94results about How to "Advance smoothly" patented technology

A capsule type medical device is of a type of a capsule type medical device that is introduced inside the living body to gather in-vivo information, and comprises a capsule shaped casing; an in-vivo information acquisition device for acquiring the in-vivo information; a communication device for sending the in-vivo information acquired by the in-vivo information acquisition device to outside of the living body by wireless; at least one pair of first electrodes provided in a vicinity of one end along an axis of the casing for giving electric stimulation to body tissue in the living body; a first current control device for sending current to the first electrodes; and an interelectrode distance variation device for changing a distance between the electrodes.

The invention discloses a construction method of a multi-point whole incremental launching steel box girder, which belongs to the field of bridge engineering. The construction method uses a dental plate with a tooth socket, which is arranged on a steel box girder and a guiding beam web plate, a jacking force is supplied by an incremental launching jack, wherein a piston rod of the incremental launching jack is equipped with a slider, on which a spinous block with an inclined plane and a control spring are arranged, the inclined plane is arranged on the side of the incremental launching jack, the steel box girder and the guiding beam are applied with the jacking force through the push travel of the incremental launching jack, and the spinous block withdraws from the tooth socket during the return to enter into a next push travel. The construction method also supplies the support and adjusts the elevation of corresponding points through lifting-up the jack, simultaneously the incremental launching jack and the upper portion of the incremental launching jack are all equipped with a displacement sensor and a pressure sensor to collect information, thereby controlling an incremental launching process. The construction method has less consumption of steel material, a support reaction and a thrust force are capable of being controlled, and the problem of the rotation angle of the steel box girder is capable of being excellently solved.

A capsule type medical device is of a type of a capsule type medical device that is introduced inside the living body to gather in-vivo information, and comprises a capsule shaped casing; an in-vivo information acquisition device for acquiring the in-vivo information; a communication device for sending the in-vivo information acquired by the in-vivo information acquisition device to outside of the living body by wireless; at least one pair of first electrodes provided in a vicinity of one end along an axis of the casing for giving electric stimulation to body tissue in the living body; a first current control device for sending current to the first electrodes; and an interelectrode distance variation device for changing a distance between the electrodes.

The invention discloses an F type reinforced concrete intermediate jacking station jacking pipe. The F type reinforced concrete intermediate jacking station jacking pipe comprises a front housing anda rear housing which are coaxially arranged; the front housing is in plug-in fit with the rear housing; a plurality of hydraulic cylinders are arranged between the inner parts of the front housing andthe rear housing in the circumferential directions of the front housing and the rear housing; the two ends of the hydraulic cylinders are connected with the front housing and the rear housing correspondingly; oil inlet pipes communicate between oil inlet ports of the adjacent hydraulic cylinders; and oil outlet pipes communicate between oil outlet ports of the adjacent hydraulic cylinders. By means of the F type reinforced concrete intermediate jacking station jacking pipe, a jacking pipe can be smoothly jacked forward step by step in long-distance jacking pipe construction.

The invention relates to the technical field of bridge engineering construction, in particular to an erecting, pushing and sliding method of a large-tonnage steel box beam. The method comprises the following steps of: firstly, arranging flat steel gasket boxes at the top of each bridge pier to obtain a plane, mounting a driving pusher or a driven pusher and hydraulic jacks for lifting and falling the beam on the plane and moving the steel box beam into the bridge pier; then, starting the driving pusher to drive the steel box beam bodies to slide forwards, simultaneously lifting the hydraulic jacks for lifting and falling the beam to jack the steel box beam after a piston travel is finished, returning the driving pusher to an initial position and falling the hydraulic jacks; and repeating the piston travel to move the steel box beam in place. The method of the invention can be used to safely, rapidly, accurately and continuously realize the longitudinal in place of steel box beams and has controllable pushing and longitudinally moving speed without arranging an upper slideway or a lower slideway so as to save a great amount of rail devices and labor without occupying riverway space.

