75results about How to "Solve the height difference" patented technology

The invention discloses an automatic receiving and transferring device for a pneumatic material conveying system. The automatic receiving and transferring device is connected to a pneumatic conveying pipeline unit used for conveying objects to be conveyed and comprises a cabinet body, and a receiving and transferring pipeline, a supporting and lifting platform unit and a manipulator unit are arranged inside the cabinet body; the upper end of the receiving and transferring pipeline is used for communicating with the pneumatic conveying pipeline unit; the supporting and lifting platform unit is matched with the receiving and transferring pipeline, does lifting motion below the receiving and transferring pipeline and is used for lifting the objects to be conveyed upwards, conveying the objects to be conveyed into the receiving and transferring pipeline for pneumatic conveyance and used for falling down after receiving the objects to be conveyed from the receiving and transferring pipeline; and the manipulator unit is arranged on one side of the lifting platform unit and is used for placing the objects to be conveyed from the exterior of the cabinet body on the lifting platform unit for lifting the objects and conveying the objects pneumatically and used for placing the objects to be conveyed on the lifting platform unit outside the cabinet body. The automatic receiving and transferring device has the advantages that the structure is simple and compact and the automation degree is high.

The invention discloses a turboshaft engine which can be used for automobile, train and other means of transportation, aims at resolving the problem that the existing turboshaft engine can not be used for automobiles and trains, and comprises a gas compressor, a combustion chamber and a power turbo; the engine also comprises a gas compressing motor, an electricity generator, a gas compressor shaft and a power shaft; the gas compressor is rotationally connect with the gas compressing motor by the gas compressor shaft, the power turbo is rotationally connect with the electricity generator by the power shaft, the gas compressor shaft and the power shaft are two separated shafts, and the electric connection is applied between the electricity generator and the gas compressing motor.

The invention discloses a detection device for detecting a circuit board. The detection device comprises a base, a processor and a signal output unit, wherein a circuit board placement seat and a detection mechanism are arranged on the base; when the circuit board is placed on the circuit board placement seat, the detection mechanism moves relative to the circuit board placement seat, and is contacted with a detection point of the circuit board and used for detecting the circuit board; the detection mechanism sends the detection information of the circuit board to the processor; the processor forwards the received signal to the signal output unit; and the signal output unit outputs a detection result of the circuit board according to the received information. The invention aims to provide the detection device capable of automatically detecting the circuit board.

The invention discloses a turning roller path for direct rolling of a multi-strand continuous casting slab. The turning roller path comprises a plurality of conical rollers, a bearing seat which is arranged below the conical rollers and supports the conical rollers, a base which is arranged below the bearing seat and supports the bearing seat, a drive mechanism which is fixedly connected with the conical rollers and drives the conical rollers to rotate and a heat preservation cover which is arranged above the conical rollers in a covering manner, wherein the conical rollers are arranged in a manner of turning while climbing in the flowing direction of a continuous casting slab so as to form an arc-shaped roller path; and the conical rollers at the inlet of the arc-shaped roller path are arranged in a crossed manner. The turning roller path for direct rolling of the multi-strand continuous casting slab solves the problems about deviation and height difference of a continuous casting slab outlet line and a rolling line caused by a place and meets the demand for directly sending the continuous casting slab.

The application discloses a visual sense measuring instrument and a visual sense measuring method; the visual sense measuring instrument comprises a machine body, a horizontal circle, a vertical circle, a lens, an image sensor and a horizontal sensor, a distance sensor, a horizontal direction adjusting turn button and a vertical direction adjusting turn button; the central axle of the horizontal circle and the primary optic axis of the lens are respectively vertical to the central axis of the vertical circle; the central axle of the horizontal circle, the primary optic axis of the lens and thecentral axis of the vertical circle intersect in one point; the primary optic axis of the lens vertically intersects with the image plane of the image sensor; the range finding optical axis of the distance sensor and the primary optic axis of the lens parallel or overlap, and intersect with the central axle of the horizontal circle; the line array of a photosensitive unit array of the image sensor is parallel to the central axis of the vertical circle; the column array of the photosensitive unit array of the image sensor is vertical to the central axis of the vertical circle; the central axleof the horizontal sensor is parallel to the central axle of the horizontal circle. The visual sense measuring instrument and method are non-contact, high in precision, high in efficiency, and can improve the photogrammetry precision.

