195results about How to "With rotation function" patented technology

The invention discloses a replaceable modularized comb-like seismic mitigation and isolation bearing and a preparation method thereof, which belong to the technical field of bridge bearing. The replaceable modularized comb-like seismic mitigation and isolation bearing is mainly characterized by comprising a bearing main body, wherein an upper bearing plate and a lower bearing plate are arranged on the bearing main body; a seismic reduction and energy consumption module, which is formed by a seismic reduction and energy consumption base and a seismic reduction and energy consumption plate, is arranged on the surrounding of the upper bearing plate; the seismic reduction and energy consumption base is connected with the upper bearing plate through a first bolt; a seismic reduction and energy consumption module baffle matched with the seismic reduction and energy consumption module is arranged on the surrounding of the lower bearing plate; the seismic reduction and energy consumption module baffle is connected with the lower bearing plate through a second bolt; and a trapezoidal comb whose tooth form is matched with the shape of the seismic reduction and energy consumption plate is arranged on the seismic reduction and energy consumption module baffle. The replaceable modularized comb-like seismic mitigation and isolation bearing disclosed by the invention is advantaged that fragile parts and energy consumption parts are modularized in case of an earthquake, the seismic mitigation and isolation bearing is conveniently and rapidly replaced, the cost needed to repair the bearing is reduced, and manpower, material and financial resources of the replaceable modularized comb-like seismic mitigation and isolation bearing are saved when being compared with a support which needs to be integrally replaced.

The invention relates to a rotary-type seal-body sealing device in a self-help receipt machine, which structurally comprises a seal-body installing plate, a seal module and an elevating-type sealing-driving mechanism, wherein the seal module is limited in the limiting hole of the seal-body installing plate, and the seal module and the seal-body installing plate are in sliding fit along a vertical direction by means of the elevating-type sealing-driving mechanism. The key is that the device also structurally comprises a seal-body rotating-driving mechanism, and the seal module has the rotational degree of freedom relative to the seal-body installing plate by means of the seal-body rotating-driving mechanism. The device is used by being matched with a printer in the self-help receipt machine, has a rotating function and can be used for controlling a seal to correspondingly rotate according to the different paper-out directions of different paper, so that the direction of the seal which is sealed onto the paper is always upward, and therefore the problem of disordered seal marks is effectively solved.

The invention relates to an elastic material cutting transverse state converter on a production line of disposable sanitary articles, which comprises a suction disc mechanism and a cutting mechanism, wherein the suction disc mechanism comprises a transverse state conversation main shaft, a positioning disc, an air suction ring, a rotating disc support seat and a rotating disc, eight suction discs are uniformly distributed in the radial direction of the rotating disc through bearings and hollow suction disc shafts, the cutting mechanism comprises a rotating cutting main shaft, a rotating cutting middle bearing seat, a rotating cutting fixed bearing seat and a cutter assembly fixing plate, four groups of cutter assemblies are uniformly distributed on the outer side surface of the cutter assembly fixing plate, and a belt transmission mechanism is arranged on the inner side surface of the cutter assembly fixing plate. The device of the invention has the advantages of compact structure and reasonable design, and realizes full-automatic operation.

Disclosed are a well completion sand prevention process and sand prevention strings thereof. The process comprises the following steps of assembling an inner string and an outer ring; mounting a hydraulic rotation device; connecting a top packer and a setting tool; performing function testing; drilling down to a set position; performing completion fluid replacement, gel breaking fluid replacement, gel breaking and well flushing; performing ball feeding, setting the top packer and examining the sealing performance; pulling out a feeding drill and the inner string. The sand prevention strings comprise the outer string and the inner string, the inner string is arranged inside the cavity of the outer string and comprises an insertion seal, a positioning head and a flushing pipe, and the outer string comprises a sealing bore, a screen pipe and a blank tubing; the tops of the blank tubing and the flushing pipe are connected with the top packer, and the top packer is connected with the feeding drill through the setting tool; the outside of the outer string is also provided with the hydraulic rotation device, and the inside of the inner string is provided with a fluid path for the driving fluid of the hydraulic rotation device to pass through; the hydraulic rotation device is connected with a surface pump through the fluid path.