The present invention relates to a garbage feeding and pre-heating drying device, and belongs to the field of the biomass and renewable energy utilization devices, and comprises a garbage funnel, a material pushing device and a drying bed; wherein, the material pushing device is arranged above the drying bed. The garbage feeding and pre-heating drying device is distributed in one level or two levels; when the device is distributed in two levels, a stage-typed arrangement is formed between the front level and the back level; each level of the device comprises a material pushing device and a drying bed, and the drying bed is of a fixed type; each level of the material pushing device consists of a sliding-block guide-rail reciprocating mechanism, a connection box and a material pushing rod; the material pushing rod is hinged with the sliding block, and the material pushing rod is provided with a reversed-triangle fin. When the flat size of the drying bed is too large, two or more material pushing material devices can be arranged in parallelism. The drying device of the present invention has the advantages that with the material pushing rod, the garbage can be smoothly proceeded on the drying bed, thereby being uneasy to cause the squeezing; the height different exists between the drying bed and the material pushing device, so that the garbage falls down during the proceeding process, thereby realizing the effect of loosening the garbage, therefore, the garbage is dried more uniformly.

The invention discloses a vascular stent conveying system and a conveying method thereof. The vascular stent conveying system comprises a catheter unit and a conveying device for driving the catheter unit. The catheter unit comprises an outer pipe and an inner pipe, vascular stents are arranged between the outer pipe and the inner pipe, a barb penetrating inner cavities of the vascular stents is fixedly arranged on the inner pipe and comprises a circular sleeve portion and an elastic portion, the elastic portion is abutted to the vascular stents, and the conveying device drives the barb to extend and retract through the inner pipe and pushes out the vascular stents at intervals through the inner pipe. According to the vascular stent conveying system, the catheter unit is provided with a specific barb structure, a direct pushing mode of the conveying system is changed into a reciprocating pushing mode, pushing stroke is short and not limited by the lengths of the vascular stents, the conveying system is operated by one hand conveniently and rapidly, the other hand can be released, only one hand is limited, other operations can be performed in the medical process, a reciprocating pushing mechanism is stable in pushing, conveying stability of the vascular stents is ensured, and smooth surgery is ensured.

Provided is a flat pressing machine, by which a laminated body can be smoothened, irrespective of unevenness of a base material, cost of a strip-like film for transfer is reduced, a laminated resin is adhered to the strip-like film and does not scatter at the time of peeling the laminated body, and furthermore, a rough surface of the strip-like film is not transferred to the laminated body. A laminating apparatus, and a laminating method using the flat pressing machine and the laminating apparatus are also provided. A flat pressing machine (3) presses a laminated body (8), in which a resin layer (8c) is formed on an uneven surface of a base material (8a), by using facing pressing means, and smoothens a surface of the laminated body (8). The flat pressing means is provided with a pair of strip-like films; a transfer means for transferring the both strip-like films in the longitudinal direction of the film, in a state where the laminated body (8) is sandwiched between the both strip-like films; a hermetically sealed space section (34) for pressing the laminated body (8) by the both pressing means in a depressurized state; and a pressure control means for controlling inside the hermetically-sealed space section (34) in the depressurized state.

The invention discloses a mounting device for a wind power blade flasher. The mounting device comprises a pair of guide rails fixed on an upper bottom plate and sliding blocks which can slide up and down along the guide rails, a telescopic rod with a graduated scale fixed on the outer side surface is arranged on the two sliding blocks in parallel, a supporting plate is rotationally connected between the free ends of the two telescopic rods, and a plurality of suction cups are connected to the supporting plate; a first through hole for mounting a drill die is formed in the middle of the supporting plate, two mutually parallel guide rods are vertically arranged on the two sides of the first through hole, a sliding plate is arranged on the guide rods in a penetrating manner, the supporting plate is connected with the sliding plate through springs, a second through hole used for installing an electric drill is arranged in the middle of the sliding plate, a gear is rotationally connected with on one side, parallel to the telescopic rod, of the sliding plate, and the gear is meshed with a rack vertically fixed on the supporting plate; and the electric drill, the drill die and the auxiliary component cooperate to realize the installation of a flasher. According to the mounting device, the vertical degree of punching can be ensured, the punching process does not shake, the flasher is tightly installed, the operation difficulty of an operator is reduced, and the installation efficiency is improved.