The invention discloses an assembled hollow pier based on end plate welding and a construction method of the assembled hollow pier. The assembled hollow pier comprise pile foundations, cast-in-place bearing platform, prefabricated pier columns and prefabricated cap beams and is characterized in that the cast-in-place bearing platform is formed at the upper ends of the pile foundations in a cast-in-place manner and horizontally connected with the pile foundations; the prefabricated pile columns are vertically connected onto the cast-in-place bearing platform, each prefabricated pile column comprises an embedded pier column section partially embedded into the bearing platform and prefabricated pier column sections, and the prefabricated pier column sections are sequentially vertically weldedupwards to reach a set height and then connected with the lower end of the corresponding prefabricated cap beam. The assembled hollow pier has the advantages that the prefabricated pier column sections and the embedded pier column sections are prefabricated in a centralized manner, industrial production can be achieved, and construction quality can be increased; the embedded pier column sectionsare embedded by the aid of the cast-in-place bearing platform, pier column height differences in practical engineering are avoided by embedding depth change and modularizing prefabricated pier columnlengths, and modularized prefabricated pier column lengths are achieved.

The invention discloses an extendable conveyor adjustable in butt-joint height. The extendable conveyor comprises a machine frame, a driving device and a plurality of sections of transmission devices; the transmission devices are sequentially connected in a nested mode, the transmission device on the outermost side is a main machine section conveying device and is connected with the machine frame, the transmission device on the innermost side is a telescopic section transmission device, and an electric control cabinet is connected to one side of the main machine section conveying device; the driving device drives the telescopic section transmission device to stretch out and draw back through chain transmission; one end of the telescopic section transmission device is a stretching end, and the other end of the telescopic section transmission device is a tail end; and a lifting mechanism is connected to the tail end of the machine frame. According to the extendable conveyor adjustable in butt-joint height, the relative height of the lifting mechanism and the machine frame as well as a tensioning force adjusting mechanism are adjusted in advance, the height of the extendable conveyor is adjusted to be matched with the height of a cargo conveying belt of a client, and accordingly, the problem that the height and length of the extendable conveyor are different from those of a loading and unloading platform is solved.

The invention discloses a heat dissipating device for packaging of a high-power semiconductor laser device. The heat dissipating device comprises a bottom plate, a base, and a heat dissipation moduleof a single tube laser chip. A first-level cooling channel liquid inlet pipe and a first-level cooling channel liquid outlet pipe are arranged inside the bottom plate; a final liquid inlet is formed in one side wall of the bottom plate and is communicated with one end of the first-level cooling channel liquid inlet pipe; and a final liquid outlet is formed in the other side wall of the bottom plate and is communicated with the first-level cooling channel liquid outlet pipe. In addition, the invention also discloses a heat dissipating method for packaging of a high-power semiconductor laser device. The heat dissipating method comprises seven steps. According to the invention, a micro-channel heat dissipation structure is formed by three levels of channels; with the third-level micro-channelstructure, the good cooling effect of the high-power multi-single-tube laser device is ensured; and on the basis of the second-level micro channel and the first-level micro channel, a problem of a height difference between the heat dissipating modules is solved, so that processing of the inclination angle is avoided and the uniform heat dissipation is guaranteed.

The invention discloses a rollable heating component for a ground or a wall. The rollable heating component comprises a heating plate and sockets, and the heating plate comprises a bottom layer. The rollable heating component is characterized in that the heating plate further comprises a decorative surface layer and a heating layer, and the decorative surface layer, the heating layer and the bottom layer are sequentially arranged from top to bottom. The decorative surface layer is a PVC coiled material floor layer, the decorative surface layer and the heating layer are fixedly bonded together, and the heating layer and the bottom layer are fixedly bonded together. The upper surface of the decorative surface layer is exposed when the decorative surface layer is used. The heating layer of the heating plate is an electrothermal film. The number of the sockets is two, the two sockets are divided into a front socket and a back socket according to different front-and-back positions of the sockets, and the front socket and the back socket are electrically connected with the corresponding electrodes of the electrothermal film of the heating plate respectively. The sockets are electrically connected with a power system through power supply lines, and the heating plate emits heat for heating after the heating plate is powered on.

