951results about How to "Increase carrying capacity" patented technology

The invention relates to an reimaging optical system that has a sufficiently enhanced magnification and better performance, and an endoscope using the same. The reimaging optical system 3 is adapted to re-form an image by an image guide 6 on a solid-state imaging device 4 having a diagonal length of 6.5 mm or longer, and satisfies the following condition.0.6<(D×|β|) / V  (1).Here D is the diameter of the image guide 6, β is the optical transverse magnification of the reimaging optical system 3, and V in mm is the minor axis direction length of an imaging area of the solid-state imaging device 4.

The invention provides an automatic storing and extracting system capable of achieving high-density storage of articles. The automatic storing and extracting system comprises a frame, storing drawers, laneway trolleys, transport baskets, storing and extracting windows and transfer platforms. The frame is provided with a great number of drawer positions for holding the storing drawers, each laneway trolley is provided with an extracting device and transport basket positions, and the storing drawers are taken out of the frame or returned to the frame through the extracting devices. The transport baskets are movably arranged at the transport basket positions, a first clamping mechanism is arranged on each laneway trolley, and the first clamping mechanisms are used for completing exchange between the articles in the storing drawers on the extracting devices and the articles in the transport baskets at the transport basket positions. Each transfer platform is provided with a second clamping mechanism, and the second clamping mechanisms are used for completing article exchange between the transport baskets and the storing and extracting windows. Compared with the prior art, the automatic storing and extracting system has the advantages that the storage amount of the articles is increased, the laneway quantity is decreased, power mechanisms in the system are reduced, spatial span of middle transport mechanisms is decreased and system efficiency is improved.

The invention discloses a deep sea bionic pressureproof shell. An axial-symmetry eggshell-shaped structure with the length of L, the width of B and the turning radius of R(x) is formed by a left end socket, a right end socket and a middle shell, wherein the thickness t2 of the middle shell is of an equal-strength variable-thickness structure, the thickness t1 of the left end socket and the thickness t3 of the right end socket are respectively of an equal-thickness structure, the left end socket and the middle shell are fixedly connected, and the right end socket and the middle shell are connected by a flange bolt or a movable hatch cover with a seal ring. The deep sea bionic pressureproof shell has good mechanical properties, in-shell space utilization rate, hydrodynamic characteristics and passenger comfort, and comprehensive improvement on safety, carrying capacity, mobility and diving time of a diving device is facilitated; meanwhile, the weight of the pressureproof shell is lightened, the reserve buoyancy of the pressureproof shell is increased, and the processing and manufacturing difficulty and cost are reduced.

The invention relates to the technical field of taxi reservation order push methods, in particular to an order push system based on urban taxi reservation order time and location combination. The order push system comprises a judgment module and a push module. The judgment module is used for calculating combinable orders of a taxi reservation order set according to the taxis reservation order set. The push module is used for pushing information of the combinable orders calculated by the judgment module to matched taxies. The information of taxi reservation orders is counted in real time, and the orders with correlative starting place, destination, starting time and arrival time are packed to send to drivers, so that waiting time of the drivers is saved effectively, the difficulty in calling a taxi in remote regions is overcome, deadhead of the drivers is reduced greatly, transport capacity is utilized effectively, and carrying capacity of traffics is improved.

The invention relates to a long steel rail transport vehicle set capable of rapidly unloading steel rails, which is characterized by comprising an unloading operation vehicle, wherein the unloading operation vehicle is provided with a steel rail unloading device; the steel rail unloading device comprises a winding device for pulling and unloading the steel rails and a pusher for pushing the steelrails; tracks are controlled by a guiding device, a tracking device and a lifting rail door at the time of unloading the steel rails; and the winding device, the pusher, the guiding device, the tracking device, the lifting rail door are fixed on the unloading operation vehicle body in sequence along with the running direction. The long steel rail transport vehicle set is formed by grouping six types of vehicles which are successively hung in serials, namely an unloading operation vehicle, a rail transporting heading vehicle, front rail transporting vehicles, a locking vehicle I, a locking vehicle II, rear rail transporting vehicles, and a rail transporting tail vehicle, wherein the number of the front rail transporting vehicles and the rear rail transporting vehicles depends on length of the transported steel rails. The long steel rail transport vehicle set has the advantages of large carrying capacity, simple structure, safety and reliability, high working efficiency of transporting and unloading the steel rails, and lower transportation cost.

