28results about How to "Reduce error" patented technology

The invention relates to the technical field of safety monitoring of deep foundation pit construction adjacent to railways, and particularly discloses a safety monitoring device and method for deep foundation pit construction adjacent to railways. The system comprises a supporting structure safety analysis module, a settlement risk analysis module, a train passing construction safety evaluation module, a geological level risk evaluation module, a displacement level risk evaluation module, a database and a construction process construction safety evaluation module. Whether the construction of the deep foundation pit is safe or not is analyzed from the two levels of the safety change condition of the deep foundation pit when a train passes and the safety change condition of the deep foundation pit in the long-term construction process, that is, the deep foundation pit risk is automatically monitored from the four levels of the foundation pit supporting structure, the rail settlement risk, the foundation pit geology and the foundation pit displacement; the method avoids neglecting the instant safety risk, helps to evaluate the instant influence on railway facilities, and can grasp the overall safety trend, thereby helping to adjust the construction strategy and maintenance measures in time.

The invention discloses a multi-beam sonar pile foundation scouring detection method. The method comprises the following steps that a multi-beam pile foundation three-dimensional point cloud to be subjected to scouring detection is read; pile foundation scouring pit point cloud is extracted from the multi-beam pile foundation three-dimensional point cloud; a clustering segmentation method is adopted, pile foundation scouring pit point clouds are grouped, a plurality of clusters are formed, and each cluster represents one piece of independent scouring pit data; based on the multiple clusters, the pile foundation scouring volume is calculated to serve as the basis of pile foundation scouring detection; according to the multi-beam sonar pile foundation scouring detection method, the scouring detection precision of the pile foundation is improved, and pile foundation scouring degree information with higher quality is provided for operation and maintenance work of an offshore wind power pile foundation.

A multifunctional lithium battery thermodynamic experiment device comprises a battery cell pressure container with a closed internal space. A battery weighing table, an electrolyte weighing table, a battery placing frame and a needling mechanism are arranged in the pressure container, the battery placing frame is arranged on the battery weighing table and is provided with a battery placing area capable of placing a plurality of battery cells to be detected, and the battery placing area is provided with a battery cell heating piece; a quartz glass groove arranged on the electrolyte weighing table is arranged below the battery placing area; the needling mechanism is arranged on the side surface of the battery placing rack; the needling mechanism comprises a hydraulic prop, a connecting rod and a needling head, the needling head faces the battery placing area and is connected with the output end of the hydraulic prop through the connecting rod, and a temperature thermocouple is arranged in the needling head. The experimental device provided by the utility model has the advantages of multiple purposes, flexible functions, diversified assembly, wide application range, reasonable structural design, compact spatial arrangement and simple test method operation.

The present invention relates to the field of non-standard automation technology, in particular to an end cap rotary cutting assembly system and method for an injection-molded bottle body, comprising an injection molding machine, an injection molding transfer mechanism, a conveying mechanism, a first positioning mechanism, a first clamping mechanism, a rotary cutting mechanism, a second positioning mechanism, a second clamping mechanism and an end cap assembly mechanism, wherein the injection molding machine is used for bottle body injection molding, the injection molding transfer mechanism comprises an injection molding material picking component and an injection molding conveying component, the injection molding material picking component is used for grabbing the injection-molded bottle body on the injection molding machine and placing it on the injection molding conveying component, the injection molding conveying component is used for conveying the bottle body toward the conveying mechanism, the conveying mechanism is used for bottle body conveying, the first positioning mechanism is used for positioning the bottle body on the conveying mechanism, the first clamping mechanism is used for clamping the positioned bottle body and conveying it toward the rotary cutting mechanism, and the rotary cutting mechanism is used for ring cutting at the port on the bottle body; the present invention realizes full-chain automated operation from injection molding to end cap assembly through integrated and automated design.

The invention belongs to the technical field of wafer bonding, and discloses a wafer alignment and bonding device, a wafer bonding method and a precision compensation method. The wafer aligning and bonding device comprises a base, a first bearing assembly, a second bearing assembly and a camera assembly, the first bearing assembly is used for bearing a first wafer and driving the first wafer to translate along an X axis, translate along a Y axis and rotate around a Z axis, so that the relative position of the first wafer is adjustable; the second bearing assembly is used for bearing a second wafer and driving the second wafer to translate along the Z axis so as to realize bonding of the second wafer and the first wafer; the camera assembly comprises a CCD camera, and the CCD camera is used for identifying the mark points on the first wafer and the second wafer respectively so as to assist the alignment of the first wafer and the second wafer. According to the wafer alignment and bonding device, alignment and bonding are designed at the same position, the movement stroke to the bonding position is omitted after alignment is completed, errors are reduced, and the bonding quality and the product yield are guaranteed.