This invention relates to a high precision positioning and accessing system for waste nuclear material. Wherein, for improvement while keeping original workshop and devices, arranging a frequency-changing system on the dual-speed motor for continual regulation within 0~50Hz; adding a band-brake power controlled by a PLC digital interface for single band-brake release; and measuring position of the sling by two laser rangers and one rotary coder. This invention reduces nuclear radiation to operators and workers and shaking amplitude of the trash receptacle, increases crane position precision to 1mm, and improves warehouse utilization rate.

The invention discloses a car seat assembly operating platform. The operating platform comprises an operating platform frame (11), a rotary disk (7) and a rotary station limiting mechanism (3) and is used for the assembly of a car seat assembly (1), wherein the rotary disk (7) is provided with a rollover chassis (6); the rollover chassis (6) is provided with a rollover disk (5); and the car seat assembly (1) is fixed on the rollover disk (5) through a pneumatic clamping mechanism (4). The invention also relates to an operation method of the car seat assembly operating platform. By adopting the technical scheme of the invention, the installation operating platform of the car seat can have the functions of rotation, rotational positioning and rollover, each surface of the car seat can be assembled on one operating platform, the assembly and production efficiency of the car seat can be greatly increased and the labor intensity of the operator can be reduced.

The invention belongs to the technical field of computer peripheral hardware equipment and particularly relates to a camera with a rotation function. The camera with the rotation function comprises a support rod base, a base, a thread groove and a connecting rod, wherein the thread groove is arranged in the bottom surface of the support rod base, the top surface of the base is fixedly connected to a bearing, one end of the connecting rod is fixedly connected to the bearing, and a screw thread is arranged on the other end of the connecting rod and is matched with the thread groove so as to fix the support rod base. According to the camera with the rotation function, the camera can be fixed at a required place in use so as to prevent the camera from being broken due to careless operation, and furthermore, the orientation of the camera can be adjusted, so that the camera is very convenient.

The invention discloses a medical bed with a rotation function. The medical bed comprises a square-box-shaped lower bed board (hereinafter referred to as a lower bed board), a square-box-shaped upperbed board (hereinafter referred to as an upper bed board), a bedstead, a left bed head, a right bed head, bed legs, casters and an air pump. A lower air cushion and an upper air cushion are arranged above the lower bed board, and the upper bed board is arranged above the upper air cushion; left and right frames of the upper bed board and the lower bed board are provided with connecting devices; arotation device is arranged on a transverse beam of the right bed head, and a control panel is arranged above the left bed head; angle positioning devices are connected with a transverse beam of the left bed head. The medical bed has the advantages that two sunken locations which are similar to the shapes and the thicknesses of human bodies are arranged inside the lower air cushion and the upper air cushion, square through holes are formed in the upper half portion of the lower air cushion, and shaking cushions can be replaced by the aid of the square through holes; circular through holes areformed in the upper portions of the upper bed board and the upper air cushion; the lower bed board, the lower air cushion, a patient, the upper air cushion and the upper bed board can be rotationallycombined with one another at treatment locations, accordingly, the whole body of the patient can be supported, the patient can be in comfortable posture and can be prevented from being injured, and the medical bed is favorable for sputum drainage and sputum excretion treatment.

The invention discloses a double-concentric controllable-speed cutter using abrasive jets and solves the problem that an existing cutter is complex in structure and difficult to process. The cutter comprises a cutting nozzle, eccentric spouts, a main mandrel, an outer shell, a friction speed-limiting ring, and a pneumatic shell. The cutter is characterized in that the a pore axis of each spout mounting channel is mutually perpendicular to the axis of the cutting nozzle and has an offset distance e relative to the cutting nozzle, and an axis of a straight cylindrical segment of a pore of each spout and the axis thereof intersect to form an eccentric angle alpha; the main mandrel and the pneumatic shell are provided with corresponding sector openings, respectively, so that flow area is periodically changed during a rotation of the main mandrel, pressure is periodically changed, and speed monitoring is achieved; in addition, whether to mount the friction speed-limiting ring or not and whether to use the eccentric spouts to precisely control nozzle speed or not can be selected according to different displacements. The cutter is available for cutting in a string having an inner diameter 62mm and is controllable in speed, high in cutting efficiency, low in manufacturing cost and simple in structure.