The invention discloses an LED chip with an annular electrode structure and a method for preparing the LED chip. The LED chip is characterized in that a transparent conducting layer is arranged on a p-type GaN layer, a passivation layer is arranged on the transparent conducting layer, an annular tabletop is arranged on an n-type GaN layer, a p electrode is arranged on the transparent conducting layer, and an annular n electrode is arranged on the annular tabletop. The method for preparing the LED chip includes steps of (1), acquiring GaN-based epitaxial slices; (2), etching the annular tabletop by the aid of masks with annular structures; (3), forming the transparent conducting layer; (4), manufacturing the passivation layer; (5), corroding the passivation layer; (6), preparing the p electrode on the passivation layer on a surface of the p-type GaN layer and preparing the n electrode on the annular tabletop. The LED chip and the method have the advantages that the LED chip is providedwith the annular electrode structure, accordingly, the problem of height difference of existing p and n electrodes can be solved, wires are easy to weld, and the etching areas of active layers can bereduced; reflection effects can be realized by the metal electrodes, accordingly, light around the electrodes can be reflected, and the brightness can be improved.

The invention discloses an automatic jetty loading and unloading system, and relates the technical field of jetty container transportation. The automatic jetty loading and unloading system includes ajetty front transshipment system, a middle storage space transshipment system and a high storage space transshipment system, wherein the jetty front transshipment system comprises a first crane and horizontal transportation equipment; the horizontal transportation equipment comprises a first mobile platform and a second mobile platform; the second mobile platform is arranged on the first mobile platform, and is used for transshipment of a container between the front and middle of storage space of a jetty; the middle storage space transshipment system comprises a second crane; and the high storage space transshipment system comprises a third crane. According to the invention, by arranging the horizontal transportation equipment, a jetty front water transshipment system effectively solves the problem of height difference in a transfer area in the front of the jetty, realizes the horizontal transportation of the container, and has high transportation efficiency; the middle storage space and the high storage space can realize the container transportation through the relay of the cranes, which reduces costs and improves the utilization rate of the storage space of the jetty.

The invention discloses a levelling mechanism for an assembly-type wallboard and a levelling technology. The mechanism comprises a wallboard body. The back face of the wallboard body is connected to ahanging part through a fixing bolt, and the connection plate is fixedly arranged on the wallboard through an expansion bolt. The wallboard body is provided with a levelling plate, a thread connectionblock is arranged in the bottom end of a hollow thread pipe in a threaded mode, a screw head is fixedly arranged on the thread connection block, a fixing screw is arranged in a clamping thread groovein a threaded mode, and an inner rod is movably arranged in the middle of the hollow thread pipe. According to the levelling mechanism for the assembly-type wallboard, a lengthened hollow thread rodis used for rotating and screwing the fixing screw, and the problem that due to the narrow gap between the wallboard and the wall, the bolts are not easily fastened directly by hand is solved. The levelling plate is arranged in the mechanism, wallboards different in thickness and material can be limited and guided, and the difference of height is avoided. The invention further discloses the levelling technology based on the levelling mechanism for the assembly-type wallboard. The mechanism is easy to operate and worthy of popularization.

The invention discloses a movable ultrasonic stirring cleaning tank and method for repairing heavy metal contaminated soil. Multiple cavities separated by partition plates are sequentially arranged in a tank body in the axial direction. A stirring shaft penetrates the partition plates in sequence. A set of stirring blades are distributed in each cavity. A communicating hole is formed in each partition plate. The forming positions of the communicating holes and the positions of the communicating holes in the adjacent partition plates are distributed in a staggered manner. Baffling is formed when materials pass through the cavities in sequence. After the contaminated soil and a cleaning agent are mixed according to a certain proportion, the mixture is continuously fed into the tank body at a certain flow speed through a feeding port, cleaning is conducted for 30 min to 60 min under the ultrasound-stirring double effect, and therefore elution of heavy metal can be completed. The movable ultrasonic stirring cleaning tank is compact in structure, convenient to transfer, uniform in stirring, capable of working continuously and high in stirring efficiency.

The invention belongs to the field of floors and particularly relates to an adjustable sound-proof heating composite floor. The composite floor comprises a negative plate and a positive plate which are matched with each other, wherein each of the negative plate and the positive plate comprises a heat conducting layer and a decoration layer bonded on the upper surface of the heat conducting layer,side keels are arranged on two sides of the negative plate in the longitudinal direction, upper parts of the inner sides of the side keels are fixedly connected with the side walls of the heat conducting layers, and a clamp slot is formed in the top of each side keel; clamp strips are arranged on two sides of the positive plate in the longitudinal direction, each clamp strip is fixedly connected to the lower surface of the decoration layer, and the two clamp slots of the negative plate can be spliced with the clamp strips of the adjacent positive plate respectively; a central keel is arrangedin the center below the heat conducting layers of the negative plate and the positive plate in the longitudinal direction; and a heating pipe is arranged between the central keel and each side keel. According to the floor, the reinforcing keels are arranged, so that thermal deformation of the floor under heating can be effectively suppressed, and the problem of thermal stability of the floor is solved.

