor; the power supply is connected with the fingerprint identification module; the alarming circuit is connected with the motion inductor, the fingerprint identification module and the loudspeaker; the fingerprint identification reader-writer is connected with the fingerprint identification module; and the fingerprint identification card reads and writes information through the fingerprint identification reader-writer. An alarming system of the anti-theft laptop has small volume and can be arranged in the laptop without influencing integral appearance; the anti-theft laptop adopts vibration induction alarming to have high alarming real time, and removes alarming by utilizing fingerprints to have high safety factors; a battery adopts an anti-demolition device, the alarming function is not easy to turn off due to power down; and the alarming function does not lose efficacy due to power down or system reinstallation.

The invention relates to a washing machine cover opening and closing structure and a washing machine. The cover opening and closing structure comprises a cover, a base and a hinge device, the hinge device comprises a fixing part and a rotating part, the fixing part is installed on the base, the rotating part is installed on the cover, the rotating part is rotatably arranged outside the fixing part in a sleeving mode, the periphery of the fixing part is provided with grooves / convex ribs in the axial direction, and the inner circumference of the rotating part is provided with convex ribs / grooves in the axial direction. When the cover is completely closed, the cover is in a stable clamping state, the cover can be opened by slightly exerting a person himself / herself, and the situation that when dehydration is conducted, the washing machine shakes to cause collision between the cover and the base to generate noise can be avoided. When the cover is completely opened, the cover is in a stable clamping mode, the cover cannot be closed easily, a user can pick and place clothes conveniently, and the situation that the cover is automatically closed to cause impact and collision to the base can be avoided.

The invention discloses a breeding method of tomato disease-resisting homozygotes. The method comprises a tissue culture and identification step and a disease-resisting screening step, wherein tissueculture comprises the following steps: preparing a specific culture medium formula based on a conventional culture medium formula by replacing sucrose with trehalose and adding nutrient components oflycium ruthenicum juice filtrate and preparing an explant, carrying out callus induced culture on anther, carrying out callus culture, obtaining a complete plant, treating with colchicine and carryingout ploidy determination to obtain homozygote seedlings; combining a molecular marking technology to carry out disease-resisting molecular marker screening, so as to obtain disease-resisting homozygote plants. According to the method disclosed by the invention, a screening period can be remarkably shortened and the tomato disease-resisting homozygotes are rapidly obtained; moreover, the method issimple to operate and low in cost; after anther culture seedlings are transplanted, the survival rate is high and the stress resistance is strong; the method is easy to popularize, can be directly applied to production and has relatively good economical benefits and social benefits.

The invention discloses an oil-gas drilling production increasing combined operation device and method. The device comprises a high-pressure pump, high-pressure coiled tubing and a downhole drilling tool combination, wherein the downhole drilling tool combination comprises a drill bit and a downhole cutting nipple; the drill bit is connected with the high-pressure coiled tubing, and a rock breaking nozzle and a thrust nozzle are formed in the front end and the rear end of the drill bit correspondingly; the downhole cutting nipple comprises a shell and a valve body; the valve body is provided with an axial hydraulic channel and a radial hydraulic channel; a jet flow channel is formed in the shell and provided with a radial jet flow nozzle; a drilling water channel is further formed in the shell; and the axial hydraulic channel communicates with the rock breaking nozzle of the drill bit. When the valve body moves in the shell to enable the axial hydraulic channel to communicate with the drilling water channel, the radial hydraulic channel does not communicate with the jet flow channel; and when the radial hydraulic channel communicates with the jet flow channel, the axial hydraulic channel do not communicate with the drilling water channel. Compared with an existing oil-gas exploitation technology, the oil-gas drilling production increasing combined operation device and the method have the advantages that (1) operation efficiency is high; (2) the production increasing effect is good; (3) reservoir adaptability is wide; and (4) the environmental influence is less.

A theft-protective notebook computer comprises a computer body, a power supply and a fingerprint recognition module. The theft-protective notebook computer is characterized in that the computer body is provided with a motion sensor, an alarming circuit and a loudspeaker, wherein the motion sensor is connected with the alarming circuit that is connected with the loudspeaker; the fingerprint recognition module is connected with the alarming circuit and is also connected with a CPU of the notebook computer; and the power supply supplies power for the motion sensor. The alarming device is arrangedin the notebook computer body and has good hiding effect; as vibration sensing is adopted for alarm, the alarm real-time performance is high; as the alarm can be released by the fingerprint, the safety coefficient is high; as a battery adopts a tamper device, the alarm function is not easy to be closed due to power-off; and the alarm function does not fail due to power-off or system re-installation.

