47results about How to "Guaranteed location" patented technology

The invention relates to a casting method for casting the three-way ventilate branch tube of thin-wall iron element, which comprises: (1), using the curvature formed by the central line of C exhaust open and the central line of A exhaust tube, to make the C and A exhaust opens above the parting surface, to be shaped via upper and lower outer moulds; the tube core and sand core are put via the serial number, and it uses pour system that combines side pour and bottom pour with contract cap and cold iron; (2), preparing outer mould, core box, section sheet, pour cap, and the wood mould that checking sample plate; (3), preparing the casting element and sand core; (4), drying the casting element and the sand core, and closing the tank after arranging the sand core; (5), smelting and pouring; (6), cooling and molding; (7), cleaning the casting element; (8), thermally treating; (9), testing the water pressure. The invention can improve the quality of casting element, and improve the producing efficiency.

The invention discloses a method and a system for updating and warehousing urban pipelines on the basis of an ArcGIS (geographic information system). The method includes the following steps of acquiring spatial ranges of data of source databases; deleting certain data in target databases; establishing attribute import configuration; importing the data in the source databases into the target databases according to the attribute import configuration and cleaning and filtering certain attribute data; performing edge matching, and specifically, manually correcting and adjusting urban pipeline data and pipe point data in conflict ranges; establishing attribute association relationships among the urban pipelines and pipe points according to geometric network interfaces, namely assigning values to pipeline and pipe point association attributes in urban pipeline spatial databases by the aid of geometric network development interfaces; establishing the attribute association relationships among the urban pipelines and the pipe points; and updating and warehousing the data. The certain data which are deleted from the target databases correspond to the acquired spatial ranges. The certain attribute data do not conform to database constraints in the target databases. The method and the system have the advantages that urban pipeline updating and warehousing processes can be standardized and unified by the aid of the method and the system, and the method and the system provide a powerful support for application such as data sharing, migration and integration for the urban pipelines.

The invention discloses an adaptive layering method for preventing feature deviation of 3D printing model, including the creation of three-dimensional models, A mesh process is carried out on that three-dimensional model, to generate the STL file, reading the STL file, and preprocessing the data read from the STL file, to obtain the preprocessed data, recognizing the feature height on the three-dimensional model after gridding, A set of height data is obtained to adjust the spacing between adjacent feature heights, the height data is adjusted, The feature height is sliced at a position of thefeature height, and an adaptive slicing is performed between adjacent feature heights to obtain slice outline information, generate a print file, and print a 3D model. The invention ensures that the layered plane passes through the position where the model features are located, thereby retaining the three-dimensional model features, effectively preventing the feature deviation and loss caused by the layer-by-layer accumulation of materials in the printing process of the 3D printing model, and reducing the step error.

The invention provides a sensor shell processing method, which specifically comprises the following steps: 1, a datum plane is polished on a blank; 2, a large plane is milled, a machined datum plane is established, and positioning holes A and B are drilled and milled; 3, the large plane is milled, the machined datum plane is established, holes are drilled, the positioning holes are milled, a groove and an a circular groove are milled, and chamfering is completed; 4 steps are milled by the processed datum plane and positioning holes A and B in step 3, the angle of a fixture is rotated to mill a slope and drill and bore an inclined hole; 5, the datum plane and the positioning holes are positioned to be unchanged, and a rotary processing center is provided with four shafts to complete the processing of surfaces and holes in a 90-degree direction, i.e. step surfaces are milled and holes are drilled and bored; and 6, the datum plane and the positioning holes are positioned to be unchanged, and the rotary processing center is provided with the four shafts to complete the drilling and tapping of surfaces and screw threads in a 0-degree direction. According to the sensor shell processing method disclosed by the invention, fit clearance is reduced, the position degree and the smooth finish are improved, and the precision and the sensitivity of a sensor are greatly improved.