The invention discloses an intelligent laundry rack and relates to the technical field of intelligent laundry racks. The intelligent laundry rack comprises a suspended ceiling box, a lifting seat anda rotary rack and is characterized in that two sides of the bottom of the suspended ceiling box are connected with the lifting seat through shear type telescoping mechanisms, and the bottom end of thelifting seat is rotatably connected with the top end of the rotary rack; the bottom end of the rotary rack is provided with a cylindrical inner cavity, a fluted disc is fixed to the inner wall of thecylindrical inner cavity, a rotation motor is fixed to the bottom end of the lifting seat, and a gear meshing with the fluted disc is fixed to the output end of the rotation motor; an air duct is fixed to the bottom of the cylindrical inner cavity, and the bottom end of the air duct is provided with an air inlet. The intelligent laundry rack has the advantages that the laundry rack is provided with the rotary rack with a lifting function, the lower end of the rotary rack is provided with the air duct, a circle of downwardly inclined air outlets is arranged in the peripheral side of the air duct, clothes hanger hanging rods are distributed in a stepped manner, air discharged from the air outlets can be blown towards clothes aired around, high drying efficiency is achieved, the clothes canbe rotated to change directions during airing, and the clothes can be sufficiently and evenly dried by sunlight.

The invention discloses a long-fiber reinforced thermoplastic resin composite material forming device and technology, and belongs to the field of long-fiber reinforced thermoplastic resin composite materials. The problem that in the prior art, the long-fiber reinforced thermoplastic resin composite materials are poor in wettability, high in breakage rate and poor in reliability is solved. The long-fiber reinforced thermoplastic resin composite material forming device comprises an airflow splitting device, mechanical unfolding rollers and a fiber wetting forming device. The airflow splitting device, the mechanical unfolding rollers and the fiber wetting forming device are arranged in sequence. The fiber wetting forming device comprises a molten resin impregnation mold. Opposite press rollers and tension rollers are arranged in sequence and are arranged inside the molten resin impregnation mold. The long-fiber reinforced thermoplastic resin composite material forming device can improve the wettability of the long-fiber reinforced thermoplastic resin composite materials, reduce the breakage rate and improve the reliability.

The invention discloses an agricultural big data analysis apparatus. The apparatus comprises an analysis apparatus body and an agricultural big data analysis module; a fixed handle is arranged on oneside wall of the analysis apparatus body; and the agricultural big data analysis apparatus comprises an agricultural big data collection module, an agricultural big data input module, an agriculturalbig data processing module, an agricultural big data output module and an agricultural big data security encryption protection module. The agricultural big data analysis apparatus is simple in structure and easy in operation, can be cooled, and is high in cooling efficiency, convenient to carry and good in sealing performance; an involved system can perform collection, input, analysis processing and output on the agricultural big data more conveniently, so that scheduling and management of the agricultural big data-based system are facilitated; and the agricultural big data can be subjected tosecurity protection conveniently, so that data leakage is prevented and the security is high.

The invention discloses a two-in-one device for audio transmission of a TWS earphone and a Bluetooth speaker. The device comprises a sound box and a TWS earphone. The loudspeaker box comprises a loudspeaker box shell, a charging box, a charging box PCB, a loudspeaker box control PCB, a loudspeaker base cover, a loudspeaker base, a loudspeaker box loudspeaker and a rotating cover. The charging boxis rotationally connected with the sound box shell through a pin shaft; wherein a connector of the loudspeaker seat cover is connected with the rear end of the charging box, a PIN on a PCB of the charging box is in contact connection with a conductive contact of a TWS earphone placed in an earphone groove of the charging box, a light touch switch is connected to the loudspeaker box control PCB, and a switch contact body is arranged on the loudspeaker seat cover. The multifunctional TWS sound box is convenient to carry and rich in function, the TWS earphone can be charged, the earphone and thesound box can be combined to form a Bluetooth sound box, wireless audio playing is achieved, the earphone can be rotated into the sound box shell to be stored and protected, in addition, a switch of the sound box can be controlled through rotation, and operation is convenient.

The invention relates to the technical field of valve machining and discloses a valve machining platform with a rotary function. The valve machining platform comprises supporting legs. A supporting bottom plate is fixedly connected to the tops of the supporting legs. A driving box is fixedly connected to the bottom of the supporting bottom plate. A motor is fixedly connected with the bottom of the inner wall of the driving box. An output shaft of the motor is fixedly connected with the axis of a first gear. The first gear is engaged with a second gear. The second gear is fixedly connected to the surface of a rotary rod in a sleeving mode. According to the valve machining platform with the rotary function, by arranging the motor, the first gear, the second gear, the rotary rod, a first bearing, a second bearing, a cavity, a rotary block and a third bearing, valves can complete rotation, thus, the valve machining platform can have the rotation function, and the situation that positions need to be adjusted by manual rotation and fixing then is avoided; and time is saved, and the operation progress is accelerated.