The invention discloses a blocking remover for hypotonic inhomogeneous sandstone reservoir and a using method of the blocking remover. The blocking remover comprises an agent A, an agent B and an agent C, wherein the agent A consists of the following components in percentage by weight: 10%-25% of oxidant, 8%-12% of activator and the balance of water; the agent B consists of 10%-15% of a reducing agent, 0.3%-1.2% of a foaming agent, 0.3%-0.6% of a foam stabilizer, and the balance of water; the agent C consists of 8%-12% of HCL, 6%-10% of organic acid, 2%-5% of NH4HF2, 0.5%-1.5% of a corrosion inhibitor, 0.5%-1.5% of an iron ion stabilizer and the balance of water. The using method comprises the steps of step one, preparing the agent A, the agent B and the agent C; and step two, injecting the agent A into a ground layer by a pipeline, then injecting the agent B into the ground layer, and finally injecting the agent C into the ground layer. The blocking remover disclosed by the invention has beneficial effects that the blocking remover disclosed by the invention can be applied to decompression and augmented injection of a water injecting well and deep unblocking of an oil well; and the blocking remover has better effect while being applied to augmented injection of the water well in a reservoir non-homogeneous oil-field block.

The invention provides a tilting four-rotor-wing aircraft, comprising a body, main tilting rotor wings, auxiliary tilting rotor wings, an end-piece, main wings and auxiliary wings, wherein the end-piece is mounted at the tail part of the body; two main wings are mounted at the two sides of the body, respectively; two auxiliary wings are mounted at the two sides of the end-piece, respectively; each main tilting rotor wing is mounted at one end, far away from the body, of each main wing; each auxiliary tilting rotor wing is mounted at one end, far away from the end-piece, of each auxiliary wing; the main tilting rotor wings and the auxiliary tilting rotor wings are capable of rotating in the axial direction of the wings; the end-piece is capable of rotating in the axial direction of the body. The carrying capability of an existing tilting rotor wing aircraft is improved; the controllability of the aircraft at the take-off and landing stages is improved; the safety performance of flying is improved; the internal carrying space of the aircraft is expanded; the forward flight performance of the aircraft is improved; a control vane surface is omitted, so that the structure is light and simple (simplified).

An electric power steering device is configured to transmit an auxiliary torque to a steering unit of front wheels, and includes: a steering wheel (operator); an electric motor configured to generate the auxiliary torque in accordance with at least a steering torque generated by input from the operator; the steering unit of front wheels which includes a pinion shaft; and a rotation terminating mechanism which provides a motion terminating end of the operator, the rotation terminating mechanism being disposed between the steering wheel and the pinion shaft.

The invention discloses an automatic water surface garbage cleaning device which comprises a ship body, wherein the left side of the ship body is fixedly connected with a U-shaped plate; a support isfixedly arranged on the left side in the ship body; a conveyor belt is arranged on the left upper side of the ship body; the conveyor belt is inclined to the right upper side; a roller on the left lower side of the conveyor belt is rotationally connected with the U-shaped plate by virtue of a rotating shaft; a roller on the right upper side of the conveyor belt is rotationally connected with the support by virtue of the rotating shaft; the roller on the right upper side of the conveyor belt is driven by a drive motor; the drive motor is fixedly arranged on the rear side of the support; a plurality of rubber plates are uniformly and fixedly connected to the outer side of the conveyor belt; a water removal tank is fixedly arranged in the ship body by virtue of a supporting rod and positionedon the right lower side of the conveyor belt; and a screen is arranged in the water removal tank and inclined to the right lower side. According to the automatic water surface garbage cleaning devicedisclosed by the invention, the conveyor belt is driven to operate by the drive motor so as to drive the rubber plates to operate, garbage floating on the water surface is upwards transported into the ship body and does not need to be manually salvaged, the garbage cleaning efficiency is improved, and physical power and labor force can be saved.

A drive device (1A) provided with electric motors (2A, 2B) for outputting driving power and also with planetary gear type reduction gears (12A, 12B) arranged between axles (10A, 10B) connected to circular tube shafts (16A, 16B) serving as the output shafts of the electric motors (2A, 2B) and to rear wheels (LWr, RWr). The drive device (1A) is also provided with a unidirectional power transmitting means provided in a transmission route from the electric motors (2A, 2B) to the axles (10A, 10B) and transmitting the unidirectional rotational power of the electric motors (2A, 2B) to the axles (10A, 10B) and with a bidirectional power transmitting means for transmitting the bidirectional rotational power of the electric motors (2A, 2B) to the axles (10A, 10B).

