176 results about "Torsional strength" patented technology

The invention provides an optical fiber force-shape sensing device and method through a natural orifice, and relates to the technical field of optical fiber sensing, the device comprises an operation arm mechanism, and specifically comprises a front end connecting joint, a plurality of movable joints and a tail end connecting joint which are sequentially and rotatably connected through a ball head and a ball socket, at least one limiting bulge is distributed on the circumferential surface of the ball head, and the limiting bulge is connected with the front end connecting joint; limiting grooves in one-to-one correspondence with the limiting protrusions are formed in the ball socket, and the limiting protrusions are in sliding fit with the limiting grooves so as to limit in-situ torsion between the adjacent joints. Through mutual cooperation of the limiting grooves and the limiting protrusions, in-situ torsion is reduced, torsional strength is improved, a shape-following embedded optical fiber sensor integration method is provided, shape reconstruction errors caused by movement dislocation are reduced, and protection of optical fibers is achieved. A first driving wire, four second driving wires, two optical fiber shape sensing modules and four optical fiber force sensing modules are embedded in the operation arm mechanism, and real-time accurate measurement of interaction force and the bending shape of the operation arm mechanism can be achieved.

The utility model relates to the technical field of forklift fork frame strength detection, in particular to a forklift fork frame strength detection device which comprises a bottom plate and a fork frame, and the top of the bottom plate is fixedly provided with a door-shaped frame and a mounting seat; two testing mechanisms used for carrying out downward pressing, lateral pushing and torsional strength detection on the fork frame are symmetrically arranged in the door-shaped frame, and control mechanisms used for controlling the door-shaped frame to move longitudinally are arranged at the positions, corresponding to the two testing mechanisms, of the top of the door-shaped frame; by arranging the testing mechanism, the effects of simulating a vertical pressure test during cargo bearing, simulating a lateral force test during cargo roll or vehicle body turning and simulating a torsional load test caused by uneven ground or cargo gravity center shift during cargo insertion can be achieved; the performance of the fork frame under various actual working conditions can be comprehensively evaluated, and it is ensured that the fork frame can work safely and reliably in a complex working environment.

The utility model discloses a main shaft of a photovoltaic tracking support and the photovoltaic tracking support. The cross section of the main shaft is a compact cross section. The cross section of the main shaft comprises four plane sections and four arc sections, and the four plane sections and the four arc sections are sequentially and alternately arranged in the circumferential direction to form a square tubular structure; the widths of the four plane sections are equal, and the radians of the four arc sections are also equal, so that a square tubular structure formed by the four plane sections and the four arc sections is a centrosymmetric graph relative to the axis of the main shaft. The ratio of the width x'of the plane section to the wall thickness t of the main shaft, namely the width-to-thickness ratio x ' / t is between 20 and 25, and the torsion strength and the bending strength can be balanced and considered, so that better stability is achieved.

A body-worn device for flexibly supporting a body part such as the head in a hunched over position such as when a surgeon performs surgery. The device can include a head harness connected to a torso harness by a specialized oblong variable stiffness beam that extends upwardly along the back of the spine of the wearer. The beam can include a variable stiffness member having a complex tapered geometry. The member can be made from a unitary piece of fiber composite material wherein the orientations of the fibers are varied to provide both bending and torsional strength and stiffness that varies along the length of the member. The beam and harnesses can include a plurality of interconnected mechanisms to provide greater adjustability.

The utility model relates to the technical field of bolt workpiece detection tools, in particular to a bolt torsional strength detection device, which is characterized in that two racks are symmetrically arranged front and back, the racks are fixedly arranged on the right side wall of a base on the left side, two supporting shafts are symmetrically arranged front and back, and the two supporting shafts are respectively screwed on the racks on the front side and the rear side through bearings; the number of the clamping claws is two, the two clamping claws are fixedly arranged on the supporting shafts on the front side and the rear side respectively, the supporting arms are fixedly arranged on the supporting shafts, and the front supporting arm and the rear supporting arm are symmetrically arranged up and down. By designing clamping and fixing structures with symmetrical front and back brightness and arranging a u Andong driving structure, the rotation directions of front and back transmission structures are opposite, and the transmission structures are provided with variable-speed transmission structures, so that the stress application rates of the front and back clamping structures are adjusted, different curve models for measuring the torque change of a workpiece are realized, and the measurement precision of the workpiece is improved. And the comprehensive coverage of the torsional strength measurement data of the bolt workpiece is realized.