The invention relates to a transition section structure for underground tunnel access place and viaduct bridge connection and a construction method. The transition section structure comprises a transition section structure body extending longitudinally along a line, wherein the transition section structure body comprises a bottom plate and side walls located at two sides of the bottom plate; a lane plate used for supporting ballast bed structures is arranged in the transition section structure body and located above the bottom plate; the lane plate is arranged in a slope mode in the longitudinal direction of the line; and a lane plate structure is arranged in the transition section structure body to solve the height difference problem that the rail surface is higher than the ground, and the height of boundary rail surfaces between tunnels and roadbeds and between tunnels and bridges is enlarged and higher than the designed water level. Open-cut U-shaped grooves are directly adopted tobe provided with the lane plate structure to be connected with viaduct bridges, short roadbeds are omitted, composite foundations, bearing piles and other measures are arranged on the bottom plate ofU-shaped groove structures according to different geological conditions, the structural rigidity is improved, the problem of differential settlement caused by different structural rigidities is solved, and land acquisition of roadbed sections is reduced.

The invention discloses a high-speed motor rotor core manufacturing process, comprising the following steps: S1, providing a hydraulic machine, a laminating tool, a universal punching sheet and a folding and riveting punching sheet which is formed by punching on a punching machine; S2, lamination of layered iron cores: the to-be-pressed rotor core is divided into a plurality of layered iron coresaccording to the height and the like, and then the layered iron cores are placed on the laminating tool; S3, lamination of the iron cores: a first layered iron core is firstly arranged, then, a secondlayered iron core is placed, and the layered iron cores are horizontally rotated by 180 degrees to complete the lamination of the iron cores; S4, assembling of a welding tool: the welding tool is assembled on a platform, then, an end ring and the iron cores are sequentially placed, and nuts are used for locking; and S5, the end ring and a guide bar are welded, so that the rotor core is manufactured. The layered iron cores are laminated and are adjusted under the pressure of the hydraulic machine, so that the height error of the rotor core is reduced; the layered iron cores are still finishedin a stamping die, and manufacturing of the high-speed motor core can be realized in a high-efficiency and high-quality mode.

The invention discloses a cutting table for children garment production and design, and relates to the technical field of cutting tables. The cutting table includes a translational cutting table, an extension cutting table, a hinge, a storage box, a connecting rod, a deformation bracket rod, an adsorption machine, a rotating shaft, a folding ruler, a lifting rod, a buffer base and a universal self-locking wheel, the inner top wall of the translational cutting table is provided with cavities formed at equal distances, the inner middle of the translational cutting table is provided with an air suction passage, and the inner bottom wall of the translational cutting table is provided with the adsorption machine. According to the cutting table for the children garment production and design, itis effectively ensured that cut materials are firmly adhered to the translational cutting table, the fixation of children garments is achieved, better flatness is obtained, input of consumptive materials is saved during cutting, convenience is provided for the adjustment of the multi-angle measurement work of the garments, great convenience is provided, and to-be-cut garments are neatly and orderly placed on the translational cutting table.

The invention discloses a concrete string barrel structure and a concrete-filled steel tube pouring construction method, and relates to the technical field of steel-concrete structures. The concrete string barrel structure comprises a string barrel and a fixing plate, wherein the string barrel and the fixing plate are connected through screws; the string barrel consists of a string tube, a hopper, a lifting ring, a connecting sleeve, a connecting plate, screw holes and screws; the connecting sleeve is arranged at the bottom of the hopper; the upper part of the hopper is connected with the lifting ring; the connecting plate is arranged on the periphery of the string tube; and a plurality of screw holes are symmetrically formed in the connecting plate. According to the concrete string barrel structure and the concrete-filled steel tube pouring construction method, through the improvement of the construction method and the concrete string barrel structure, the asynchronous construction of a steel frame-reinforced concrete core tube structure and high-quality concrete-filled steel tube pouring are realized, and the problem of concrete-filled steel tube pouring caused by the height difference between the core tube and an outer frame and the height of the steel tube is solved.