The invention relates to machinery manufacturing automation assembly lines, in particular to a motor manufacturing assembly line assisted by an industrial robot. A robot-assisting motor stator carrying system comprises a robot, a three-jaw finger, a delivering mechanism and jig bodies. The robot is fixedly connected to the delivering mechanism. The three-jaw finger is movably connected to the executing tail end of the robot. The jig bodies are fixedly connected to the delivering mechanism. The jig bodies are fixedly connected to a chain. The chain can perform long-distance delivery so that stators can be delivered far. The stators are fixedly connected to the jig bodies through flanks of threads of the stators, so that connecting is stable and stationary. The robot grasps the stators and enables the stators to get rid of threaded connection from the jig bodies. Then, the robot moves the stators to the needed position.

The invention relates to an electric connector for high-voltage electric equipment. The electric connector comprises a plug and a socket, wherein the plug comprises a plug body, at least two through holes are formed in the plug body in a penetrating mode, an inserting sleeve for being electrically connected with a contact pin of the socket is arranged in one end of one through hole, a conversion terminal for being electrically connected with a connection cable is arranged in the other end of the through hole, the plug body is of a turning structure, and the turning curvature of the through holes are equal to that of the plug body. The electric connector has the advantages of having drawing and bending resistance, high-loading capability, high voltage-resisting capability, excellent impact resistance, vibration capability and electromagnetic shielding performance of the existing connectors, being suitable for being installed in narrow inside spaces of electric automobiles, and meeting using requirements of installation in small-dimensional spaces and various wiring modes.

The invention relates to the technical field of textile printing and dying, in particular to a composite printing paste and a preparation method thereof. The raw material of the composite printing paste comprises the following components in percentage by weight: 1.45-1.55 percent of modified carboxymethylcellulose, 0.45-0.65 percent of dying resistant salt, 0.1-0.2 percent of sodium hexametaphosphate, 4-5 percent of sodium bicarbonate, 8-9 percent of urea, 5-6 percent of 909 thickening agent and the balance of water. The water is added at normal temperature to be uniformly stirred for later use. When used as active dye printing paste, the invention has high tinctorial yield, saves dye and is excellent novel composite printing paste.

The invention discloses a carbon fiber composite. The carbon fiber composite comprises a metal inner layer, a local reinforcement layer, a reinforcement layer and an outer protection layer in sequence, wherein the reinforcement layer is formed by preferably winding large-tow carbon fibers. The invention also discloses a preparation method of the carbon fiber composite. The invention further discloses a tank prepared from the carbon fiber composite. The tank can be used for carrying liquid, powder, gases, pulp and other substances. The carbon fiber composite and the tank have the beneficial effects that compared with the traditional metal tanks, the tank prepared from the carbon fiber composite is lightened by more than 50%; the carrying capacity of a tank car can be obviously improved, and fuel consumption and carbon dioxide emission can be reduced; and the tank has the double effects of increasing the operating profits and reducing the environmental pollution.

The invention discloses a wrist watch mobile phone. The wrist watch mobile phone comprises a wrist watch shell body. Wrist watch belts are arranged at the two sides of the wrist watch shell body, a single chip microcomputer MCU, a display module, a vibration module and a power source module are arranged inside the wrist watch shell body, and both the display module and the power source module are connected with the single chip microcomputer MCU. The wrist watch mobile phone further comprises a Bluetooth earphone which comprises an earphone body and a receiver, wherein a chargeable battery is arranged inside the earphone body, the receiver is arranged on the earphone body in a rotary mode, and a charging contact is further arranged on the earphone body. The side wall of the wrist watch shell body is provided with an earphone inserting groove, and a charging contact is further arranged on the bottom portion inside the earphone inserting groove. The earphone body is inserted into the earphone inserting groove in the wrist watch shell body, and the charging contact of the earphone body and the charging contact of the earphone inserting groove are contacted with each other. The wrist watch mobile phone has the advantages that convenience and portability of a wrist watch and a mobile phone can be greatly improved, integral charging design can conduct charging on a battery of a communicating device inside the wrist watch and the battery inside the Bluetooth earphone simultaneously, and at the same time, uniformity of voltages of the two batteries is kept.