The invention relates to the technical field of geological exploration, and discloses a stratified sampling drilling device and a connecting piece and a drilling cylinder thereof, which are arranged at the top end of the device and used for providing rotation driving force. The multi-section drill pipe comprises a low pipe, a middle pipe and a deep pipe which are connected in sequence. According to the stratified sampling drilling device and the connecting piece thereof, the connecting piece adopts a circumferential positioning and radial limiting structure of an annular groove II and an annular positioning plate, and is matched with the axial locking design of a threaded rod and a nut, so that the coaxiality and the connection strength of adjacent drilling pipes are kept in the drilling process, and the impact of stratum stress is effectively resisted; the annular positioning plate is embedded into the second annular groove to achieve + / -0.05 mm-level coaxiality calibration, the pre-tightening force of the threaded rod can reach 50 kN, compared with traditional threaded connection, the torsional strength is improved by three times, the disassembly time is shortened to 5 minutes from 30 minutes, the detachable connection mode supports rapid assembly and disassembly, the number of drill pipe sections can be flexibly increased or decreased according to the drilling depth, and the drilling efficiency is improved. Meanwhile, the equipment maintenance and sample cylinder replacement processes after sampling are simplified, and the working efficiency is improved.

The utility model discloses a slide rail with a support frame, which comprises a first rail, a first support frame arranged on one side of the first rail and a second support frame, the first support frame comprises a first side wall, two ends of the first side wall are respectively bent and extended to form a transverse wall, the tail ends of the two transverse walls are respectively bent and extended towards the opposite inner sides to form longitudinal sections, and the longitudinal sections are respectively bent and extended towards the opposite inner sides of the first side wall and the second side wall. The second supporting frame comprises a second side wall, the two ends of the second side wall are bent and extend towards the two longitudinal sections to form first parts respectively, the tail ends of the two first parts are bent reversely to form bent parts abutting against the two longitudinal sections respectively, and the tail ends of the two bent parts extend towards the first side wall to form second parts supported on the two transverse walls respectively. The two second parts abut against the sides, adjacent to the two transverse walls, of the two first parts, and therefore the torsional strength for avoiding deformation when the second supporting frame is pulled by the first rail is improved.

The utility model relates to the technical field of battery cover plates, and discloses a connecting structure of a rubber coating ring and a top cover plate, which comprises the top cover plate, a pole hole for a pole to pass through is arranged in the top cover plate, and the pole is provided with a middle section arranged in the pole hole in a penetrating manner; the periphery of the middle section is wrapped with a rubber coating ring, and a notch groove is formed in the periphery of the rubber coating ring. An upper plastic part is embedded in the pole hole, the periphery of the rubber coating ring is wrapped by the upper plastic part, the notch groove is embedded, and the pole, the top cover plate, the rubber coating ring and the upper plastic part are fixedly combined into a whole; the notch groove is formed in the periphery of the rubber coating ring, the upper plastic part can be embedded in the notch groove in the process of forming the upper plastic part through injection molding, and the upper plastic part and the top cover piece are combined into a whole, so that the torsion value is increased, the upper plastic part cannot fall off after being subjected to a fatigue test, the service life of the upper plastic part is prolonged, and the anti-rotation capability of the pole is improved.

This invention discloses a composite testing device for the interface connection strength of a gas meter housing, relating to the field of gas meter manufacturing and testing technology. In existing technologies, after the gas meter housing is manufactured, it needs to be transferred to specific equipment for interface pull-out and torsion testing, both typically performed on separate equipment, resulting in low efficiency. The composite testing device provided by this invention is integrally mounted on the fixed pressure plate of a stamping and riveting equipment, comprising: a clamping structure including a clamping cylinder and a clamping linkage assembly, the clamping linkage assembly including a wedge-shaped push block and two clamping parts, the clamping parts having arc-shaped clamping portions for clamping and fixing the interface; a pull-out testing structure applying a straight load at the interface for pull-out strength testing; and a torsion testing structure applying a torsional load to the clamping structure for torsional strength testing. This invention enables direct strength testing after stamping and riveting, eliminating the step of disassembly and reinstallation, improving production testing efficiency, and reducing production costs.