The invention discloses a digital intelligent light-controlled antitheft mobile phone, which comprises a mobile phone body and a battery. The digital intelligent light-controlled antitheft mobile phone also comprises a light-controlled switch, a magnetic switch and an alarm circuit. Password check software is arranged in a system storage of the mobile phone. The light-controlled switch is connected with the alarm circuit which is connected with the magnetic switch. Through the digital intelligent light-controlled antitheft mobile phone, a user can find that the mobile phone is lost at the first time. The mobile phone adopts the light-controlled technology and has stable work. The password authentication function prevents the alarm function of the mobile phone from being closed easily. The magnetic switch is adopted to prevent the battery from being disassembled and the alarm function from being closed. Due to the anti-theft mode of combining the hardware with the software, the digital intelligent light-controlled antitheft mobile phone has the advantages of simple structure, low cost, convenient installation, simple operation and high safety performance, and is easier to use than current antitheft products in the market. Therefore, the digital intelligent light-controlled antitheft mobile phone has strong popularization.

The invention discloses a cultivation method of chili disease-resistant homozygote. The method includes steps: culturing and identifying tissue: utilizing a conventional culture medium, using trehalose to replace sucrose, adding lycium ruthenicum juice filtrate nutritional ingredients to prepare a specific culture medium formula, and performing explant selection, explant treatment, anther culture,complete plant acquisition, colchicine treatment and ploidy identification on chili to obtain homozygote seedlings; utilizing molecular marker technology for virus disease resistant molecular markerscreening to obtain virus disease resistant homozygote plants. The method can remarkably shorten screening period and quickly acquire the chili disease-resistant homozygote, is simple to operate, lowin cost and easy for popularization, can be directly applied in production and has good economic benefit and social benefit,, and anther cultured seedlings are high in survival rate and stress resistance after being transplanted.

The invention relates to a light-operated pure hardware circuit anti-theft mobile phone, which comprises a mobile phone body, a battery, a light-operated switch, a magnetic control switch and an alarm circuit, wherein the light-operated switch is connected with the alarm circuit, and the alarm circuit is connected with the magnetic control switch. The invention can find that the mobile phone is taken away from the body as soon as possible, adopts light control technology and works stably, a password authentication function protects the alarm function of the mobile phone against easy shutoff, and the magnetic control switch is used to protect the battery against disassembly and ensures that the alarm function can not be shut off.

The invention discloses a stoma system, which comprises a handle, a sheathing canal component and an electrode support, wherein the electrode support is contained in the far end of the sheathing canal component and establishes a flow division channel for tissues on the stoma through an expansion and ablation function; the handle comprises a conveying device and a diameter regulation device, wherein the diameter regulation device comprises a diameter regulation structure and a diameter regulation line; the diameter regulation structure is fixed with the near end of the diameter regulation line; the diameter regulation line is movably penetrated in the conveying device and the sheathing canal component; the far end of the diameter regulation line is wound to the electrode support; and the diameter regulation structure is used for driving the diameter regulation line to move along the axial direction so as to regulate the diameter of the electrode support released from the sheathing canal component. Through the diameter regulation structure, the axial displacement of the diameter regulation line wound to the electrode support is controlled and regulated to regulate the diameter of the electrode support released from the sheathing canal component, and the size of the flow division channel is regulated according to different patient requirements so as to be favorable for improving the efficiency of stoma surgery.

The invention relates to a washing machine cover body folding structure and a washing machine; the washing machine cover body folding structure comprises a cover body, a pedestal and a controller; a revolving shaft of the cover body is arranged on the pedestal; the controller comprises a slide groove and an elastic support member; the slide groove is arranged on the revolving shaft of the cover body in a revolving direction; the bottom of the elastic support member is arranged on the pedestal, and the top of the support member supports the inner side of the slide groove in a slide manner; a limit slot is arranged in the slide groove; the elastic support member slides into the limit slot so as to prevent the cover body from automatically closing after opening; when the cover body is fully closed, the cover body is in a stable clamping state, and a slightly bigger force is needed to open the cover body, thus preventing bumping noises, caused by washing machine vibrations in dehydration, between the cover body and the pedestal; when the cover is fully opened, the cover body is in a stable clamping state and cannot easily close, so users can easily take out clothes, and thus preventing impacts and bumping on the pedestal when the cover body is automatically closed.

The invention discloses a method suitable for reshaping and trimming of a thick-planting date garden. The row spacing is adjusted to 1-1.5 m and the line spacing is adjusted to 2.2-3.5 m by changing a planting mode. According to the method, multiple Chinese date heads are not used as a main branch system for expanding crowns, cyclic introduction secondary branches on the middle vertical date head are adopted as the main branch system for forming the crowns, and therefore the columnar crowns are formed. According to the method, the tree body is reasonable in structural layout, the tree body can be formed in two years and enters the fruiting period in three years, and the high-yield, stable-yield, high-quality and efficient cultivation effect can be achieved. The defects that according to a conventional date tree cultivation technology, a garden is slowly formed, fruiting is late, crown closure is caused easily, mechanical working is not easily performed, time and labor are wasted during management, and effectiveness is absent are overcome.