The invention relates to the field of carrier rocket posture control systems, in particular to a hydrogen peroxide posture control system applied to a solid-liquid hybrid power carrier rocket. The system includes four pitching rolling posture control engines and two yawing posture control engines; the two yawing posture control engines are arranged in the positive and negative directions of a Z axis of the outer side of a rocket three-sublevel main engine separately; the first pitching rolling posture control engine is installed on the surface of the main engine, and a 40-degree included angleis formed between the first pitching rolling posture control engine and the negative direction of the Z axis; the fourth pitching rolling posture control engine is installed on the surface of the main engine, and a 40-degree included angle is formed between the fourth pitching rolling posture control engine and the positive direction of the Z axis; the other two pitching rolling posture control engines are installed symmetrically on the surface of the main engine relatively to an XZ plane. According to the scheme, six posture control engines are adopted as propelling force, the number of thrusters is small, invalid loads can be reduced to a great extent, and the conveying capability of the whole carrier rocket is improved. Meanwhile, the failure rate of the posture control system is decreased, and the stability and safety of the system are improved.

The invention provides a rapid trajectory optimization method of a rocket power lowering landing process, discloses a fuel optimal power lowering landing rapid trajectory planning method, and belongsto the field of rocket guidance. An implementation method includes the steps that dynamics modeling and dimensional normalization are conducted on power lowering flying, and a three-dimensional dimensionless dynamics equation is established; an independent variable of the dynamics equation is changed from the time to the height; by introducing constraints required for power lowering flying, an optimal control problem of fuel optimal power lowering landing is established; a nonlinear dynamics equation in the original optimal control problem is treated as a linear dynamics equation; a part of the nonlinearity is retained and transformed into a constraint, a non-convex constraint is convexified, and a convex optimal control problem is established; the convex optimal control problem is discretized at non-uniform discrete points by using a four-order Runge-Kutta method, and a second-order cone programming problem is established; and the second-order cone programming problem is solved iteratively until converging, and trajectory planning of power lowering landing flying can be achieved. According to the rapid trajectory optimization method, the advantage of high efficiency is achieved, and the safety and the reliability of landing of the rocket power lowering stage can be improved.

The invention discloses a wheel-tracked tandem type pipeline robot and belongs to the field of pipeline robots. The wheel-tracked tandem type pipeline robot comprises a top wall track-type structure and a spiral wheel type structure which are connected through a universal joint. The top wall track-type structure mainly comprises a walking mechanism and a diameter changing mechanism; the diameter changing mechanism adopts a ball screw nut pair adjusting mode; a screw is driven to rotate through a motor to drive a screw nut to move back and forth in the axis direction, thus, a connecting rod is driven to move, and the diameter changing purpose is achieved. The spiral wheel type structure mainly comprises a spiral walking mechanism and a diameter changing mechanism; the spiral walking mechanism is driven by a motor to enable a driving wheel to spirally move along the pipe wall; meanwhile, a robot body moves along the axis of a pipeline under the action of the circumferential friction force of a guide wheel; and the diameter changing mechanism adopts pressure rods and has a certain pipe diameter adaptive capacity meanwhile shock absorption is conducted. The wheel-tracked tandem type pipeline robot is high in obstacle crossing ability, wide in adaptive pipe diameter range and high in carrying ability, can be applied to pipelines with different pipe diameters, and can work in muddy and rough pipelines.

The invention provides a control system for automatic driving of a virtual coupling small-scale marshaled train set. The control system is characterized by comprising the virtual coupling small-scalemarshaled train set, a ground driving curve generation module and a train-ground communication module. The invention further provides a control method for the control system. The control method is characterized by comprising the following steps that: the head train of the coupling small-scale marshaled train set operates according to a manipulation control curve generated by the ground driving curve generation module; and each following train governed by the virtual coupling small-scale marshaled train set tracks the speed of the adjacent preceding trains to keep running at intervals. With thecontrol system and method adopted, the carrying capacity and efficiency of urban rail trains can be greatly improved, and meanwhile the flexibility of the operation organization of the urban rail trains can be improved.

The invention relates to a run-through type non-split-phase balanced power supply electrified railway traction system, belonging to the technical field of railway electric traction power supply. The system comprises traction transformators, all sections of traction networks and current equalizers, wherein, each section of traction power supply network is provided with an energy distribution regulating machine which mainly consists of a main controller, a driver, an electronic power switch bridgearm, a support capacitance arm, three electric current sensors, three voltage transducers and three reactors; A phase of the output end of each traction transformator is connected with the traction power supply network, B phase thereof is connected with the energy distribution regulating machines, and C phase thereof is connected with a steel rail; the main controller of each of the energy distribution regulating machine is connected with a control center. The invention has the advantages that split-phase power supply is changed into non-split-phase power supply, and great run-through of the traction contact network can be realized, so that safe, high speed and high-efficiency running of train can be guaranteed.