The utility model discloses an antenna support and an unmanned off-highway dumper. The antenna support comprises a mounting plate, two pairs of mounting seats, a pair of front inclined supporting rods, a pair of rear inclined supporting rods and a pair of rear supporting rods. The pair of front inclined supporting rods, the pair of rear inclined supporting rods and the pair of rear supporting rods are in one-to-one correspondence and are splayed, the front inclined supporting rods and the rear inclined supporting rods incline forwards, the large opening ends of the pair of front inclined supporting rods are connected with the two ends, close to the length direction, of the bottom of the mounting plate respectively, and the small opening ends of the pair of front inclined supporting rods are connected with the pair of mounting bases close to the mounting plate respectively; the small opening ends of the pair of rear supporting rods are connected with the two sides of the middle of the bottom of the mounting plate respectively, the large opening ends of the pair of rear supporting rods are connected with the other pair of mounting bases respectively, the top ends of the rear inclined supporting rods are connected with the positions, close to the tops, of the corresponding front inclined supporting rods, and the bottom ends of the rear inclined supporting rods are connected with the lower portions of the corresponding rear supporting rods. Compared with a bending steel plate in the prior art, the bending steel plate has the advantages of being light in weight, high in overall torsional strength, not prone to breakage and good in reliability.

The utility model discloses a steering wheel rim torsion test fixture which comprises a support frame and at least two clamping structures, the clamping structures are arranged in a central symmetry mode, one end of each clamping structure is detachably installed on the support frame, and the other end of each clamping structure can abut against a steering wheel rim and is used for clamping and fixing the steering wheel rim. The connecting structure is mounted on one of the clamping structures and is used for being connected with an external force application device so as to test the torsional strength of the steering wheel rim; through the clamping structure, the steering wheel rim is efficiently and stably clamped and fixed, the overall universality and adaptability of the clamp are improved, the working efficiency is high, the adaptability is high, and the connecting structure provides a stable and reliable torque transmission path for the torsional strength test of the steering wheel rim; the accuracy and consistency of torque application in the test process are ensured, and the accuracy and repeatability of test data can be improved.

The application discloses a hollow commercial vehicle front axle and a manufacturing method thereof. The front axle is composed of an axle body and a steel plate spring seat. The axle body is a hollow structure obtained by reducing and upsetting an end portion of a seamless steel pipe, bending and pressing forming. The crossbeam and the bent neck of the axle body are thin-walled rectangular pipes with equal wall thickness and variable cross section. The fist part is a thick-walled rectangular cylinder with constant height and gradually narrowing width from the inside to the end portion. A strip-shaped hole is arranged on the outer end curved surface of the fist part and is welded and solidified by a welding plug. A concave limiting groove is arranged on the front side surface. The steel plate spring seat is composed of an upper cover and a lower support. The upper cover is clamped on the upper portion of the crossbeam, and the lower support is clamped on the middle portion of the crossbeam and covers the lower portion of the crossbeam. The hollow commercial vehicle front axle provided by the application can replace the existing forged, combined welded and punched and welded front axle, has light product weight, high bending and torsional strength, and is easy to match with the existing suspension system for vehicle mounting. The axle body has good forming quality, no defects such as folding and outer side cracks in the fist part inner cavity, and high shear performance.

The utility model relates to the technical field of engines, and provides a high-efficiency large-torque rotor engine. One of a plurality of turbine blades, slope blades and cambered surface blades is arranged in a rotor combustion chamber, the tangential stress area of a rotor is increased, dispersed and efficient combustion is achieved through an ignition channel, thrust in the rotating direction of the rotor is greatly increased, a crankshaft obtains larger torque, the overall acting power is also increased, and the service life of the rotor is prolonged. And the thrust-weight ratio of the rotor engine is improved. The crankshaft is matched with the rotor inner ring gear and the stator gear, so that power transmission of rotor acting is completed. The rotor inner ring gear and the rotor can adopt an integrated or split structure, and are connected through a polygonal embedded structure when being split, so that the torque resistance of the rotor is improved, the shear strength of a connecting bolt can be reduced, and the rotor is suitable for a high-power rotor engine structure. By improving the rotor structure, optimizing the blade design, adopting the polyhedral assembly structure and the like, the working efficiency, the torque and the overall performance of the engine are improved.