Aiming at the problems that time and labor are wasted when female and male silkworm eggs with different egg colors are separated and the requirement of production of silkworm seeds on time schedule is difficult to meet, the invention provides an instrument for automatically and accurately separating female and male silkworm eggs at a high speed, and the instrument is labor-saving and ensures thatthe silkworm eggs are not damaged. The separator for female and male silkworm eggs, provided by the invention, takes the characteristic that different sexual silkworm eggs have different egg colors as a design characteristic for recognizing and distinguishing the female and male silkworm eggs and focuses on overcoming the physiological property of the silkworm eggs that the silkworm eggs is not favorable for mechanical and automatic control. Through applying technologies such as turnplate type obliquely scraping egg transportation, and the like and using devices such as a single-channel prearranged counting and number control egg supply device, a multi-channel coil shunting and spaced radiation state sorting device, a respectively independent color sensor photoelectric recognition and electromagnetic egg pocketing device separation device, an obliquely scrapping, egg collecting and separately storing device and the like, high-speed and precise female and male silkworm egg separation is realized, the purposes of not damaging the silkworm eggs and maintaining the activity of the silkworm eggs are achieved, and labor is also greatly reduced.

The invention provides an all-metal four-arm equal-angle spiral circularly-polarized antenna. The all-metal four-arm equal-angle spiral circularly-polarized antenna comprises an all-metal equal-anglespiral-structure radiation arm, a metal reflecting cavity, a coaxial feeder and a cylindrical resonant cavity, wherein a single coaxial feeding probe perpendicular to ground is used as coaxial cable feeding and is connected with a central metal feeding round ring, parallel feeding is performed by a pair of upper dipole arms of the metal feeding round ring in the radiation arm, a pair of lower dipole arms which are arranged in parallel are connected with grounding ends coaxial to each other, so that space positions of the four dipole arms and electromagnetic waves on the arms are in orthogonality to form a condition required by circular polarization. In order to solve the problem of unbalanced feeding of a coaxial line, the coaxial feeder is designed to be a coaxial taper balun structure, so that a load is matched with feeder impedance; in order to achieve the function of unidirectional radiation of the antenna, the metal radiation cavity is additionally formed in a back part of the antenna; and the all-metal four-arm equal-angle spiral circularly-polarized antenna has the characteristics of wide frequency band, small size, high gain and the like, can be embedded and is applicable to the field of a modern communication system and electronic countermeasures.

The invention discloses a construction technology for a building foundation and a main structure. A constructed building is of a frame structure or a frame shearing wall structure. The technology includes the steps: firstly, constructing pile foundations; secondly, constructing reinforced concrete structures of the constructed building with a plurality of floors from bottom to top; and thirdly, constructing masonries. The pile foundation construction process includes: constructing cast-in-situ bored piles; performing waterproof treatment for pile heads; constructing fine aggregate concrete protection layers; and constructing foundation slabs. When the reinforced concrete structure of any floor of the constructed building, firstly, a bearing structure of the currently constructed floor is poured, and secondly, floor slabs of the currently constructed floor are poured. After the reinforced concrete structures are constructed, filler walls on the floors are constructed. The construction technology is simple in step, reasonable in design, high in operability, convenient to implement and fine in construction effect, and the construction quality of the building can be effectively ensured while construction period is ensured.

The invention discloses centrifugal fan assembly equipment. The centrifugal fan assembly equipment includes a rack, and a wind wheel feeding device, a wind wheel turning device, a conveying jig device, a first glue dispensing device, an annular magnetic coil feeding device, an annular magnetic coil pressing device, a second glue dispensing device and a discharging device arranged on the rack; thewind wheel feeding device is connected to the wind wheel turning device; the wind wheel turning device is connected to the conveying jig device; the conveying jig device is installed in the center ofthe rack; and the wind wheel turning device, the first glue dispensing device, the annular magnetic coil feeding device, the annular magnetic coil pressing device, the second glue dispensing device and the discharging device are sequentially arranged around the outer circumference of the conveying jig device. The invention has the advantages of efficient and orderly connection of assembly processes and high production efficiency.