The invention relates to a device for measuring the sediment thickness through a drill bit variable pressure sensing method. The device comprises an upper cover plate. A plurality of protection frames are perpendicularly arranged on the upper cover plate, a pressure sensing propelling device perpendicular to the upper cover plate is arranged on a propelling device fixing seat and connected with a control terminal, a push rod of the pressure sensing propelling device faces the upper cover plate, and a sweeping motor connected with the control terminal is arranged between the push rod and the upper cover plate. A sweeping drill bit is arranged on the sweeping motor and penetrates through the upper cover plate. In the working process, the upper cover plate is static on the upper surface of sediment, the sweeping motor is started first, then the pressure sensing propelling device is started, the motor perpendicularly moves downwards to the bottom of a hole under the action of the pressure sensing propelling device, a certain numerical value is achieved through a real-time pressure sensor (manual calibration), the pressure sensing propelling device stops working, and the advancing distance of the push rod is the sediment thickness.

The invention relates to a maglev electric vehicle, which is characterized in that: a coil or a combined electric conductor and a plurality of vehicle body permanent magnet plates with the same peripheral polarity are arranged on the vehicle bottom plate, and the coil, or the combined electric conductor and the vehicle body permanent magnet plates shun each other along the lengthwise direction of the vehicle; a rail fixed on a road foundation is arranged right below the coil, the electric conductor as well as the permanent magnet plates; the cross section of a magnetic rail chair is a ring with an opening on the upper part, a plurality of rail permanent magnet plates magnetized along the thickness direction are fixedly connected on the internal wall of the magnetic rail chair, and the permanent magnet plates enclose the coil or the combined electric conductor and the vehicle permanent magnet plates at intervals; the rail permanent magnet plates and the vehicle permanent plates are opposite in parallel with like polarity, and the coil is connected with a direct current power supply. The vehicle is levitated and guided due to the magnetic repulsion force, and the electric vehicle is propelled forward by means of the electromagnetic action generated between the electrified coil or the electrified combined electric conductor and the rail. The maglev electric vehicle has the advantages of simple structure, less magnetic leakage, higher utilization rate of the magnets, no iron loss, no pollution due to the changeable electromagnetic field, low manufacturing costs, and easy popularization.

The invention relates to the technical field of maglev trains, in particular to a coil type permanent magnet electric levitation driving device for a maglev train. The permanent magnet of the Halbacharray replaces an original superconducting magnet to serve as a vehicle-mounted magnet and interacts with the zero-flux coil to achieve suspension and guide integration. The center of the first Halbach array magnet deviates downwards from the center of the zero-flux coil, so that the upper magnetic flux and the lower magnetic flux are different, the upper portion of the coil is opposite to the vehicle-mounted magnetic pole, the lower portion of the coil is the same as the vehicle-mounted magnetic pole, and therefore an upward suspension force is generated. Permanent magnets of a second Halbacharray are arranged at the bottom of the vehicle body, a long stator synchronous linear motor is adopted on the ground for propulsion, and stable propulsion is achieved. The single side of the permanent magnet adopting the Halbach array can reach a relatively large magnetic field, and the permanent magnet adopting the Halbach array replaces an original superconducting magnet to serve as a vehicle-mounted magnet without cooling under the requirement of the required magnetic field intensity, so that a complex cooling system and an auxiliary system are omitted, the cost is greatly reduced, and the structure is simplified.

The invention discloses an F type reinforced concrete intermediate jacking station jacking pipe. The F type reinforced concrete intermediate jacking station jacking pipe comprises a front housing anda rear housing which are coaxially arranged; the front housing is in plug-in fit with the rear housing; a plurality of hydraulic cylinders are arranged between the inner parts of the front housing andthe rear housing in the circumferential directions of the front housing and the rear housing; the two ends of the hydraulic cylinders are connected with the front housing and the rear housing correspondingly; oil inlet pipes communicate between oil inlet ports of the adjacent hydraulic cylinders; and oil outlet pipes communicate between oil outlet ports of the adjacent hydraulic cylinders. By means of the F type reinforced concrete intermediate jacking station jacking pipe, a jacking pipe can be smoothly jacked forward step by step in long-distance jacking pipe construction.