The invention provides a high-voltage power transmission line robot. The high-voltage power transmission line robot comprises flexible power wheels which are arranged in pairs and can move along powertransmission cables, power wheel supporting arms and a supporting seat, wherein one end of each power wheel supporting arm is connected with each flexible power wheel; walking arm flexible driving mechanisms are correspondingly arranged on the supporting seat; the other end of each power wheel supporting arm is connected with each walking arm flexible driving mechanism and is hinged on the supporting seat in a swinging state; and an actuator which can be replaced according to operation tasks is also arranged on the supporting seat. The high-voltage power transmission line robot is designed for divided conductors with voltage being higher than 500kv, is capable of ensuring that the flexible power wheels are tightly close to an inspection line during moving, can be adapted to complicated situations of the line, can be better applied to line hardware, has a function of easily lifting and hanging the line, and also naturally has a falling prevention function, is capable of avoiding crossing failure caused by leaving from the line when crossing over poles and towers; the reliability and the stability of a robot platform in use are improved; the inspection efficiency and the safety aregreatly improved; and the equipment reliability is high.

The invention provides a method for extracting propolis by simulative biological fluid bed supercritical CO2 fluid, which comprises that: bran (or rice bran and the like) taken as biomembrane carrier and original gum particles after physical treatment simulate a fluid bed in an extraction kettle to perform gridded filling, the supercritical CO2 fluid is used for extraction, and the lowest speed of a granular bed converting from a stationary state to fluidization is regulated by regulating temperature, pressure and flow rate of the fluid in the extraction process so as to reach the critical fluidization state; therefore, high-quality and high-yield propolis extract is obtained through a cyclic process of fluidization diffusion, dissolution and separation between granules and the fluid. The method improves the yield of the propolis extract, reduces the cost, and extracts nearly all terpene compounds and 40 to 50 percent of flavonoid compounds in the propolis at the same time; and products do not have organic solvent.

Belonging to the technical field of biomedical polymer materials, the invention discloses a beta-cyclodextrin based amphiphilic pH responsive star polymer and a preparation method thereof, a micelle system based thereon, a composite material and application thereof. The polymer has a structure shown as the formula (1) in the specification, wherein x=3-20, y=2-30, z=5-35, and n=2-10. The polymer can be reduced in situ to obtain nanogold with small particle size and good stability. The invention also provides a micelle system based on the polymer, the micelle system has strengthened entrapment ability to water-insoluble drugs, can efficiently load hydrophobic drugs, gold nanoparticles and other substances, realizes the combination of tumor imaging diagnosis and tumor chemotherapy, and improves the therapeutic efficiency of cancer. And the polymer is easy to control the proportion of each block, and can be applied to preparation of the water-insoluble drug loaded micelle system to satisfy the release requirements of different drugs.

The invention belongs to the technical field of preparation of biomedical high molecular polymer materials and discloses a cholesterol modified amphiphilic pH response pennicuius copolymer and a preparation method and a micelle system prepared based thereof. The copolymer has a structure shown in the formula I in the specification, wherein x is 10-36, y is 15-40 and z is 8-30. The copolymer is obtained by virtue of irregular copolymerization of a hydrophilic block hydroxyethyl methylacrylate, hydrophobic cholesterol and pH response block methacrylic acid N, N-diethyl aminoethyl combined with hydrophilic poly(ethylene glycol) methyl ether methacrylate. The copolymer is dissolved in a solvent to obtain a nanoscale micelle system, wherein the inner layer is a cholesterol modified hydrophobic chain segment, the middle layer is a pH response chain segment and the shell is a hydrophilic chain segment, so that the function of high entrapment performance, stable existence of a neutral condition and quick release in a weak acidic condition is achieved. By adjusting the proportions of the blocks in the polymer, the release rates of medicines can be regulated to satisfy the release requirements on different drugs.