The invention discloses an installation and adjustment device and method of an optical fiber collimator of a multi-path optical fiber rotary connector and belongs to the technical field of optical signal rotary transmission. The installation and adjustment method comprises the following steps: fixing an input end optical fiber collimator on a five-dimensional adjustment frame, connecting an input end with a light source, and installing an output end into a transmission mechanism mounting hole; adjusting the five-dimensional adjustment frame to enable the light spot position of the output end to be located at the ideal light spot position; performing coupling coarse tuning according to the index on an optical power meter until the insertion loss index of the optical fiber collimator meets the coupling coarse tuning requirement; adjusting the five-dimensional adjustment frame, and making the output end optical fiber collimator screwed into the transmission mechanism mounting hole; and rotating the input end of the transmission mechanism, and adjusting the five-dimensional adjustment frame according to the index change of the optical power meter until the indexes on the optical power meter all meet the installation and adjustment requirements. According to the invention, the coupling installation problem of the optical fiber collimators of the multi-path optical fiber rotary connector can be solved, and the coupling installation and adjustment precision of the optical fiber collimators is improved.

The invention provides a manufacturing process of a non-woven fabric hand bag. Operation is completed through cooperation of an installation frame, an expansion device, two pressing devices and two handle positioning devices, a problem that the traditional connection mode has many steps and is tedious can be solved, when a lifting handle is adhered to the marking position, manual operation is adopted, problems that the positions of lifting handles of various finished products are slightly different due to small-range dislocation, the lifting handles and a bag body slip due to lubricity of gluesolution during manual pressing, the manual pressing force is not large, and the lifting handles and the bag body possibly fall off in advance before the glue solution is solidified are solved.

The invention provides a two-dragging-three type front-rear linkage brake, which belongs to the technical field of machinery and solves the problems of difficulty in controlling and poor safety of existing brakes. The two-dragging-three type front-rear linkage brake comprises a front brake pump, a rear brake pump, a front brake clamp and a rear brake clamp, the front brake pump is connected with a brake handle, and the rear brake pump is connected with the rear brake clamp through an oil pipe. The brake further comprises a diverter valve, a return spring and a piston are mounted in a piston hole which is arranged in a valve body of the diverter valve, a port of a rear cavity of the piston hole is connected with a valve cap bolt and further connected with the rear brake pump through an oil pipe, and a front cavity of the piston hole is connected with the front brake clamp through an oil pipe. A lengthened oil passing bolt communicated with the piston hole is mounted on the diverter valve, and an oil pipe connector which is respectively connected with the front brake pump and the rear brake pump is connected to the lengthened oil passing bolt. The two-dragging-three type front-rear linkage brake has the advantages of high safety, stability in braking and flexibility in braking.

The invention relates to a high-speed railway aluminium alloy track plate pressing device. The device comprises a tie down block, landing legs, side fixing plates, pressing pull rods and pushing screws; the device is characterized in that the tie down block and the landing legs are welded perpendicularly to form a shape of a door; the side fixing plates are arranged at the lower ends of the landing legs in parallel and connected with the landing legs through bolts; the pressing pull rods are connected with a track base plate and the tie down block and connected with reserved openings of the track base plate in a suspended mode through rebar; the pushing screws push an edge sealing formwork through the side fixing plates; the landing legs and the side fixing plates are made from aluminum alloy materials. Accordingly, it is guaranteed that ballastless track construction is conducted smoothly, the self-compacting concrete pouring quality is guaranteed, and the working efficiency is improved; construction installation and transportation are convenient, operation is easy, learning is fast, and the self-compacting concrete pouring quality and the fixed track plate space position are guaranteed; turnover is conducted many times, and the phenomena of track plate floating, the self-compacting concrete layer open joint and the like are avoided.