The invention relates to the technical field of vibration monitoring devices, in particular to a monitoring device for collecting blasting vibration at any depth in a soil body, which comprises a fixed disc, a limiting groove is formed in the middle of the upper surface of the fixed disc, an assembly port is formed in the middle of the ground in the limiting groove, and a vibration monitor is clamped and mounted on the fixed disc through the inner surface of the limiting groove. A hollow drill rod is installed below the fixing disc, a protruding butt joint is arranged at one end of the drill rod, the drill rod is installed in the assembling opening in a spirally inserted mode through the butt joint and connected with the fixing disc, a butt joint opening matched with the butt joint is formed in the inner surface of the other end of the drill rod, and a separating and disengaging screw blade is fixedly installed on the outer surface of the drill rod. And a drill bit is mounted below the drill rod. According to the invention, the monitoring equipment can be sent into a specific soil body depth according to the position needing blasting monitoring, so that the vibration monitoring operation in the soil body is easier to carry out, the labor amount of monitoring personnel is reduced, and the vibration monitoring efficiency is improved.

The invention relates to the technical field of petrochemical engineering safety, in particular to a process technological operation risk management and control method and system, and the method comprises the steps: establishing an SDG model, grading nodes, determining the deviation, determining the risk, and carrying out the warning management and control. The system comprises a model building module, a node grading module, a deviation determining module, a risk determining module and a warning management and control module. The method has the effects of reducing the inaccuracy of manual judgment and improving the safety of technological operation in the petrochemical process.

The invention relates to the technical field of samplers, in particular to a manual adjusting sampler for ambient air detection, which comprises a base, a lantern ring movably sleeves the outer ring surface of the base, adjusting screws are movably mounted in the middles of four sides of the upper surface of the lantern ring through bearings, and a fixing ring is jointly movably mounted at the other ends of the adjusting screws. A fixing disc is fixedly arranged in the middle of the inner surface of the fixing ring, a microclimate sensor is fixedly installed on the upper surface of the fixing disc, a sampling point predictor is fixedly installed on the lower surface of the fixing disc, adjusting blocks are spirally and movably installed in the middles of the outer surfaces of the adjusting screws in a sleeving mode, and fixing frames are fixedly installed on the two sides of the lower surfaces of the adjusting blocks. And a sampling cylinder is clamped on the inner surface of the fixed frame. The sampler can be controlled to carry out targeted adjustment according to the distribution state of pollutants in air, so that the error of air sample collection is reduced, and the accuracy of an air detection result is guaranteed.

The utility model relates to the technical field of powdery material processing, and discloses a weighing device for powdery materials, which comprises a weighing device body, the top of the weighing device body is provided with a scale, and one side of the weighing device body is fixedly connected with two extension frames. According to the weighing device for the powdery material, a worker pulls a grip to drive a scraping plate so that a sliding block can move left and right on the surface of a sliding rod, the bottom of the scraping plate can be tightly attached to the top of a scale pan to move, and weighed powdery coating contained at the top of the scale pan is pushed and scraped to a collecting box; a worker can conveniently collect the powdery coating weighed at the top of the scale pan, the situation that the worker manually takes the weighed powdery coating to cause part of the powdery coating to remain on the surface of the scale pan is prevented, the residual waste caused by weighing the powdery coating by the worker is reduced, the residual error degree generated by weighing the powdery coating is reduced, and the working efficiency is improved. The weighing accuracy of the device on the powdery coating is improved, and workers can conveniently collect the weighed powdery coating.

The invention relates to the technical field of load detection, discloses a dynamic vehicle weighing system, and solves the problem of accurately extracting a tire contour parameter model from a shot tire image on the basis of measuring and calculating a vehicle load based on a visual image. According to the method, two fitted minimum enclosing rectangles are correspondingly generated on the basis of pixel points, measured by an image preprocessing unit, of the outer edge and the inner edge of a tire, the axis of the tire is positioned on the basis of the center coordinate point of the inner side rectangle, and the outer contour size of the tire and the deformation sinkage of the tire in contact with the ground are measured according to the cooperation of the center coordinate point and the outer side rectangle. And then the deformation sinkage and the model of the corresponding tire are substituted into a tire mechanical deformation parameter database, so that the load of a single tire is obtained, and the error degree between the measured value of the load of the single tire and the actual weighing value of the wagon balance is greatly reduced.