The invention discloses a construction support device and a construction method for a bridge adjacent to a business line. The construction support device for the bridge adjacent to the business line comprises a middle support (81) used for supporting the middle of the bridge, a side support group used for supporting the side face portion of the bridge and a disc buckle frame (84) arranged on the side support group and used for supporting a template on the side face portion of the bridge. The construction support device for the bridge adjacent to the business line realizes supporting for the template on the side face portion of the supported bridge through the disc buckle frame (84), realizes supporting for the middle of the supported bridge through the middle support (81), and realizes moving for the bridge through the side support group, thereby realizing construction for the bridge far away from an existing rail traffic business line, and improving construction efficiency of the bridge.

Disclosed is a reaction device for producing hydrocarbons from synthesis gas, in which hydrocarbons, olefins, oxygenates, etc., are produced over a Fischer-Tropsch catalyst by using synthesis gas, so that catalyst particles can easily be from a slurry which is discharged to the outside. That is, the present invention provides a reaction device for producing hydrocarbons from synthesis gas, in which an internal filter system for separating particles enlarged due to a agglomeration phenomenon of a catalyst is installed inside the reactor, and an separating device is separately disposed outside, such that it is possible to recirculate only particles having a size appropriate for performing F-T synthesis in the slurry phase, and additionally, it is possible to effectively discharge and process a catalyst aggregated due to a combination of fine catalyst particles, the catalyst chipped off during the operation, etc., liquid hydrocarbon, resulting water, etc., in the slurry phase reactor.

The invention discloses a multi-point overall pushing steel box girder construction method, which belongs to the field of bridge engineering. The invention adopts tooth plates with tooth grooves on the steel box girder and the web of the guide beam, and uses the jack to provide jacking force, wherein the piston rod of the jack is provided with a slide block, and the slide block is provided with a ratchet block with a slope And its control spring, its inclined surface is located at the side of the jack, and the thrust of the steel box girder and the guide beam is applied to the steel box girder and the guide beam by the thrust of the jack, and the ratchet will withdraw from the tooth groove and enter the next thrust in the return stroke; The jack provides support and adjusts the elevation of the corresponding point. At the same time, displacement sensors and pressure sensors are installed on the jack and the jack to collect real-time information, so as to control the process of pushing. The invention has less steel consumption, controllable support reaction force and thrust, and can well solve the problem of steel box girder rotation angle.

The invention discloses a handheld type electric cable shearer. The handheld type electric cable shearer structurally comprises a static shearing head, a movable shearing head, an engagement fixed steel jacket, an electric shearing device, a handle, an anti-skidding adhesive layer and a detachable battery, wherein the static shearing head is arranged at the head end of the engagement fixed steel jacket; the static shearing head and the engagement fixed steel jacket are fastened; the movable shearing head is arranged on the static shearing head; and the movable shearing head and the static shearing head are in sliding fit. Two propulsion shearing mechanisms arranged inside the electric shearing device are driven through a rotating shaft arranged at the front end of an intelligent motor, sothat a driving solid circular rod is pushed forwards and engaged with a circular column, and a circular part formed by the movable shearing head and the static shearing head shrinks gradually so as toachieve the shearing effect; and the propulsion shearing mechanisms are simple in structure, and easy and convenient to install; and parts for maintenance are easy to purchase and long in service life.

The invention provides a permanent magnetic suspension and magnetic wheel propulsion vehicle. The symmetrical centre of the soleplate of a car body is provided with a driving source, and magnetic wheels are symmetrically fixed at the left and the right of the extended shaft; a rail which is fixed on a roadbed is arranged just below each magnetic wheel; the permanent magnetic plates which are filled with magnetism in thickness direction are consolidated on the rail; the bottom of the car body stands aside a soft magnetic wheel along the extension direction of the rail; the permanent magnetic plate on the vehicle which is arranged in parallel and has the same polarity and the rail permanent magnetic plate is arranged a clearance away from the rail; one part of the magnetic plate and the permanent magnetic plate of the car body are inserted into the trough of the rail but keep a clearance away from the trough wall in order to be not contacted with the trough; alternatively, both the magnetic wheel and the permanent magnetic plate on the vehicle span above the rail by keeping a clearance with the rail; the vehicle is suspended and guided due to a magnetic repulsive force, and the driving source drives the soft magnetic wheel to rotate to generate magnetic force function with the rail, so as to propel the vehicle.