The invention provides a device used for radicula sampling and radicula growth monitoring and a use method thereof. A radicula growth monitor is applicable to being buried in a selected soil positionfor repeated use, the device comprises a shell body, the shell body comprises a side wall and a bottom wall, containing space with generally consistent inner diameters from top to bottom is enclosed by the side wall, an upper opening of the containing space is opened wide, the bottom wall is arranged on a lower opening, and meshing openings are uniformly formed in the side wall and the bottom wall; the diameter of each mesh opening is >=2 millimeters and <=5 millimeters; the shortest distance between any two adjacent mesh openings is <=5 millimeters. The radicula growth monitor can overcome heterogeneity influences and reduce result differences caused by different inner and outer environments of the containing space to the largest extent, thereby detecting growth conditions of some area more objectively and accurately.

The invention discloses an orifice plate flow meter throttling device which comprises two opposite connecting flanges, an annular orifice plate body and permeable holes, wherein the annular orifice plate body is arranged between the connecting flanges. A center hole is formed in the center of the orifice plate body, the permeable holes penetrate two sides of the orifice plate body, installing handles are fixedly connected at the outer edge of the orifice plate body, positioning pins are arranged on the connecting flanges, and positioning holes are formed in the orifice plate body. When the throttling device is used for the gas fluid pressure difference flow metering process during which liquid is easily precipitated, precipitated liquid cannot be gathered at the front end of the orifice plate body of a pipeline, measuring accuracy of an orifice plate type flow meter can be improved, installing requirements of a center hole axis on axes of the corresponding pipe sections are met, and the installing handles can serve as position calibrations of the permeable holes.

The invention discloses a suction nozzle alignment device and method under visual compensation. The device comprises a magnetic base, a supporting plate, special printing paper, a lengthened scaling board, a light source, a camera, a moving mechanism, a suction rod and a suction nozzle. The supporting plate is arranged on the magnetic base. The special printing paper is arranged on the supporting plate. The moving mechanism is connected with the suction rod. The lower end of the suction rod is provided with the suction nozzle. The camera is arranged below the moving mechanism. The camera is arranged on the lower end of the camera. The light source is arranged on the lower end of the lens. The lengthened scaling board is arranged below the light source. According to the invention, the suction nozzle alignment accuracy and reliability under the visual compensation are effectively improved, the precision is high, the space positions of the camera and the suction nozzle are well ensured, and by using the device and method provided by the invention, the precision of the measured space relative position value between the camera and the suction nozzle under the practical machining state can reach more than 0.01 mm.

The invention relates to a centering compressing device for a flue flange. The centering compressing device for the flue flange comprises an upper clamping plate and a lower clamping plate; the upperclamping plate is connected with the lower clamping plate through a lifting device; a toothed plate is arranged on the inner side of each of the upper clamping plate and the lower clamping plate; thetwo toothed plates are symmetrically distributed in parallel up and down; a fixed pin is also arranged on the inner side of the upper clamping plate and is positioned between the lifting device and the corresponding toothed plate; a movable pin is mounted on the inner side of the lower clamping plate; the movable pin is also positioned between the lifting device and the corresponding toothed plate; the movable pin is mounted on the lower clamping plate through a sliding block and a sliding rail; a moving hydraulic cylinder which is used for driving the movable pin to move forward and backwardis also arranged on the movable pin; the two ends of the moving hydraulic cylinder are respectively hinged to the movable pin and the lower clamping plate; and when the movable pin is positioned in the middle of the sliding rail, the fixed pin is positioned right above the movable pin. According to the centering compressing device for the flue flange, the flue flange is centred and compressed quickly; the centering compressing device for the flue flange is light, convenient and small, and is easy to operate; the construction safety can be greatly improved; the mounting work efficiency is improved; and convenience is provided for mounting of flue replacement.