The utility model relates to the technical field of gliders, in particular to a carbon beam composite material wing structure. The airfoil comprises an airfoil main beam and foam layers located at the two ends of the airfoil main beam, the airfoil is of a structure which is thick in the middle and thin at the two ends on the whole, the airfoil main beam and the foam layers are wrapped with a layer of airfoil skin, and the airfoil main beam and the airfoil handle are connected in an inserted mode and fastened through a binder and a bolt; a weight reduction structure is designed in a non-bearing area of the wing handle, so that the overall weight of the structure is reduced; the modulus of the high-modulus carbon fiber main beam can reach 200Gpa, so that the deformation in a bearing state is effectively controlled, and the structural modal of the airfoil is improved; the high-modulus carbon beams and the wing handles are connected in an inserted mode, bonded through epoxy glue and connected in a fastened mode through bolts, and the bearing force of the wing surfaces is effectively transmitted to wing handle connecting points; the outer skin of the airfoil is made of high-strength carbon fiber one-way material, the laying direction and number of fibers are designed according to calculated stress, the 0-degree fiber direction, the 90-degree fiber direction and the + / -45-degree fiber direction are configured, and the torsional strength of the airfoil is improved on the premise that the bearing requirement is met.

The utility model discloses a kind of fixed rotary buckle type anti-slip structure, comprising: main component, the main component includes first associated piece and second associated piece.The utility model is provided with bevel, clamping block, clamping groove and ring, and the contact of second associated piece rotation connection process with bevel and press will make clamping block automatically move out and facilitate installation, clamping block enters the clamping groove and can be implemented anti-removal limiting reinforcement, two clamping blocks are opened by ring and can be conveniently disassembled by single hand moving out;The step can be implemented connection limiting reinforcement, convenient to use, improve the structural stability;Based on the above beneficial effect, it is provided with connecting rod, connecting slot, positioning rod and positioning slot, connecting rod enters connecting slot and can be implemented directional reinforcement between first associated piece and second associated piece, positioning rod is respectively inserted with two positioning slots and can be implemented positioning of positioning rod and facilitate device disassembly;The step, improved torsional strength, connection is stable, and anti-slip effect is better.

The invention discloses an underwater electronic module anti-vibration structure which comprises a base plate and a center column, the center column is arranged on the base plate, a first fixing plate and a second fixing plate are connected to the center column, and an electronic module is arranged between the first fixing plate and the second fixing plate. The first fixing plate is connected with the chassis through a supporting column; and a clamping block is arranged on the central column and is clamped with the electronic module through a hoop so as to fix the electronic module. According to the anti-vibration structure of the underwater electronic module, the center column and the supporting column are arranged on the chassis, the first fixing plate and the second fixing plate are fixedly connected to the center column, the electronic module is fixed, and the bending strength and the torsional strength of the structure are improved by adding the design of the supporting column, flange embedding and the like; by adding the anti-vibration pad, the clamping block and the hoop, resonance between the vibration isolation system and the electrical system is avoided. On the basis of relieving the system coupling vibration effect, the operation stability of the electronic equipment is improved.

The invention discloses a flange plate and shaft tube integrated composite material transmission shaft and a design method. The transmission shaft comprises a main body shaft tube, two flange plates arranged at the two ends of the main body shaft tube correspondingly and an outer stacking type reinforced connecting structure used for connecting the main body shaft tube and the flange plates. All the parts are integrally formed through an integral winding and laying process to form a continuous composite material structure. According to the method, in combination with installation space and design indexes, simulation models with different emphasis points are established for different structural areas of the flange plate and shaft tube integrated composite transmission shaft, and dynamic iteration is conducted on the layering proportion and the layering decline scheme through simulation calculation, so that collaborative optimization of the critical rotating speed and the torsional strength is achieved.