The invention relates to the technical field for anorectal surgery appliance, in particular to lubrication equipment for anorectal surgery. The lubrication equipment for anorectal surgery is characterized by comprising a base and an anus expanding cylinder, wherein a speed reducing mechanism is connected to one end of the anus expanding cylinder, and is mounted on the base; a syringe for accommodating lubricating fluid is also connected to the base; the input end of the syringe is connected with the output end of the speed reducing mechanism; an annular cavity and a plurality of fluid outlet holes are formed in the anus expanding cylinder, and are in communication; and the output end of the syringe communicates with the annular cavity through a hose. According to the lubrication device which can push the anus expanding cylinder and injecting the lubricating fluid at a synchronous speed, provided by the invention the problem that when the anus expanding cylinder is pushed to the anus, damages to the anorectal wall by the anus expanding cylinder are generated, is solved.

The invention relates to a full-automatic EPB assembling machine. The machine comprises a machine frame and a power distribution control box arranged in the machine frame; a conveying belt device is arranged at the upper end of the machine frame, a nut feeding device and a screw rod feeding device are symmetrically arranged on the two sides of the starting end of the conveying belt device, a plurality of sets of jig assemblies are movably placed at the upper end of the conveying belt device, and a jig jacking device which is in butt joint with each jig assembly is arranged below the conveyingbelt device; and a pressing device, a detection device, an OK material discharging device and a NG material discharging device are sequentially arranged on one side of the conveying belt device from left to right. According to the machine, two nut fixing blocks are arranged on each jig assembly, so that double-station operation is realized, and the working efficiency is greatly improved; the nut fixing blocks are provided with receding holes matched with one ends of EPB nuts, so that accurate positioning on the EPB nuts is achieved; and lifting matching holes formed in jig bottom plates are matched with jig matching pins of the jig jacking device, so that the position of each jig assembly after rising can not be deflected, and the machining precision is further improved.

The invention relates to the technical field of fishery breeding, and discloses a forage feeding device for fishery breeding. The device comprises a device main body; the upper end of the device mainbody is provided with a bearing frame; the upper end of the bearing frame is fixedly welded with a forage feeding groove; a pushing mechanism is arranged at the bottom of the inner wall of the foragefeeding groove; a limiting plate is mounted on one side of the pushing mechanism on the inner wall of the forage feeding groove; an extruding mechanism runs through the top of the forage feeding groove; a supporting mechanism is mounted on one side of the bearing frame on the upper end of the device main body; a feeding and conveying belt is arranged on the upper end of the supporting mechanism; aforage receiving frame is mounted below the forage feeding groove on the upper end of the feeding and conveying belt; a braking motor is mounted inside the bearing frame. The forage feeding device for fishery breeding can improve the use safety, and avoid the phenomenon that food intake is affected by excessive scramble of a fish school, and different sizes of forage can be obtained through crushing so as to meet the use requirements.

The invention aims to overcome at least one defect of the prior art and provides a shield tunneling machine marching method, so that the manufacturing cost of supporting seats is lowered and the circulation utilization of the supporting seats is achieved. The method includes that S1, a shield tunneling machine is placed on supporting seat groups to keep the forward direction of the shield tunneling machine parallel to the supporting seats; and the outer end of a horizontal push cylinder of the shield tunneling machine is connected with reaction members; S2, the horizontal push cylinder of theshield tunneling machine is started, and the shield tunneling machine is marched to slide in the head end direction; S3, when the shield tunneling machine is completely separated from at least a firstsupporting seat, the horizontal push cylinder extension of the shield tunneling machine is stopped, the horizontal push cylinder of the shield tunneling machine is separated from the reaction members, and first supporting seats and second supporting seats are separated; S4, the horizontal push cylinder is contracted, and the horizontal push cylinder is contracted to connect the reaction members of the second supporting seats; S5, move the first separated supporting seats to the head end of the supporting seat group for installation and fixation; and S6, the steps S2, S3, S4 and S5 are repeated in a loop to push the shield tunneling machine to the designated position. According to the shield tunneling machine marching method, the operation is simple, and the dynamic circulation utilizationof the supporting seats is achieved.