The invention discloses a commutator press-fitting assembly, method and device. The commutator press-fitting assembly comprises a feeding mechanism used for outputting a commutator, a fixing mechanismused for fixing a rotor, a positioning mechanism used for limiting the rotor, a material obtaining mechanism used for obtaining the commutator from the feeding mechanism, a press-fitting mechanism used for pressing the commutator on the material obtaining mechanism on a rotating shaft of the rotor, an output Hall sensor used for sensing the commutator on the feeding mechanism, and a press-fittingHall sensor used for sensing the position of the commutator on the rotating shaft. The technical effects of automatic feeding of the commutator and automatic obtaining of the commutator are achieved,and the technical effect of automatically pressing the commutator on the rotor is achieved, so that the press-fitting efficiency of the commutator is improved and the labor cost is reduced; and meanwhile, the position of the commutator on the rotating shaft is sensed to ensure that the commutator is pressed in the designated position of the rotating shaft, so that the product percent of pass is ensured.

The invention discloses a pre-pressing construction method for a fabricated 0 # block construction bracket, and belongs to the technical field of bridges. The method comprises the following steps: mounting the 0 # block construction bracket, pre-pressing by using a pre-pressing assembly in a graded tension loading manner, and removing the 0 # block construction bracket. When the pre-pressing load piece is tensioned and loaded, the tensioning ends of the steel strands bear tensioning stress which is tensioned inwards along the top wall, the tensioning stress acts on the upper longitudinal beam assembly through pulley limiting and direction changing, the anchoring ends of the steel strands are tensioned downwards, and pre-pressing load is achieved. The steel strands are converted in the horizontal and vertical directions. The length of the steel strands is the stroke of the upper longitudinal beam assembly bent to the top wall of the bridge pier body through the lower counter-force beam assembly, is only related to the length of the upper longitudinal beam assembly, the distance between the upper longitudinal beam assembly and the lower counter-force beam assembly, the length of the lower counter-force beam assembly, the distance between the lower counter-force beam assembly and the top wall of the bridge pier body and the like, and is not related to the height of the bridge pier body, and the stress loss of the steel strands is effectively reduced.

The invention discloses a side plate automatic conveying device for seamless welding of a cable ladder. The side plate automatic conveying device for seamless welding of the cable ladder comprises a bottom frame and a top frame. Multiple bottom sliding wheels are arranged on the bottom frame, annular grooves are formed in the middles of the bottom sliding wheels, and the width of each annular groove is matched with the width of the bottom of a corresponding side plate of the cable ladder. Multiple top sliding wheels are arranged on the side wall of the top frame. A moving trolley is arranged on the top frame, and the top of the moving trolley is connected with the top frame through a sliding rail. Multiple moving frames are connected to the side wall of the moving trolley, negative-pressure suction devices are connected to the moving frames, and suction nozzles of the negative-pressure suction devices abut against the side wall of each side plate of the cable ladder in a connection mode. Each side plate is effectively sucked by the negative-pressure suction devices, and then the whole side plate is forwards conveyed under the action of the moving trolley.

The invention relates to a centering compressing device for a flue flange. The centering compressing device for the flue flange comprises an upper clamping plate and a lower clamping plate; the upperclamping plate is connected with the lower clamping plate through a lifting device; a toothed plate is arranged on the inner side of each of the upper clamping plate and the lower clamping plate; thetwo toothed plates are symmetrically distributed in parallel up and down; a fixed pin is also arranged on the inner side of the upper clamping plate and is positioned between the lifting device and the corresponding toothed plate; a movable pin is mounted on the inner side of the lower clamping plate; the movable pin is also positioned between the lifting device and the corresponding toothed plate; the movable pin is mounted on the lower clamping plate through a sliding block and a sliding rail; a moving hydraulic cylinder which is used for driving the movable pin to move forward and backwardis also arranged on the movable pin; the two ends of the moving hydraulic cylinder are respectively hinged to the movable pin and the lower clamping plate; and when the movable pin is positioned in the middle of the sliding rail, the fixed pin is positioned right above the movable pin. According to the centering compressing device for the flue flange, the flue flange is centred and compressed quickly; the centering compressing device for the flue flange is light, convenient and small, and is easy to operate; the construction safety can be greatly improved; the mounting work efficiency is improved; and convenience is provided for mounting of flue replacement.