The invention relates to mixing equipment for micro-steel fiber reinforced concrete applied to a lab. The mixing equipment comprises a mixing assembly and a feeding assembly; the mixing assembly comprises a main rack, a mixing bucket, a mixing shaft, a shaft rotating device and a bucket rotating device; and the feeding assembly comprises a secondary rack, a feeding tray, a feeding cylinder and a tray rotating device. The mixing equipment for the micro-steel fiber reinforced concrete applied to the lab, provided by the invention, can make micro-steel fibers be uniformly distributed in the concrete and can save materials so as to obtain high-quality micro-steel fiber reinforced concrete.

The invention discloses a rotary spraying-flushing device lifted by water power. An outer sliding sleeve is sleeved on an inner sliding sleeve and can slide up and down along the inner sliding sleeve; a bearing is arranged on the outer surface of the water outlet end of the outer sliding sleeve; a rotary spraying ball is fixed at the outer side of the bearing; and a plurality of irregular holes are arranged on the side wall of the rotary spraying ball. The rotary spraying-flushing device lifted by the water power has the advantages that: 1, when water is sprayed, a sleeve pipe can be driven by the water power to extend upwards, so that the sleeve pipe has the function of increasing the height; and an impeller of the rotary spraying-flushing device and gaps on a spraying nozzle can cause the water flowing through a spraying pipe to obtain a rotation function; 2, the flowing route in the spraying pipe can be lengthened by the sleeve pipe, so that the rotary spraying-flushing device has the advantage of low energy consumption; 3, the rotary spraying-flushing device can achieve thorough flushing and can flush parts with any angle, and the cleaning efficiency is excellent; and 4, the rotary spraying-flushing device is compact in structure, can be driven by cleaning solution and has the advantages of self-lubrication and self-rotation.

A tower crane with the function of adjusting the spatial position of a lifting component omnidirectionally belongs to the technical field of tower cranes. The tower crane comprises two parallel lifting mechanisms and a trolley with a slewing gear; the two parallel lifting mechanisms are installed back and forth on balance arms of the tower crane in the axis direction; the trolley is connected to a lower chord member of a crane jib, and slides along the crane jib; lifting steel wire ropes on the two lifting mechanisms are connected to wedged joints of the crane jib through a guide rope pulley block on a tower head, a lifting weight limiter, a trolley center guide rope pulley block, a slewing beam guide pulley block on the trolley and a lifting pulley block as well as a guide pulley block of the slewing beam, a central guide rope pulley block and two anti-twisting device pulleys at the end of the crane jib; the lift or decent of the lifting pulley blocks is controlled through the lifting mechanisms. In the invention, the + / - 90 DEG rotation function of the lifting component can be achieved, and the spatial position of the lifting component can be adjusted omnidirectionally; different lifting components can be rotated and adjusted in place on a construction side, and the efficiency and construction quality are improved in the lifting process.

The invention provides a mechanical cleaning device for food processing, which relates to the field of food machinery. The mechanical cleaning equipment for food processing includes a fixed bottom plate, the top of the fixed bottom plate is fixedly connected with a shock-absorbing buffer device, and a fixed plate is arranged above the shock-absorbing buffer device, and the right side of the fixed plate is fixedly connected with a support horizontal plate, the top of the fixed plate is provided with a semicircular groove, the interior of the semicircular groove is provided with a cleaning roller, the inner wall of the semicircular groove is fixedly connected with two connecting blocks, and the two connecting blocks Axles are arranged between the blocks. The mechanical cleaning equipment for food processing, when the cleaning roller rolls and cleans the vegetable and fruit raw materials inside, the roller can be driven to rotate when the vegetable and fruit roll, which effectively reduces the direct contact between the cleaning roller and the vegetable and fruit raw materials, effectively reducing the The friction between the fruits and vegetables and the cleaning roller when they are rolling reduces the damage of the raw materials of fruits and vegetables and improves the preservation time of fruits and vegetables.