The utility model discloses a tunnel deformation monitoring system based on cloud analysis, which is characterized by comprising a total station, a sensor, a data acquisition unit, a cloud and a monitoring platform, and the total station and the sensor are both connected with the data acquisition unit; the data collector is connected with the cloud end, and the cloud end is connected with the monitoring platform; the total station and the sensor are used for collecting information and uploading the information to the data collector; the data collector is used for receiving information uploaded by the total station and the sensor and uploading the information to the cloud; the cloud is used for carrying out standardized processing, storage, analysis and scheduling on the information to obtain early warning information; the monitoring platform is used for displaying early warning information in real time. The problems that in the prior art, a tunnel deformation detection system often processes and resolves data and then uploads the data to the cloud, so that the data processing, storage and analysis efficiency is low, certain data loss and errors exist, and secondary processing reduces the detection accuracy are solved.

The present invention discloses a process for preparing an optical glass reconstructed motherboard. The motherboard manufactured by the present invention using embossing technology and glass lens reconstructing technology combines optical lenses, gaskets and shielding layers into one structure. Moreover, directly manufacturing optical lens motherboards using glass lenses can also reduce the error of lens shapes and increase the stability and uniformity of the optical lens motherboard performance; the process for preparing optical glass reconstructed motherboards of the present invention reduces the manufacturing cost, simplifies the manufacturing process, and the manufactured motherboards can be used to mass-produce high-precision optical modules.

The invention relates to the technical field of pharmaceutical and chemical rectifying tower energy consumption remote control, and particularly discloses a pharmaceutical and chemical rectifying tower energy consumption remote control system. The system comprises a tower kettle temperature conformity analysis module, a tower kettle reboiler temperature control module, a condensation temperature conformity analysis module, a tower top condenser temperature control module, a product energy consumption reasonability feedback module and a database. By analyzing the tower kettle temperature conformity, confirming the temperature of the tower kettle reboiler, analyzing the condensing temperature conformity, confirming the temperature of the tower top condenser, analyzing the product energy consumption reasonability corresponding to the target rectifying tower and feeding back, the accuracy of temperature regulation of the tower kettle reboiler is improved, the condensing efficiency of the rectifying tower is improved, and the product quality is improved. Therefore, the energy consumption of the rectifying tower is reduced, the production cost of the rectifying tower is reduced, and meanwhile, the timeliness of finding and processing the abnormal condition of the energy consumption of the rectifying tower is improved.

This invention discloses a radio frequency (RF) control method based on tuning response and harmonic optimization, relating to the field of RF technology. The method includes: Step S1: Generating an array configuration word in the target RF system using a multi-capacitor switching array; Step S2: Generating an initial RF signal by driving a switch state switch using the multi-capacitor switching array; Step S3: Iteratively calculating notch filter parameters using an iterative optimization method; Step S4: Configuring the iteratively generated optimal notch parameters to the notch filter to filter and correct the initial RF signal. Compared with existing technologies, this invention utilizes a multi-capacitor switching array to acquire RF signal spectral data, constructs an iterative optimization process, and combines iterative optimization of notch filter parameters with optimal notch parameter correction, thereby reducing the system's residual harmonic measurement value. It has the advantages of effectively reducing residual spurious power and maintaining high signal-to-noise ratio and low error performance, while reducing systemic interference.

The present invention provides a polymer composite floating plate track bed vibration isolator capable of achieving multi-directional vibration isolation effect, comprising a connecting device, a pressure bearing device and a vibration isolation device, wherein the connecting device comprises a foundation sleeve, a ball stud, a hanging bolt and a bottom plate connecting bolt, wherein the foundation sleeve is pre-buried in the floating plate and connected to the ball stud by threaded cooperation, the end of the ball stud is hemispherical, the pressure bearing device comprises an upper cover plate, a pressure bearing plate and a bottom plate, wherein the pressure bearing plate and the bottom plate are connected to the vibration isolation device, a rubber coating is arranged inside the upper cover plate, the upper surface is connected to the floating plate, and power is transmitted to the pressure bearing plate through the ball stud, a spherical groove is provided in the middle of the pressure bearing plate, which cooperates with the spherical surface of the ball stud, the vibration isolation device comprises a retaining frame and an elastic matrix, the middle part of the retaining frame is opened, and the elastic matrix penetrates into the hole of the retaining frame. The present invention develops a polymer composite floating slab roadbed vibration isolator which can achieve multi-directional vibration isolation effect, which not only has obvious vibration isolation effect on the vertical load generated during train operation, but also has good vibration isolation effect on the lateral and longitudinal loads generated during train operation.