A 13-gear large-torque mechanical transmission comprises a first shaft and a first shaft gear which are coaxially connected, and further comprises a second shaft coaxial with the first shaft, a plurality of gear position gears are coaxially arranged on the second shaft, and gear position synchronizers corresponding to the gear position gears are further coaxially arranged on the second shaft, and the 13-gear large-torque mechanical transmission is characterized in that second shaft spline pads are coaxially arranged between the gear position gears and the second shaft; a plurality of grooves are evenly distributed in the inner circumference of each two-shaft spline pad, limiting grooves are formed in the peripheries of the two shafts corresponding to the grooves, hexagonal keys parallel to the axes of the two shafts are arranged in the spaces between the grooves and the corresponding limiting grooves, top gaps are reserved between the hexagonal keys and the top faces of the grooves, and side gaps are reserved between the hexagonal keys and the opposite side faces of the grooves. Through reasonable arrangement of component structures, the fatigue life and static torsional strength of the 13-gear transmission are integrally improved, the matching requirement of a large-torque engine is met, and the requirements of vast customers for transportation efficiency and fuel economy are met; meanwhile, the device can be applied to 13-gear same-series products, and the purpose of reducing the market failure rate of the same-series products is achieved.

The utility model discloses a coal mine sampling device, which relates to the technical field of sampling devices, and comprises a sampling barrel, a sampling pipe, a sampling pipe and a sampling pipe, the spiral shaft is rotationally mounted in the sampling barrel, and a gap is reserved between the spiral shaft and the inner wall of the sampling barrel; the discharge hole is formed in one end, far away from the sampling hole, of the sampling barrel; the power source is mounted at one end of the sampling barrel and is in transmission connection with the spiral shaft; the at least one reinforcing rib is fixed to the edge position of the spiral shaft in the axial direction, and the reinforcing rib extends into the gap in the rotating direction of the spiral shaft; by means of the reinforcing ribs fixed to the edge of the spiral shaft in the axial direction, the overall rigidity and torsional strength of the spiral shaft are improved, the spiral shaft is effectively prevented from deforming or being subjected to torsional fatigue due to the action of torque and bending moment in the long-distance conveying process, and therefore the service life of the spiral shaft is remarkably prolonged.

To provide a motor pump that can ensure the torsional strength of the mounting section of the main shaft to which the impeller is attached, while suppressing the generation of fluid vortices and backflow downstream of the main shaft. [Solution] The motor pump comprises a first impeller, a main shaft to which the first impeller is fixed, a motor for rotating the first impeller, and a casing that houses the first impeller and the main shaft and has a fluid passage through which fluid flows. The downstream end of the main shaft is positioned in the fluid passage, and the main shaft has a mounting portion to which the first impeller is attached, and a smaller diameter portion positioned downstream of the mounting portion and having a smaller diameter than the mounting portion.

According to the computerized embroidery machine disclosed by the invention, vibration caused by rotation of the eccentric cam is inhibited through the first balance structure, so that the operation stability of the computerized embroidery machine is improved, and the precision of the computerized embroidery machine is ensured. The auxiliary shaft is located outside the machine shell and located above or below the machine shell, so that the auxiliary shaft and the first balance structure are not affected by the distance between the two adjacent machine heads, installation is convenient, and therefore the assembling efficiency of the computerized embroidery machine is improved. Vibration caused by movement of the presser foot driver and the needle bar driver is restrained through the balance block, so that the operation stability of the computerized embroidery machine is improved, and the precision of the computerized embroidery machine is guaranteed. The diameter of the auxiliary shaft is larger than or equal to that of the upper shaft, the bending strength and the torsional strength of the auxiliary shaft can be improved by increasing the diameter of the auxiliary shaft, and therefore the auxiliary shaft can bear larger loads when bearing torque and vibration generated by the eccentric cam, and deformation caused by the loads is reduced.

The invention discloses an internal insulation steel pipe special cable and a four-groove roller reducing mill thereof, and relates to the technical field of cables, the cable comprises a steel pipe layer and convex ribs integrally processed on the outer surface of the steel pipe layer; the reducing mill comprises a fixing ring; the rolling assembly is rotationally installed in the fixing ring, the rolling assembly comprises a rotating ring and four rollers distributed in the rotating ring in a surrounding mode, and a gap used for extruding a steel pipe layer of the cable to form a convex rib is formed between every two adjacent rollers; and the driving assembly is used for driving the rolling assembly to rotate in the fixing ring so as to form a convex rib which extends in the axial direction and is of a linear structure or a spiral structure on the surface of the cable. According to the invention, through the relation between the revolution speed of the roller and the advancing speed of the cable, the convex ribs with axial linear structures or the convex ribs with different leads and spiral structures can be flexibly processed, the torsional strength, the heat dissipation efficiency and the installation guidance quality of the special cable in different laying environments are improved, and the customization requirements of high-end markets are met.