The invention belongs to the field of foundation pit supporting structures, and particularly discloses a deep and shallow pit combined supporting structure with a water resistance function. The deep and shallow pit combined supporting structure with the water resistance function comprises a shallow foundation pit structure and a deep foundation pit structure. The shallow foundation pit structure comprises a shallow foundation pit base and a foundation slab, wherein the shallow foundation pit base is horizontally arranged, and the foundation slab is arranged above the shallow foundation pit base. A water-blocking sunken pool is formed in the side, facing the foundation slab, of the shallow foundation pit base. The upper end of the deep foundation pit structure is connected with one end of the foundation slab and abuts against the side face of the shallow foundation pit base. The deep foundation pit structure comprises a diaphragm wall and a deep foundation pit side wall, wherein the diaphragm wall and the deep foundation pit side wall are vertically arranged. One side of the diaphragm wall is attached to the deep foundation pit side wall, the other side of the diaphragm wall is attached to the side face of the shallow foundation pit base, and a water-resisting blocking groove is formed in the side, attached to the deep foundation pit side wall, of the diaphragm wall. The invention further provides a construction method corresponding to the deep and shallow pit combined supporting structure with the water resistance function. The deep and shallow pit combined supporting structure with the water resistance function and the construction method guarantee the foundation pit safety and the durability of structural engineering, and have the advantages of being convenient and fast to construct, economical, practical, high in water resistance and seepage resistance and the like.

The invention discloses a health-caring argy wormwood leaf cake processing method, which belongs to the technical field of food processing. The method comprises the following steps: S1) processing argy wormwood leaves; S2) preparing a stuffing material; S3) making a dough; S4) wrapping the stuffing material in the dough; S5) steaming and boiling the dough; and S6) cooling the product. The health-caring argy wormwood leaf cake comprises the following raw materials in parts by weight: 40-50 parts of sweet rice flour, 5-10 parts of rice flour, 20-25 parts of argy wormwood leaf, 28-35 parts of white granulated sugar, 7-8 parts of sesame, 7-8 parts of peanut, 0.5-1 part of rock candy powder, and 0.01-0.015 parts of Neodiosmin. The processing method can effectively remove bitter taste of the argy wormwood leaf, and can greatly keep the active ingredients and fragrance of the argy wormwood leaf, the prepared health-caring argy wormwood leaf cake has good health-caring effect, soft and stickytastes are moderate, and the mouthfeel of the argy wormwood leaf cakes can be greatly improved.

The invention provides an exhaust system and a fermenting barrel, and belongs to the field of a fermenting device. The exhaust system comprises a mounting plate and a switch assembly, wherein a through hole is formed in the mounting plate, and the through hole communicates two surfaces of the mounting plate; the switch assembly comprises an exhaust pipe and a baffle plate, an exhaust end of the exhaust pipe is connected to the mounting plate and communicated with the through hole; an air inlet end of the exhaust pipe is connected to the baffle plate, and the baffle plate is connected with the exhaust pipe in a rotating manner, when the mounting plate rotates around a shaft parallel to the central line of the mounting plate, the baffle plate is switched between the opening state and the closing state. The fermenting barrel comprises a barrel body and an exhaust system. The exhaust system is simple in structure and ingenious in design, the opening and closing operation of the baffle plate are flexible, the exhaust system is unlikely to block by materials in the fermenting process, and the exhaust process is smooth.

The invention relates to the technical field of propping agents for fracturing in the oilfield development process, in particular to a pressure-resistant quartz sand propping agent for fracturing anda production method thereof; the pressure-resistant quartz sand propping agent for fracturing comprises: sodium silicate, epoxy resin, sodium hydroxide, urotropine, ammonium chloride, calcium stearateand washed quartz sand. The invention solves the problem that conventional quartz sand cannot resist pressure, the production method is simple, the quartz sand has a good anti-crushing effect, and the technical performance of the quartz sand can meet the technical requirements of a fracturing process. The fracture rate of the water separation quartz sand is increased to be smaller than or equal to 9% from 16%, that means the compressive strength of the obtained pressure-resistant quartz sand propping agent for fracturing is increased, cracks are not prone to closing, the permeability is high,oil gas is prone to flowing, more oil gas is produced, the crack flow conductivity can be effectively improved, and the fracturing effect is good. Therefore, the fracturing oil extraction effect is improved.