The invention provides a flexible welding workstation of a rectangular flange intelligent robot. The flexible welding workstation comprises a rotary workbench and a welding robot located beside the rotary workbench, two sets of flexible tools capable of horizontally rotating along with the rotary workbench are symmetrically arranged on the rotary workbench, and for each set of the flexible tool, electric bidirectional sliding tables with bidirectional synchronous linear displacement are arranged on the transverse and longitudinal central lines of a rectangular framework respectively; the two ends of each electric bidirectional sliding table are correspondingly provided with sliding plates with bottom plates, a fixing plate is arranged on the center side, adjacent to the rectangular frame,of each bottom plate, and each fixing plate is provided with a rotary air cylinder; and a pushing air cylinder is arranged on the center side, away from the rectangular frame, of each bottom plate, and a piston rod of each pushing air cylinder is connected to a movable pushing plate. According to the flexible welding workstation, automatic splicing and welding manufacture of the rectangular flangecan be realized, the rectangular flanges with different specifications and sizes can be automatically spliced, the working efficiency is high, the size precision of the flange can be guaranteed, andthe labor intensity of workers is reduced.

The invention discloses a two-in-one electrical eyelash brush which comprises a brush body, a rotatable and vibratile two-in-one motor, a power supply, a switch and a case. Based on a use direction, the power supply and the rotatable and vibratile two-in-one motor are fixedly arranged inside one end of the case, and the power supply drives the rotatable and vibratile two-in-one motor electrically connected with the same. The power output end of the rotatable and vibratile two-in-one motor is fixedly connected with one end of the brush body, and a rotatable axial stop seal at the other end of the brush body is located inside the other end of the case. The switch is fixedly arranged on the external wall of the case and can control the rotation of the rotatable and vibratile two-in-one motor. The brush body can be driven by the rotatable and vibratile two-in-one motor, so that the brush body has both functions of rotation and vibration. After the two-in-one electrical eyelash brush is used, the eyelash can become longer and more even. Moreover, the invention has time saving, occupied space reduction and more convenient use.

The invention discloses a shuttle vehicle layer-changing elevator for a three-dimensional warehouse and a shuttle vehicle transportation device. The shuttle vehicle layer-changing elevator comprises athree-dimensional supporting frame and a vehicle carrying device used for carrying a shuttle vehicle. A lifting driving piece is arranged on the three-dimensional supporting frame, and the lifting driving piece is used for driving the vehicle carrying device to move in the vertical direction. The vehicle carrying device is located in the three-dimensional supporting frame and comprises a main frame structure and a rotatable vehicle carrying structure arranged in the main frame structure. The shuttle vehicle layer-changing elevator for the three-dimensional warehouse has the lifting and rotating functions at the same time, can be suitable for a bidirectional shuttle vehicle, matched three-dimensional goods shelves and roadways are easy to arrange, and the bidirectional shuttle vehicle cantransport goods between different height layers of the same three-dimensional goods shelf and between different three-dimensional goods shelves.

The invention discloses a rotary display screen, which belongs to the technical field of computers. The rotary display screen comprises a display screen, a base, a connecting shaft, a hollow cylinder, a groove and a convex part, wherein the groove is formed in the inner wall of the hollow cylinder; the convex part is arranged on the connecting shaft; the display screen is arranged on the connecting shaft; the connecting shaft is arranged in the hollow cylinder; the convex part is clamped in the groove; the hollow cylinder is arranged on the base; and the position of the groove corresponds to that of the convex part. The rotary display screen has the beneficial effects of easiness in manufacturing, compact structure, rotating function, and realization of checking of contents on the display screen from different angles without adjusting an entire computer.

The invention discloses an X-ray tube with a cathode and an anode which have rotation functions. The X-ray tube comprises a cathode, an anode, a vacuum tube and a driving device, wherein the anode and the cathode are both arranged in the vacuum tube, the vacuum tube comprises a vacuum cover, a cathode fixing tube and an anode fixing tube, a driving device is arranged in each of the cathode fixing tube and the anode fixing tube and is connected with a coil, an anode handle of the anode is connected with the driving device by a rotation part, and a cathode root of the cathode is connected with the driving device. In the X-ray tube provided by the invention, the cathode and the anode both have the rotation functions, a target arranged in the anode is bombed through an electron beam generated by a tungsten filament of the cathode so as to high-efficiently generate X-ray, and the X-ray radiates outwards through an arbitrary protruding position; and moreover, the cathode and the anode simultaneously rotate, and the purpose of rotary radiation can be achieved. Therefore, the X-ray tube provided by the invention is simple in structure and high in working efficiency, is convenient to use, can operate in no need of labor consumption, and can be applied to various occasions of industrial X-ray machines.