The invention discloses a preloading construction method of an assembled 0# block construction bracket, which belongs to the technical field of bridges, and includes installing a 0# block construction bracket, using preloading components to perform preloading and dismantling 0# by adopting a graded tension loading method # Block construction brackets. In the present invention, when the preloading part is tensioned and loaded, the tension end of the steel strand is subjected to the tension stress that is stretched inward along the top wall, and the tension stress acts on the upper longitudinal beam assembly through the limit and direction change of the pulley. The anchorage end of the stranded wire is tensioned downwards to realize the preload. The steel strand is transformed horizontally and vertically, and its length is the stroke from the upper longitudinal beam assembly to the top wall of the bridge pier through the lower reaction beam assembly, which is only related to the length of the upper longitudinal beam assembly and its length to the lower reaction beam The component distance and the length of the lower reaction beam component are related to the distance from it to the top wall of the bridge pier, and have nothing to do with the height of the bridge pier, effectively reducing the stress loss of the steel strand.

The invention relates to an automatic bottle opener which comprises a motor, a power supply, a reduction gearbox, a wine bottle embedding hole and a bottle opener body, wherein the bottle opener body is composed of a groove structure at the upper part and a bottle opener pothook in the bottom center; fixing holes are symmetrically formed in the upper end of the groove structure; the power supply is connected with a power switch and provides a power source for the motor; a cross beam for hanging springs is arranged at the upper end of the motor; the reduction gearbox is arranged at the lower part of the motor; the bottom of the reduction gearbox is embedded in the groove structure of the bottle opener body; the bottom end of the groove structure is fixed at the upper end of the wine bottle embedding hole; the bottle opener pothook is arranged in the wine bottle embedding hole; cam switches are symmetrically arranged on left and right sides of the reduction gearbox and are welded on an output shaft of the reduction gearbox; and springs are symmetrically arranged at two ends of the cross beam for hanging the springs. The automatic bottle opener is convenient to use, time-saving and labor-saving, reasonable in structure, small and compact, stable and reliable in working, low in failure rate, long in service life and precise control in rotary speed.

The present invention discloses a projection light machine which comprises a shell, a beam splitter prism, a DMD light modulator, a projection lens and a shading heat dissipation assembly, the shell is provided with an inner cavity, a front installation opening and a rear mounting port, and a plugging opening and a penetrating groove which are opposite to each other are formed in the position, close to the front mounting port, of the inner wall face of one side in the left-right direction; the DMD light modulator and the projection lens are respectively mounted at the rear mounting port and the front mounting port; the beam splitter prism is located in the inner cavity and comprises an initial incident plane, an emergent incident plane and an imaging emergent plane; the shading and heat dissipation assembly comprises a shading piece and a heat dissipation piece; the shading piece penetrates through the penetrating groove and extends into the inner cavity, the inner end is inserted into the insertion port, and the outer end is connected with the heat dissipation piece; the shading piece comprises a first shading part, and the first shading part is arranged opposite to the imaging emergent surface; and in the left-right direction, the length of the first shading piece is greater than that of the imaging emergent surface. The projection light machine is good in heat dissipation and projection effect when the DMD light modulator with long-side incident illumination light beams is applied to the projection light machine.

The invention relates to the technical field of tableware assembly and combination, in particular to a tableware combination device which comprises a first track, a second track, and a first clamp, and the first clamp is used for conveying second tableware from the second track to a first conveying section. The conveying direction of the first conveying section, the conveying direction of the first clamp and the conveying direction of the second track are the same. Different tracks are arranged to convey different tableware, and a turning section is arranged on the first track, so that the spatial position of the second tableware on the second track during assembly is guaranteed, and the conveying direction of the second track and the conveying direction of the first clamp are the same as the conveying direction of the first conveying section of the first track. In the conveying and combining process of the tableware, the consistency of the directions and the sizes of the speeds of the different tableware can be kept, so that the splicing accuracy is guaranteed, and the situation that the tableware flies out or collides with other tableware to be damaged is avoided.