The invention belongs to the technical field of rare earth magnesium alloy materials, and discloses a high-toughness rare earth magnesium alloy deformed material which is prepared from the following raw materials in percentage by mass: 5.1-7% of Sm, 1-3% of Yb, 0.6-1% of Zn, 0.4-0.6% of Zr and the balance of Mg. A preparation method comprises the steps of smelting and casting, homogenizing treatment, variable-speed isothermal extrusion treatment, aging treatment and the like. According to the rare earth magnesium alloy deformation material and the preparation method thereof, the Sm and Yb elements are added into the Mg-Zn-Zr series alloy, the proportion of all the metal elements in the alloy is adjusted, the rare earth magnesium alloy deformation material shows excellent comprehensive mechanical performance, the yield strength ranges from 459 MPa to 469 MPa, the tensile strength ranges from 477 MPa to 484 MPa, and the ductility ranges from 9.3% to 10.0%.

The utility model relates to the technical field of maintenance cars, and discloses an intelligent maintenance trolley which comprises an equipment bottom plate, a driving assembly is connected to the lower surface of the equipment bottom plate in an inserted mode, and a containing box, a support, a gear and a tray are connected to the upper surface of the equipment bottom plate in an inserted mode. The device is reasonable in structure, the driving motor on the lower surface of the driving bottom plate drives the driving wheels to rotate so that the device can move forwards and backwards, the guide motor rotates so that the guide rods drive the guide wheels to rotate so that the device can steer, and the device can move and steer conveniently. And after a limiting rod is pulled out and a placing box is pulled out, tools needing to be used are placed in the placing box, the equipment is brought to a maintenance site, the tools are conveniently and rapidly transported to the maintenance site, the working efficiency is improved, and the labor intensity of workers is reduced. Therefore, the problems that a worker needs to hold various devices for maintenance, movement is inconvenient, and the body is hurt due to the fact that the worker holds tools for a long time are solved.

The utility model discloses a TMV test strip analyzer and relates to the technical field of test strip analyzers. The TMV test strip analyzer comprises a box body, a material opening is formed in the front side of the box body, a box door is hinged to one side of the material opening, a connecting plate is fixedly installed on the rear side of the box door, an analyzer body is fixedly installed at the top of the inner side of the box body, a base is fixedly installed at the bottom of the inner side of the box body, and the TMV test strip analyzer further comprises four adjusting assemblies arranged on the box body. According to the TMV test strip analyzer, the heights of the corners of the box body can be adjusted through the four adjusting assemblies, so that the box body can be horizontally placed, in the test strip detection process, the test strip detection precision can be improved, errors are reduced, the connecting plate and the box door can be positioned through the positioning assembly, and in the test strip detection process, the detection accuracy is improved. The influence on the test strip detection process caused by air flow generated by rotation of the box door is avoided, and the stability in the detection process is improved.

The utility model discloses a temperature and humidity monitoring device for a vegetable greenhouse, which belongs to the technical field of vegetable planting and comprises a fixed table, four telescopic rods are fixedly mounted on the upper surface of the fixed table, a placement table is fixedly mounted at one end of each telescopic rod, and a wiping assembly is arranged on the inner wall of the placement table; according to the device, the wiping assembly is arranged, a reciprocating lead screw rotates under the action of a worm gear, a movable sleeve drives a wiping plate to move back and forth under the action of threads on the outer surface of the reciprocating lead screw, the wiping plate wipes the side wall of the monitor when moving back and forth, and therefore a sensing element is wiped; according to the monitoring device, a sensor on the monitoring device is automatically wiped while the monitoring device is lifted, so that errors of a monitoring structure caused by condensed water drops are reduced, the monitoring accuracy of the monitoring device for monitoring different heights is effectively improved, and meanwhile, the possibility that too much condensed water drops permeate into a machine to cause damage to the machine can be avoided.