The invention discloses an impact testing device of an automobile seat. The impact testing device of the automobile seat comprises a testing table, a stand column, a pendulum rod and a pendulum. The stand column is fixed on the testing table, the upper end of the pendulum rod is hinged on the upper portion of the stand column through a shaft, and the pendulum is fixed on the lower end of the stand column. The pendulum is formed by a pendulum body, a counterweight block, a stiffness adjustment mechanism and a punch mechanism. The stiffness adjustment mechanism is composed of a piston rod, a spring and a counterweight block, a step hole is arranged at the center of the pendulum body, a spring is arranged at the rear end of the step hole, the piston rod is arranged at the front end of the step hole and the front portion of the counterweight block is connected withthe rear end of the step hole in a threaded mode. The punch mechanism is formed by a ball head rod and a punch head, the rod portion of the ball head rod is connected inside the piston rod in a threaded mode, and the punch head and the ball head portion of the ball head rod form a rotating pair. The impact testing device of protecting board of automobile seat can simulate a comprehensive action effect of size, direction and acting time of the action force of a safe belt to a protecting board during a front impacting process.

The invention relates to a combined vehicle, combined units (1 and 2) and a combined connector (4) thereof. Either combined unit of the combined vehicle comprises a vehicle body frame and two wheels (6) respectively mounted in parallel on a left axle fixing plate and a right axle fixing plate of the vehicle body frame; and parallel transmission rods (14) with gears are mounted on a bearing frame (16) at the bottom of the vehicle body frame and drive flywheels or gears on the two wheels (6) to rotate by chain transmission. Connecting plates (7 and 8) for connecting with the combined connector (4) are respectively arranged in the front or / and at the rear of the vehicle body frame, and the combined connector (4) comprise a fixed connecting plate, a direction steering shaft capable of rotating relatively to the fixed connecting plate, an upper-and-down sliding shaft and a movable connecting plate capable of rotating around the upper-and-down sliding shaft. The combined connector can rapidly adopt a tread driving mode and a power driving mode of the combined vehicle formed by combining at least two combined units and is easy and economic, random to use, convenient to stop, suitable for city and countryside and convenient for the public to grasp.

The invention relates to the technical field of welding platforms, and discloses a mechanical welding platform with a rotating function. The welding platform comprises a plurality of supporting legs,wherein a mounting seat is fixedly connected to the tops of the supporting legs, a motor is fixedly connected to the bottom of the mounting seat, a gear disc is fixedly connected to one end of an output shaft of the motor, two first positioning rods are fixedly connected to one side of the mounting seat, a sliding seat is movably connected to one sides of the first positioning rods, a welding mechanical arm is fixedly connected to the upper surface of the sliding seat, and a connecting block is fixedly connected to the bottom of the sliding seat. According to the welding platform, the weldingmechanical arm on the sliding seat can be driven to move backwards through a threaded block, so that a workpiece on the fixed seat rotates without hindrance, the service life of a device is prolonged,meanwhile, workpieces of different sizes can be clamped through a first clamping plate and a second clamping plate, the flexibility of the device is improved, and the threaded block can be kept stable in the moving process through a spring, and therefore the threaded block is prevented from deviating.

The invention relates to the technical field of cavitation water jet surface strengthening, and specifically relates to a clamping device for a cavitation water jet surface strengthening treatment test. The clamping device comprises a horizontal control platform capable of moving along a XY plane, a first shaft extending along a Z shaft and being capable of ascending and descending along the Z shaft, a second shaft arranged above the first shaft and being capable of rotating along an axis line of the second shaft, a third shaft capable of rotating relative to the second shaft in a XZ plane orYZ plane, a fourth shaft capable of rotating relative to the third shaft in the XZ plane or the YZ plane, and a fifth shaft connected with the fourth shaft and being capable of rotating along an axisline of the fifth shaft, and the upper end of the fifth shaft is connected with a clamping tool for clamping a test piece. The clamping device can adjust the position and angle of the test piece and has a rotation function, so as to conveniently perform cavitation water jet strengthening treatment on a test piece with a through structure of a nuclear station pressure container.