The utility model relates to the technical field of electro-tricycle body accessories, in particular to a durable electro-tricycle headlamp installation support which comprises sleeves, the sleeves are arranged in pairs and arranged on the tops of two front reduction gears in a sleeved mode respectively, the outer wall of each sleeve is provided with a supporting plate extending towards the front of an electro-tricycle, and the supporting plates are arranged on the outer walls of the sleeves respectively. Mounting holes which correspond to each other are formed in the supporting plates; the outer reinforcing ribs are arranged along the edge of the supporting plate and are connected with the outer wall of the sleeve; the supporting plate, the outer reinforcing rib and the outer side wall of the sleeve form a shell structure. The two sets of outer reinforcing ribs are arranged on the sides, close to each other, of the two supporting plates correspondingly. Through the combination of the inner reinforcing ribs and the outer reinforcing ribs, the anti-twisting strength of the supporting plate is improved, and therefore stable supporting force is provided for a headlamp.

The utility model provides a cross beam structure of a road roller and the road roller, and belongs to the technical field of road roller parts, the cross beam structure of the road roller comprises a cross beam body and a hinge seat, the hinge seat comprises a mounting platform and at least one mounting plate arranged on the mounting platform, the mounting platform is used for connecting a hinge frame of a rear frame of the road roller, and the mounting plate is arranged on the mounting platform. The mounting plate is inserted into the cross beam body, the mounting plate extends to a second side face of the cross beam body through a first side face of the cross beam body, and the first side face and the second side face are oppositely arranged; wherein the installation platform abuts against and is connected with the first side face, and the installation plate is connected with the second side face. According to the cross beam structure of the road roller disclosed by the embodiment of the invention, the connecting structure strength and the torsional strength of the cross beam body and the hinge seat are enhanced.

The utility model discloses a badminton racket with a special middle tube, and relates to the technical field of badminton rackets, the badminton racket comprises a racket frame, the inner wall of the racket frame is fixedly connected with a plurality of groups of wires, the bottom end of the racket frame is fixedly connected with two groups of connecting rods, the two groups of connecting rods are arc-shaped, the bottom ends of the two groups of connecting rods are fixedly connected with connecting pieces, and the connecting pieces are fixedly connected with the middle tube. A middle pipe is fixedly connected to the bottom end of the connecting piece, the plane structure of the middle pipe is of a hexagonal structure, and a honeycomb structure is arranged in the middle pipe. Through the design of the honeycomb structure, the middle tube forms multidirectional support during batting, the torsional strength is improved, the twisting deformation at the moment of batting is effectively reduced, the angle of the bat surface is more stable, the ball control accuracy is improved, and the non-forced error rate is reduced; the wrist pad can buffer vibration when bearing impact force, reduce the influence of high-frequency vibration on the wrist, provide energy storage and release functions and accelerate deformation recovery.

The utility model provides a circuit board and an electronic device. The circuit board comprises a first substrate layer, a conductive layer and a second substrate layer. The first substrate layer comprises a first hard plate, a second hard plate and a soft plate connected with the first hard plate and the second hard plate, the first hard plate is electrically connected with the second substrate layer through a conducting layer, at least one reinforcing rib is arranged on the second substrate layer, and the reinforcing rib is in a closed geometrical shape. The electronic equipment comprises a circuit board and at least one electronic device, and the electronic device is arranged on the side, close to the first hard board, of the circuit board. According to the circuit board and the electronic equipment provided by the utility model, the reinforcing ribs in the closed geometrical shape are arranged on the second substrate layer of the circuit board, so that the stress acting on the second substrate layer is dispersed, the structural stability and the torsional strength of the circuit board and the electronic equipment can be remarkably improved, and the deformation and fracture risks caused by external force are reduced.