The invention discloses a visual intervertebral disc width and depth measuring device, which relates to the technical field of medical instruments and comprises a measuring assembly, an acting pull rod, an outer sleeve, a working tube, a channel tube, an optical tube, a handle bracket, a fixed handle, a movable handle and an eyepiece assembly, the outer side wall of the outer sleeve and the outer side wall of the working tube are each provided with identification scales used for measuring the depth of the intervertebral disc. The tail end of the outer sleeve is inserted into the handle support, a linear toothed rail is fixed to the tail end of the outer sleeve, an adjusting knob penetrates through the side face of the handle support, and a gear matched with the linear toothed rail is arranged on the adjusting knob; an arc-shaped ruler is fixed between the tail end of the linear toothed rail and the fixed handle and penetrates through the movable handle; scales for measuring the width of the intervertebral disc are arranged on the arc-shaped ruler; the tail end of the optical tube penetrates through the handle support and is aligned with the eyepiece assembly arranged at the tail end of the handle support. According to the invention, the technical problems of large error and inaccuracy existing in width and depth measurement of the intervertebral disc in the prior art are solved.

The application relates to the technical field of display panel production equipment, and discloses a substrate bonding device and method. The substrate bonding device is used for bonding a flexible substrate and a rigid substrate which are respectively provided with a first bonding area and a second bonding area, and comprises a table assembly and an image acquisition assembly. The table assembly comprises a first light-transmitting part and a second light-transmitting part, the first bonding area is attached to the first light-transmitting part, the second bonding area can be arranged opposite to the second light-transmitting part, the image acquisition assembly is arranged below the table assembly, and images of the first bonding area and the second bonding area are respectively acquired through the first light-transmitting part and the second light-transmitting part. The thickness of the second light-transmitting part is greater than that of the first light-transmitting part, so that the focal point of the image acquisition assembly for acquiring the image through the second light-transmitting part is higher than the upper surface of the first bonding area. The substrate bonding device can simultaneously focus on the first bonding area and the second bonding area and acquire clear images, the steps are few, and the bonding efficiency and precision are high.

The utility model belongs to the field of precision machining, and particularly relates to a clamp for a test of grinding silicon carbide ceramics by porous diamond abrasive particles. The clamp is composed of a clamping part and an angle fine adjustment part, the clamping part comprises a clamping block, a positioning block and a compression bolt and is used for clamping a workpiece, and the angle fine adjustment part comprises a bench clamp seat, a limiting block, a chassis, a base, a locking handle, a horizontal angle needle, a vertical angle needle, a blocking cover and a limiting rod. The included angle of the silicon carbide ceramic workpiece relative to the grinding direction of the porous diamond abrasive particles can be changed, and then the cutting depth of the abrasive particles is changed. According to the device, the cutting depth of the abrasive particles can be accurately controlled, and effective help can be provided for self-sharpening research of the porous diamond abrasive particles.

The present invention provides an easily replaceable polymer composite floating plate track bed vibration isolator, comprising a connecting device, a pressure bearing device and a vibration isolation device, wherein the connecting device comprises a foundation sleeve, a ball bolt, a hanging bolt and a bottom plate connecting bolt, wherein the foundation sleeve is pre-buried inside the floating plate and connected with the ball bolt by threaded fit, the end of the ball bolt is hemispherical, the pressure bearing device comprises an upper cover plate, a pressure bearing plate and a bottom plate, wherein the pressure bearing plate and the bottom plate are connected with the vibration isolation device, a rubber coating is arranged inside the upper cover plate, the upper surface is connected with the floating plate, and power is transmitted to the pressure bearing plate through the ball bolt, the pressure bearing plate has a spherical groove in the middle, which cooperates with the spherical surface of the ball bolt, the vibration isolation device comprises a retaining frame and an elastic matrix, the retaining frame has a hole in the middle, and the elastic matrix penetrates into the hole of the retaining frame. The present invention develops an easily replaceable polymer composite floating plate track bed vibration isolator, which can conveniently realize the replacement of the floating plate track bed vibration isolation system, and has good vibration isolation effect and high reliability, and can play a good vibration isolation effect.