The invention provides a toilet base plate. The toilet base plate mainly comprises a dry area base plate, a wet area base plate and a drainage device, wherein the drainage device is arranged between the dry area base plate and the wet area base plate and used for draining water. According to the toilet base plate, the drainage device is arranged between the dry area base plate and the wet area base plate, and meanwhile, a drainage port is formed in the side edge of the base plate, so that the requirement for flat connection of the toilet ground is met, the thickness of the base plate does not need to be increased or increased, more market requirements can be met, and the toilet base plate is suitable for newly-built toilets and renovation of toilets.

The invention discloses an adjustable transmission rack for feeding of cutter, which comprises a pedestal, a support body and an elevating assembly, wherein the elevating assembly comprises a rack body, lugs are formed on two sides of the rack body, a roll shaft is fixed between the lugs, a screw is vertically fixed on the bottom surface of the rack body, the screw is arranged through a through hole on a crossbeam of the support body to arrange the rack body on the top of the crossbeam, a nut which can adjust vertical elevating of the screw is fixed on the screw tightly close to the upper part of the crossbeam, the elevating of the roll shaft fixed on the rack body is realized through adjustment of the height of the nut, so as to change the height of steel arranged on the roll shaft and solve the problem of size difference of the steel and height difference between the transmission rack and the cutter.

The invention discloses an assembling and welding method for a space bent pipe of an all-terrain vehicle and a welding tool. The assembling and welding method comprises the following steps: (1) assembling parts of the space bent pipe; and (2) conducting welding to form the space bent pipe. The welding tool comprises a main plate for conducting multi-point supporting on the bottom of the space bent pipe, and a positioning plate which is obliquely installed on the main plate and used for supporting an upwarp section of the space bent pipe; and part sections forming the space bent pipe are fixedly positioned on panel surfaces of the positioning plate and the main plate respectively. When welding needs to be conducted to form the space bent pipe, the part sections forming the space bent pipe are fixedly positioned on the panel surfaces of the positioning plate and the main plate respectively to be supported, thus it is guaranteed that no height difference exists in supporting of the part sections forming the space bent pipe, meanwhile, repeated adjustment is not needed, the problem that height difference exists in the different part sections of the space bent pipe is solved, and it is guaranteed that the overall space position precision of the space bent pipe which is formed after welding is conducted meets the design requirement.

The invention discloses an improved pig loading stand. The improved pig loading stand comprises a base, wherein two symmetrical triangular brackets and two symmetrical hoists are arranged on two sides of the base, a lifting channel barrier and a weighing channel are further arranged on the base, one end of the lifting channel barrier is movably connected with the weighing channel, and the bottom of the weighing channel is fixed on the base; two symmetrical guide wheels are arranged at the tops of the triangular brackets, steel wire ropes are additionally arranged and wind around the guide wheels, one end of each steel wire rope is connected with the corresponding hoist, and the other end of the steel wire rope is connected with the other end of the lifting channel barrier. The improved pig loading stand integrates moving, lifting and weighing, finishes weighing and pig loading in one step in a pig loading process, can be lifted and dropped as required to be adapted to different heights of vehicles, and solves the problem of different heights of vehicle platforms when butting with a vehicle. The pig loading process is not limited by locations by means of the movable function of the stand, the working efficiency is improved greatly, and the labor intensity of a worker is reduced.

The invention relates to a PVC (Polyvinyl Chloride) latch floor board which comprises a main body part, slot seat parts and corresponding elastic double-tongue parts; the main body part is a quadrilateral prism body, wherein the shape of the upper surface of the main body part corresponds to the quadrilateral shape of a walking face of the PVC latch floor board; each slot seat part of the PVC latch floor board is a part which can be mutually latched and connected with the adjacent and corresponding elastic double-tongue part of the PVC latch floor board from the lower side when the PVC latch floor board is used; and each elastic double-tongue part of the PVC latch floor board is a part which can be mutually latched and connected with the adjacent and corresponding slot seat part of the PVC latch board when the elastic double-tongue part is used. When the PVC latch floor board is used, mutually contacted limits in four directions are arranged between every two adjacent PVC latch floor boards so that the PVC latch floor boards are firmer to latch and not easy to fall off. When the PVC latch floor board is paved, the active pavement of one PVC latch floor board to a plurality of PVC latch floor boards can be finished just by applying an action force in one direction to the paved floor boards, and thus simple, convenient and rapid effects can be achieved.