The invention relates to a hydraulic control valve body outer surface automatic spraying device which comprises a U-shaped base, wherein a clamping mechanism is arranged on the top surface of the U-shaped base in a sliding manner; a motor is arranged on the top surface of the U-shaped base; the output shaft of the motor is connected with the bottom surface of the clamping mechanism; a hydraulic control valve body is arranged on the periphery of the clamping mechanism; a spraying mechanism is arranged at the left end of the U-shaped base; a uniform spraying mechanism is arranged at the right end of the U-shaped base through a right side plate; the spraying mechanism comprises a left side plate; mounting holes are uniformly formed in the left side plate from top to bottom; a sprayer is rotatably arranged in the mounting holes and is connected with a paint sprayer through a pipe body; a buffering cavity is formed in the left side plate; an upper spring is arranged between the top surface of the sprayer and the top surface of the buffering cavity; a lower spring is arranged between the bottom surface of the sprayer and the bottom surface of the buffering cavity; and the elastic force of the lower spring is greater than that of the upper spring. The hydraulic control valve body outer surface automatic spraying device is uniform in spraying, improves the paint accumulation phenomenon and ensures the spraying quality of the outer surface of the hydraulic control valve body.

The invention provides a shield receiving method, and relates to the technical field of shield construction. The shield receiving method comprises the following steps of determining a propulsion route; conducting a first reinforcing step, specifically, grouting and reinforcing a construction section from a shield receiving end of a cross transfer station to a second side underground diaphragm wall of the existing operation line of the station by using a pipe shed grouting method and a WSS construction method; conducting a first breaking step, specifically, breaking the underground diaphragm wall of the shield receiving end of the cross transfer station, so that interlayer soil between the underground diaphragm wall of the shield receiving end of the cross transfer station and the second side underground diaphragm wall is exposed; constructing a shield receiving box; carrying out underground excavation and supporting, excavating interlayer soil through a CRD construction method, and forming an excavation channel; conducting a second reinforcing step, wherein the two sides of the second side underground diaphragm wall are subjected to grouting reinforcement through the WSS construction method to form reinforcing layers; conducting a second breaking step, specifically, breaking a second side underground diaphragm wall steel bar and a cross-shaped steel plate; conducting a backfilling step, specifically, backfilling and closing the excavated tunnel; and conducting a receiving step, specifically, finishing shield receiving when a shield machine arrives the shield position. The method has the beneficial effects of reducing the damage rate of the cutter and being safer in construction.

The invention discloses a paper product machining device with slope type cutting grooves. The paper product machining device comprises a paper product extrusion type conveying device arranged on the left side, and a fixing table arranged at the right discharging end of the paper product extrusion type conveying device. The fixing table is further provided with a cutting table installed in a separated mode. According to the paper product machining device, the cutting table for paper products is a strip-shaped cutting table and can extend forwards by a long distance, the cutting table is provided with the multiple cutting grooves, and a pressing plate is provided with a plurality of cutting blades corresponding to the cutting grooves; the paper products delivered out by the paper product extrusion type conveying device can be delivered till extending to the front end of the cutting table, and the feeding length of the paper product extrusion type conveying device can be correspondingly controlled and set according to the size of the cutting table; and when feeding of the paper products is completed, an upper hydraulic device controls the pressing plate to conduct pressing, the cutting blades are pressed downwards and inserted into the cutting grooves to cut the paper products, that is, cutting work of the multiple paper products can be completed through one-time cutting, and thecutting efficiency of the paper products can be greatly improved.

The invention discloses a thermal-shock-resisting soft magnetic ferrite material and a preparation method thereof. The thermal-shock-resisting soft magnetic ferrite material is characterized by comprising the following raw materials in parts by weight: 50 to 70 parts of iron sesquioxide, 10 to 20 parts of nickel oxide, 5 to 10 parts of zinc oxide, 0.5 to 0.8 part of copper oxide, 0.2 to 0.3 part of vanadium pentoxide, 0.1 to 0.3 part of polyvinylpyrrolidone, 0.4 to 1 part of saw dust, 0.02 to 0.06 part of sodium lignin sulfonate, 2 to 4 parts of organic silicon resin and an appropriate amount of deionized water. By adopting the copper oxide, a crystal grain is more complete, the tissue is compacter, the temperature property can be improved, the thermal shock resistance can be improved, and the magnetic hysteresis loss can be reduced; the vanadium pentoxide is transformed to liquid phase at high temperature and is sintered, and the crystal grain is refined, so that the crystal interface and porosity in the crystal grain can be reduced, the starting magnetic conductivity can be enhanced. The soft magnetic ferrite material has characteristics of high strength, high starting magnetic conductivity and high thermal shock resistance and is capable of meeting the miniaturization requirement of a surface-mounted product.