The invention provides an Al-Mg-Sc-Zr aluminum alloy plate and a manufacturing method thereof, and relates to the Al-Mg-Sc-Zr aluminum alloy plate and the manufacturing method thereof. Traditional aluminium magnesium alloy is replaced by the novel aluminum alloy plate, so that the purposes of further reducing the dead-weight of aerospace crafts such as spacecrafts, missiles and satellites, improving the carrying capacity, increasing the useful load, and lowering the cost for launching are achieved. The Al-Mg-Sc-Zr aluminum alloy plate contains the following elements: Mg, Mn, Sc, Zr, Ti and Be. The manufacturing method comprises the steps of firstly, burdening; secondly, smelting; thirdly, casting; fourthly, homogenizing annealing; fifthly, hot rolling; sixthly, prestretching; seventhly, finished product saw cutting; and then the Al-Mg-Sc-Zr aluminum alloy plate is obtained. The Al-Mg-Sc-Zr aluminum alloy plate has the advantages that the normal-temperature and low-temperature mechanical property and the damage-resisting tolerance are higher, the welding performance and the corrosion resistance are excellent, and the high concentration hydrogen peroxide compatibility is better. The Al-Mg-Sc-Zr aluminum alloy plate is applicable to the manufacturing field of astronautic and aeronautic aluminum alloy plates.

The invention discloses a cold helium heating and pressurizing system and method for a rocket oxygen tank. The cold helium heating and pressurizing method for the rocket oxygen tank comprises the steps that a certain number of cold helium cylinders are placed in the liquid oxygen storage tank, helium in the cold helium cylinders enters a gas pillow of the liquid oxygen storage tank after passing through a filter, an electromagnetic valve, a pressure reduction device, a throttling ring and a heater, and then liquid oxygen is pressurized. The cold helium heating and pressurizing system and method for the rocket oxygen tank have the advantages that helium in the cold helium cylinders enters the gas pillow of the liquid oxygen storage tank after being filtered, decompressed and heated, so thatliquid oxygen is pressurized, and the requirement for the pressure at an inlet of an engine is met. Through reasonable design of the cold helium heating and pressurizing system, it is ensured that under the normal operating condition of the cold helium heating and pressurizing system, the self weight of the heating and pressurizing system can be reduced, meanwhile, the effective utilization rateof helium can be increased, the carrying capacity of a rocket is improved accordingly; and meanwhile, the heating and pressurizing system has high safety and reliability.

The invention provides a pH and Redox dual-response amphiphilic block copolymer as well as a preparation method and application thereof. The molecular formula of the copolymer provided by the invention is MPEG-Linker-PAE-ss-PLGA and the copolymer has a structure as shown in the formula I and can be prepared through the following steps of performing reaction to modify macromonomer methoxypolyethylene glycols (MPEG), thereby obtaining hydrophilic macromonomer (MPEG-Linker) with pH responsiveness; performing reaction to modify macromonomer polylactic acid-poly lactic-co-glycolic acid (PLGA) by use of disulfide bonds, thereby obtaining a hydrophobic macromonomer (PLGA-Cys) with Redox responsiveness; and performing michael addition reaction through a one-step method so as to obtain the copolymer. The copolymer provided by the invention can be used in systems for loading water-insoluble drug micelle, is capable of controlling slow release of loaded drugs in normal tissues, is low in release amount accumulated for a long time, and can be enriched and rapidly released in focus tissues, thereby improving the bioavailability and treatment effect of the medicaments.

The invention discloses a pH response type anti-tumor prodrug by using polyethylene glycol-b-poly-epsilon-caprolactone as a vector and a preparation method thereof. The preparation method of the pH response type anti-tumor prodrug comprises the following steps: using methoxypolyethylene glycol as an initiator, and triggering ring opening polymerization of alpha-site bromo-epsilon-caprolactone to obtain a polyethylene glycol-b-poly-alpha-bromo-epsilon-caprolactone amphipathic segmented copolymer; further enabling the obtained copolymer to take a thio-bromine click reaction with mercapto-functionalized antitumor drug molecules to obtain the pH response type anti-tumor prodrug. The pH response type anti-tumor prodrug has the amphipathic structure, can be assembled to form stable nanomicelles, and meanwhile is high in drug loading capacity, good in biodegradability and good in biocompatibility; particularly, the antitumor drug is connected with a polymer carrier through an acylhydrazone bond; the pH response type anti-tumor prodrug has the acid responsiveness, can be quickly released in the tumor microenvironment, and greatly improves the utilization efficiency of the antitumor drug; in addition, the preparation method of the prodrug is simple, mild in process conditions, free of introducing a high-toxicity catalyst in the preparation process, and low in toxic and side effects.