The invention provides a forming method of a trench isolation structure and a forming method of an image sensor, and the method comprises the steps: providing a substrate which comprises a logic region and a pixel region, and sequentially forming a buffer layer, an etching stop layer and a hard mask layer on the substrate; forming a first groove and a second groove with the same depth on the logic region and the pixel region; the second groove of the pixel area is covered, the first groove of the logic area is continuously etched to form a third groove, the third groove is the extension of the first groove, and the depth of the third groove is larger than that of the second groove; filling a protective layer in the third groove and the first groove, wherein the protective layer covers the hard mask layer; and removing the hard mask layer and the protective layer on the hard mask layer by adopting an etch-back process, wherein the etch-back process is stopped on the etching stop layer.

The invention discloses a manufacturing method of a grid electrode. The method comprises the following steps of providing a substrate, forming at least two grid electrodes on the substrate, forming ahard mask layer on each of the at least two grid electrodes, and forming a sidewall on a peripheral side of each grid electrode; generating metal silicide on the substrate; thinning the sidewall; depositing a contact etching stop layer on the substrate; depositing a low-K silicon oxide layer on the contact etching stop layer; grinding the low-K silicon oxide layer, the contact etching stop layer,and the hard mask layer till that top ends of the at least two grid electrodes are exposed. After the metal silicide is generated, a complicated photoresist etchback step is replaced by grinding so that a manufacturing process is simplified. At the same time, because the photoresist etchback step is not required, a problem of different grid electrode heights caused by the photoresist etchback stepis solved, and a yield of a manufacturing process is improved.

The invention discloses a steel wire rope adjusting device. The device comprises a support, a steel wire rope pressing plate, a sliding chute, a positioning plate, an adjusting nut, an adjusting screw, a guide rod, a steel wire rope fixing bolt pair, a positioning bolt pair and a nut fixing bolt pair. When the steel wire rope adjusting device is assembled, the lower plane of the support is fixedly arranged on an installation plane, the ends of steel wire ropes pass through the middle parts of the support and the steel wire rope pressing plate, the steel wire rope fixing bolt pair is tightened, the steel wire rope pressing plate is put in the middle of the support, the positioning plate is put in and the positioning bolt pair is tightened. When the steel wire ropes need to be adjusted, the tightened positioning bolt pair is loosened and the positioning plate is taken away, and the operation end of the adjusting screw is clamped by utilizing special tools, such as a wrench, to be rotated, so that the adjusting nut, the steel wire rope pressing plate and the steel wire ropes can move toward the needed adjustment directions together. The problem of height difference or inclination, caused by inconsistence of the length of the steel wire ropes due to various reasons, such as machining deviation and installation deviation of a drum and characteristic deviation of the steel wire ropes, of a lifting appliance can be solved by adopting the steel wire rope adjusting device.

The invention relates to a connecting device for a ceiling plate and a using method of the connecting device. The connecting device comprises a fixing plate rotatingly installed on a main body structure, a plurality of adjusting rods, wherein the length of each adjusting rod is adjustable, and one end of each adjusting rod is rotationally connected to the fixing plate; and a connecting plate which is rotationally connected to the other ends of the adjusting rods and used for being fixedly connected with a ceiling plate, wherein the connecting plate is made horizontal by adjusting the lengths of the adjusting rods. The problem that the large height difference possibly exists between the adjacent ceiling plates is effectively solved, by leveling the connecting device, the connecting device is horizontal, the large height difference between the adjacent ceiling plates is prevented, and the construction quality is guaranteed.

The invention discloses an assembled hollow pier based on end plate welding and a construction method of the assembled hollow pier. The assembled hollow pier comprise pile foundations, cast-in-place bearing platform, prefabricated pier columns and prefabricated cap beams and is characterized in that the cast-in-place bearing platform is formed at the upper ends of the pile foundations in a cast-in-place manner and horizontally connected with the pile foundations; the prefabricated pile columns are vertically connected onto the cast-in-place bearing platform, each prefabricated pile column comprises an embedded pier column section partially embedded into the bearing platform and prefabricated pier column sections, and the prefabricated pier column sections are sequentially vertically weldedupwards to reach a set height and then connected with the lower end of the corresponding prefabricated cap beam. The assembled hollow pier has the advantages that the prefabricated pier column sections and the embedded pier column sections are prefabricated in a centralized manner, industrial production can be achieved, and construction quality can be increased; the embedded pier column sectionsare embedded by the aid of the cast-in-place bearing platform, pier column height differences in practical engineering are avoided by embedding depth change and modularizing prefabricated pier columnlengths, and modularized prefabricated pier column lengths are achieved.