The invention discloses a metal pipe wall thickness detection device, and relates to the technical field of the ultrasonic detection. The device comprises an electromagnetic ultrasonic sensor, a mounting part for mounting the electromagnetic ultrasonic sensor, a buffer module and a driving module which are connected in order. The invention further provides a metal pipe wall thickness detection method, the method comprises the following steps: the driving module drives the buffer module, and then drives the mounting part for mounting the electromagnetic ultrasonic sensor, so that the electromagnetic ultrasonic sensor is propped against a metal pipe and rotates the metal pipe, the electromagnetic ultrasonic sensor is maintained to always close to the metal pipe, and the electromagnetic ultrasonic sensor transmits and receives a detection signal. The detection device disclosed by the invention is long in service life, convenient for operation, convenient and practical, and has the functions of improving the energy conversion efficiency, and satisfying the detection on the metal pipe wall thicknesses in different specifications.

The invention discloses a concrete uniaxial tension load holding and testing device and a using method thereof. An independent load sensor does not need to be adopted, and the concrete uniaxial tension load holding and testing device also serves as a load sensor through the method that a connecting sleeve internally provided with the threads and the outer smooth circle is pasted with a resistancestrain gauge, so the testing device is simplified, and the cost problem that a large number of load sensors need to be occupied for long-term load holding is solved. Axial tension is applied to the concrete test block by simultaneously rotating the four second finish rolling nuts close to one side of an upper spherical hinge. Load is obtained by using the connecting sleeve pasted with the strain gauges as a load sensor, and fine adjustment of the load is realized by slightly rotating the second specification of the finish rolling nut. For a concrete uniaxial tension testing device, a square steel plate and a straight-through drawing instrument are additionally arranged on the basis of a load holding device. According to the invention, a concrete uniaxial tension holding load and a testingdevice are combined into one, so the operation is simple, and a stable and effective continuous load can be provided.

The invention discloses an FRP rib and concrete bonding performance load holding and testing device and a using method thereof. By adopting a method of adding a spherical hinge at one end, an end steel plate is pushed in parallel to ensure that the axis of a rib material is pulled. The device does not need to adopt an independent load sensor, and adopts a method of adhering a resistance strain gauge to a connecting sleeve with internal threads and an outer smooth circle, so the device also serves as the load sensor, the test device is simplified, and the cost problem that a large number of load sensors need to be occupied for long-term load holding is reduced. The device is simple to operate and can effectively keep a drawing force. According to the invention, a load holding test and an adhesive property test are combined into a whole, and the test device is formed on the basis of the load holding device without using two devices to carry out load holding test and test on the adhesiveproperty of the FRP rib and the concrete interface under the long-term action of the load.

The invention discloses a waterborne propulsion resistance reduction device for an all-terrain vehicle. The waterborne propulsion resistance reduction device comprises a frame and tires. A thrust bearing is arranged in a steel ring axle hole of the tire and provided with a supporting base. An upper swing arm and a lower swing arm which are arranged in parallel are hinged to the longitudinal end face of the supporting base with one on the upper portion and the other one on the lower portion. The other free end of the upper swing arm and the other free end of the lower swing arm are both hinged to the frame. A shock absorption rod is hinged to one of the upper swing arm and the lower swing arm; the other free end of the shock absorption rod is hinged to a main journal of a crankshaft; the crankshaft is arranged on the frame; one crank arm on the crankshaft is connected with a speed reducer; and the speed reducer is connected with a drive motor. Great resistance is brought to propulsion when too many tires on the amphibious special vehicle sink into water together with a vehicle body, and therefore the tires can be designed into a lifting mechanism which can be lifted up, lifting is conducted during waterborne propulsion, the tires can not enter water, resistance to waterborne propulsion is greatly reduced, and it is ensured that the vehicle body can be smoothly propelled on water.