The invention relates to the technical field of wire detection, in particular to a communication wire strength detection device which comprises a detection table, a lifting plate and a lifting mechanism for driving the lifting plate to lift up and down are movably arranged above the detection table, and a mounting groove is formed in the upper surface of the lifting plate. A mounting groove is formed in the bottom of the lifting plate, a mounting opening communicated with the mounting groove is formed in the bottom of the lifting plate, the inner diameter of the mounting opening is smaller than that of the mounting groove, an upper annular plate is placed in the mounting groove, a pressure sensor is arranged below the upper annular plate, and the pressure sensor is arranged between the upper annular plate and the mounting groove. The clamping mechanisms in the upper ring plate and the lower ring plate stably clamp wires, and are matched with the lifting mechanism and the pressure sensor, so that accurate tensile detection is realized, and a data curve is generated; the rotating mechanism can flexibly complete torsional strength and anti-fatigue tests; tensile and torsion detection can be carried out synchronously, complex working conditions are simulated, and comprehensive and reliable data support is provided for wire performance evaluation.

The composite drill rod comprises a composite pipe body, a first metal connector, a second metal connector and a lining pipe arranged between the composite pipe body and the first metal connector. The outer wall of the first pipe body connecting section of the first metal connector and the outer wall of the second pipe body connecting section of the second metal connector are each provided with a conical connecting face and a cylindrical connecting face, and thin nails are densely distributed on the cylindrical connecting faces. The inner wall of the connecting section of the composite material pipe body is matched with the outer wall of the connecting section of the pipe body in shape and is connected with the pipe body through a bonding layer; the thick end of the thin nail is located in the drill hole of the pipe body connecting section, an adhesive layer is arranged between the thick end of the thin nail and the inner wall of the drill hole, and the thin end of the thin nail is located in the composite pipe body and used for forming a mechanical and adhesive mixed connecting structure. According to the drill rod, stress concentration can be avoided, the consistency of bearing is enhanced, the tensile strength and the torsional strength of the drill rod are improved, and the drill rod is lighter, higher in bearing capacity and higher in reliability. The invention further discloses an integral forming preparation method of the composite drill rod.

The utility model relates to the technical field of drill rod connection, in particular to a stable drill rod connecting structure for geological drilling construction, which comprises a first drill rod and a second drill rod, a connecting female head and a connecting male head are respectively and fixedly mounted at the butted end parts of the first drill rod and the second drill rod, and a plurality of raised strips are arranged on the outer walls of the connecting female head and the connecting male head. And a connecting sleeve is slidably mounted on the outer walls of the connecting female head and the connecting male head. Compared with the prior art, the drill rod has the advantages that the first drill rod, the second drill rod, the connecting male head and the connecting female head are arranged, the connecting male head and the connecting female head are in threaded connection, meanwhile, the connecting sleeve is installed on the outer wall of the connecting female head and the outer wall of the connecting male head, the multiple protruding strips enter the multiple grooves, and therefore the first drill rod and the second drill rod can be connected more stably; according to the drill rod, tight fit is achieved, the torsional strength is improved, meanwhile, it is ensured that the stability is higher when the drill rod transmits torque, geological drilling tasks can be conveniently implemented, and therefore the problems existing in the prior art are effectively solved.

The utility model relates to the technical field of coaxial lines, in particular to a dynamic-use-resistant vehicle-mounted coaxial line, which is characterized in that a fluoroplastic monofilament is spirally wound on the periphery of a central conductor, then an insulating layer, an aluminum foil layer, a braid layer and an outer coating layer are sequentially coated on the periphery, and the fluoroplastic monofilament is spirally wound on the periphery of the central conductor, so that the dynamic-use-resistant vehicle-mounted coaxial line is formed. And the insulating layer is extruded on the periphery of the fluoroplastic monofilament, so that a gap is formed between the central conductor and the insulating layer, the insulation effective dielectric constant is reduced, the torsional strength of the coaxial line is improved, and the use requirement of a dynamic environment is met. The aluminum foil layer sequentially comprises a first aluminum material layer, a first PET layer, a second aluminum material layer, a second PET layer and a second aluminum material layer between the two PET layers from inside to outside, and after the aluminum foil layer is rubbed by the insulating layer and the woven layer in the twisting motion, signal leakage is blocked through the second aluminum material layer between the two PET layers, and therefore it is guaranteed that signals are not leaked.