The invention discloses a measuring device for garment customization. The measuring device mainly comprises a bin body, a sliding assembly, a driving part, an infrared receiver and a handheld positioner, and the inner wall of the bin body is provided with the sliding assembly, the driving part and the infrared receiver. The invention further discloses an operation method and a using method of the measuring device. Compared with the prior art, the 3D intelligent measurement system has the following advantages and effects that the specific point position of the user is positioned through the handheld positioner, and the problem that in a traditional mode, rejection is caused by measurement of a master or the error of the 3D intelligent measurement system is increased due to loose wearing of the user can be solved.

The present invention provides a cell switching method and device based on leaky coaxial cable positioning, the method comprising the following steps: the receiver positions itself according to the received time code division orthogonal frequency division multiplexing (TC-OFDM) signal to obtain the current positioning result and the historical positioning error index; the receiver determines whether to capture the TC-OFDM signal of the next leaky coaxial cable (LCX) cell according to the obtained current positioning result and the historical positioning error index; in the case of determining to capture the TC-OFDM signal of the next LCX cell, the receiver captures the TC-OFDM signal of the next LCX cell, and positions according to the captured signal, and obtains the receiver speed based on the change rate of the positioning result; in the case that the change of the receiver speed meets the predetermined condition, it is determined to switch the LCX positioning cell. The cell switching method based on the change trend of the leaky coaxial cable positioning result of the present invention has higher switching accuracy and lower switching delay.

The utility model discloses a brushless rotor core positioning tool which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a heightening plate, the upper end of the heightening plate is fixedly connected with a bearing plate, the upper surface of the bearing plate is provided with a clamping assembly, and the bearing plate is clamped with a rotor workpiece through the clamping assembly. Firstly, it is guaranteed that the tool is stable, all parts are firmly connected and rotate flexibly, a to-be-machined rotor iron core is roughly aligned with the center of a fixing rod and placed on a bearing plate, then an adjusting rod is rotated to drive a bidirectional threaded rod to rotate, a first sliding block and a second sliding block synchronously and reversely move, a main butt-joint inclined plate is pushed to drive a butt-joint piece to get close to and clamp a rotor workpiece, and the rotor iron core is machined. The number of rotation turns is controlled through scales of the adjusting rod to adapt to iron cores of different specifications, and high-precision positioning is achieved; machining operation is carried out after positioning and clamping are completed, and it is guaranteed that the iron core is stable and air gaps are uniform during machining; when the model of the iron core is replaced, the adjusting rod is reversely rotated to loosen and clamp, and the positioning and clamping steps are repeated after rapid replacement.

The present invention provides a polymer composite floating plate track bed vibration isolator, comprising a connecting device, a pressure-bearing device and a vibration isolation device, wherein the connecting device comprises a foundation sleeve, a ball stud, a hanging bolt and a bottom plate connecting bolt, wherein the foundation sleeve is pre-buried in the floating plate and connected to the ball stud by threaded cooperation, the end of the ball stud is hemispherical, the pressure-bearing device comprises an upper cover plate, a pressure-bearing plate and a bottom plate, wherein the pressure-bearing plate and the bottom plate are connected to the vibration isolation device, a rubber coating is arranged inside the upper cover plate, the upper surface is connected to the floating plate, and power is transmitted to the pressure plate through the ball stud, a spherical groove is provided in the middle of the pressure plate, which cooperates with the spherical surface of the ball stud, the vibration isolation device comprises a retaining frame and an elastic matrix, the middle part of the retaining frame is opened, and the elastic matrix penetrates into the hole of the retaining frame. The present invention develops an automatically aligning polymer composite floating slab ballast isolator, which can achieve automatic alignment according to the installation position of the floating slab ballast, so that the load borne by the isolator is always perpendicular to the pressure plate, and has good vibration isolation effect and high reliability, and can achieve good vibration isolation effect.

The utility model relates to a pipetting dilution instrument which comprises a liquid storage bottle, a first three-way valve, a second three-way valve, a small-volume pipetting assembly, a large-volume pipetting assembly, a needle tube assembly and a cleaning block. According to the pipetting dilution instrument, two hands of a laboratory technician are liberated, sample dilution and needle tube and pipeline cleaning are carried out through the instrument, the experiment efficiency is improved, the experiment is standardized and processed, the instrument is more accurate, labor and time are saved, the result is more accurate, the labor is saved, the injury and fatigue of the personnel are avoided, and the working efficiency is improved. The dilution result is more accurate, errors are reduced, the experiment success rate is guaranteed, and experiment refinement is improved.