The invention relates to the technical field of medical equipment, in particular to a hole cutting type non-implanted atrial shunt device. The device comprises an outer tube and an inner tube arrangedin the outer tube, wherein the end part of one of the outer tube and the inner tube is connected with an ablation assembly; the other end of the other of the outer tube and the inner tube is connected with an anastomosis assembly; the ablation assembly is connected with a radio frequency ablation instrument; and when the inner tube and / or the outer tube are / is moved, and the ablation assembly andthe anastomosis assembly move oppositely to cut an atrial septum located between the ablation assembly and the anastomosis assembly. A hole is formed in a radio frequency mode by using the ablation assembly and the anastomosis assembly, and the formed hole is not prone to being closed again and allows left atrial blood pressure to be effectively guided to the right atrium, so the purpose of treatment is achieved.

The invention discloses a pruning machine, wherein a steel wire shaft (7), an upright rod (12), a switch top block (13), a main button (2), a lifting plate (8) and an inching switch (6) are arranged at the left of a motor component (5), a draw plate (10) and a sub button (4) are arranged at the right of the motor component (5), two ends of the steel wire shaft (7) are respectively connected with the right end of the main button (2) and the left end of the lifting plate (8), a rigid metal rod (9) is connected between the right end of the lifting plate (8) and the upper end of the draw plate (10), the lower ends of the draw plate (10) and the sub button (3) are hinged with a shell (11), the lifting plate (8) is sliding sheathed on the upright rod (12) sheathed by the switch top block (13), and the inching switch (6) is above the switch top block (13). The invention has the advantages that the invention can turn on and off motor with small force and can prevent thermal deformation of driving mediums caused by the heat radiation of motor.

The invention discloses a remote switch type inductive theft-proof portable computer, which comprises a computer body and a power supply and is characterized by also comprising a sensor, a voltage comparator, a phase reverser and an alarm module, wherein the sensor is connected with the voltage comparator; the voltage comparator is also connected with the phase reverser; the phase reverser is also connected with the alarm module; and the power supply is connected with the voltage comparator, the phase reverser and the alarm module respectively. The invention adopts the technical scheme that only an alarm circuit, the sensor, a remote control component and a loudspeaker are arranged in the portable computer; the loudspeaker also can be a built-in sound box of a public laptop, so the loudspeaker has smaller volume, can be well arranged inside the laptop, does not influence the aesthetic degree of the laptop, and has good concealment effect; the alarm real-time property is high by adopting vibration induction alarm; the safety factor is high by using a remote switch to get rid of alarm; and because a battery adopts an anti-dismantling device, the alarm function is not closed due to power down.

The invention discloses a medical three-blade retractor. The medical three-blade retractor comprises a handle portion and a supporting portion. The handle portion comprises a left handle and a right handle. A supporting strip is arranged on the left handle. Sawteeth are arranged on one side of the supporting strip. A clamping hole matched with the sawteeth is formed in the right handle. The supporting portion comprises a left arc supporting portion and a right arc supporting portion. The end portion of the left arc supporting portion and the end portion of the right arc supporting portion are respectively provided with an annular fulcrum. According to the medial three-blade retractor, the supporting strip is arranged on the left handle, the sawteeth are arranged on one side of the supporting strip, the clamping hole matched with the sawteeth is formed in the right handle, and therefore the retractor is not prone to closure when being pulled open. The supporting portion comprises the left arc supporting portion and the right arc supporting portion, the end portion of the left arc supporting portion and the end portion of the right arc supporting portion are respectively provided with one annular fulcrum, so that supporting is firm, slipping is not prone to occurrence, and the success rate of an operation is improved.

A percussion attachment is provided to be detachably installed on a percussion instrument. The percussion instrument comprises a plurality of tension bolts applying a tension to a head part through a hoop . The percussion attachment includes a main body part having a struck part to be struck by a player, an extended part extending from a side surface of the main body part to be locked to one of the tension bolts, and a restricting part protruding from the side surface of the main body part near the extended part and supporting the percussion instrument to restrict a displacement of the main body part in a state that the extended part is tightened together with the hoop by one of the tension bolts.

The invention relates to the technical field of shaping pruning in fruit tree cultivation, in particular to a cultivation method for main branches of spindle-shaped apple trees. The method comprises the following specific steps that in the germination stage, main branches with the length larger than 70 cm is subjected to ring girdling multiple times; in the growth period of young sprouts, when thelength of branches on the main branches reaches 3-5 cm, the main branches are subjected to branch pulling and angle opening; when the length of the branches on the main branches reaches 10-15 cm, sprout torsion is conducted. According to the cultivation method for the main branches, multi-time ring girdling is matched with branch pulling and angle opening and sprout torsion in specific time, a large number of medium and short branches which are even in distribution, moderate and robust can be formed on the main branches, formation of long branches or super-long branches is reduced, early yield, high yield and stable yield of the apple spindle-shaped trees can be achieved, and the growth vigour of the main branches in the next year and in the later period is controlled. The cultivation method is easy to implement and control and saves labor and time.