The invention discloses a cast iron swing check valve. The cast iron swing check valve comprises a water passing opening. A valve body is fixedly connected to the upper end of the water passing opening. A seal ring is arranged inside the water passing opening. The other end of the seal ring is provided with a valve clack. A swing arm is fixedly connected to the upper end of the valve clack. An annular grooved block is hinged to the swing arm, connected to the inner wall of the valve body in a clamped manner and movably connected to the valve body. A handle is fixedly connected to the outer endof the annular grooved block. A half-ring-shaped opening is formed in the side, provided with the handle, of the valve body. The handle penetrates the valve body and is fixedly connected with the annular grooved block. A cavity is formed in the left side of the handle and internally provided with a cylinder. A hand lever is arranged at the outer end of the cylinder, penetrates the valve body andis fixedly connected with the cylinder. A spring is fixedly connected with the lower end of the cylinder. The other end of the spring is fixedly connected to the inner wall of the cavity. An annular cavity hole is formed in the upper end of the valve body. The portion, provided with the annular cavity hole, of the outer surface of the valve body is provided with buckling pillars. A valve deck is arranged at the upper end of the valve body. The inner wall of the valve deck is provided with step-shaped blocks. Hinge buckles are arranged on the upper surfaces of the step-shaped blocks.

The invention discloses an annular magnetic ring press-in device of a centrifugal fan assembly machine. The annular magnetic ring press-in device comprises a rotary suction conveying assembly, a rotary receiving assembly, a fixed base, a pressing cylinder, a press-in mechanism, a jack-up post and a jacking cylinder. The rotary suction conveying assembly is connected with the rotary receiving assembly. The rotary receiving assembly is located below the fixed base. The two sidewalls of the fixed base are provided with sliding rails. The press-in mechanism is movably connected to the fixed base through the sliding rails. The pressing cylinder is mounted at the upper end of the fixed base. The telescopic end of the pressing cylinder is connected with the telescopic end of the press-in mechanism. A vertical plate is arranged at the lower end of the fixed base. The side face of the vertical plate is provided with a sliding rail. The jack-up post is movably connected to the vertical plate through the sliding rail. The jack-up post and the press-in mechanism correspond to the rotary receiving assembly. The annular magnetic ring press-in device has the advantages that the press-in depth ofannular magnetic rings can be detected, and a wind wheel rotates effectively.

The invention discloses a novel fabricated 0# block construction bracket with a pre-pressing assembly, and belongs to the technical field of bridges. A lower counter-force beam assembly is arranged below an upper longitudinal beam assembly, and the pulleys are arranged on a lower counter-force beam assembly and a cable saddle assembly to change the direction of acting force; when a pre-pressing load piece is tensioned and loaded, the tensioning ends of the steel strands bear tensioning stress which is tensioned inwards along the top wall, the tensioning stress acts on the upper longitudinal beam assembly through pulley limiting and direction changing, the anchoring ends of the steel strands are tensioned downwards, and pre-pressing load is achieved. The steel strands are converted in the horizontal and vertical directions. The length of the steel strands is the stroke of the upper longitudinal beam assembly bent to the top wall of the bridge pier body through the lower counter-force beam assembly, is only related to the length of the upper longitudinal beam assembly, the distance between the upper longitudinal beam assembly and the lower counter-force beam assembly, the length of the lower counter-force beam assembly, the distance between the lower counter-force beam assembly and the top wall of the bridge pier body and the like, and is not related to the height of the bridge pier body, and the stress loss of the steel strand is effectively reduced.

The invention discloses a mask generation method, an image registration method, computer equipment and a storage medium, and belongs to the technical field of medical images. The method comprises the steps of determining an area where a target part of a patient is located and an area where a fixed part of the patient is located in a reference image; and based on the area where the target part is located and the area where the fixed part is located, generating an irregular mask area containing the target part and the fixed part. As the position of the fixed part of the patient generally does not change along with the passage of time, after the reference image and the to-be-registered image are registered according to the mask region containing the target part and the fixed part of the patient, the registration precision of the reference image and the to-be-registered image can be effectively improved.