56results about How to "Highly stable" patented technology

The utility model belongs to the technical field of water purifiers, particularly relates to an integrated water purifier with a composite filter element, and aims to solve the problems that the existing water purifier with the composite filter element is complicated in structure and tedious in installation, the filter element is inconvenient to replace, the maintenance cost is high and the like. The water purifier main body is composed of a first filtering part, a second filtering part and a third filtering part, the first filtering part, the second filtering part and the third filtering part are fixedly connected in sequence, a filter element is arranged in the first filtering part, the filter element is made of PP cotton, and activated carbon is arranged in the second filtering part. According to the integrated composite filter element water purifier, impurities, bacteria and viruses in water are effectively removed through a multiple filtering technology, the water quality is ensured to be pure, the detachable movable cover design enables the filter element to be replaced easily and rapidly, the maintenance cost is reduced, the installation process is simplified through the combined design of the installation support, and meanwhile the stability of the water purifier is ensured.

The utility model discloses a vertical grating mounting structure rooted on a transverse keel, which belongs to the technical field of curtain wall construction and comprises the transverse keel, a curtain wall plate, a vertical grating and a connecting support. The vertical grating is arranged on the outer side of the curtain wall plate and comprises a main body and a connecting groove; the connecting support comprises a mounting plate, a supporting plate and a connecting block which are sequentially connected from inside to outside; the mounting plate is fixedly arranged on the transverse keel; the outer end of the supporting plate extends out of a gap between two vertically adjacent curtain wall plates; the connecting block is located in the connecting groove and connected with the connecting groove through a fixing bolt. The vertical grids are connected with the transverse keels through the connecting supports, installation is convenient and fast, in addition, the buckle plates are arranged to shield the connecting positions, and the building attractiveness is improved; vertical kidney-shaped holes are formed in the side walls of the connecting grooves, so that fine adjustment of the height of the vertical grating is achieved, the hole opening precision requirement is lowered, and the construction efficiency is improved; and positioning and adjusting bolts are matched, so that the height stability of the vertical grating is further ensured.

The utility model discloses a kind of high-precision shock-absorbing base components for three-coordinate measuring instrument, it is related to three-coordinate measuring instrument component technical field, including base support frame and shock-absorbing assembly, the base support frame is integrated structure, and base support frame uses cast iron alloy material, the shock-absorbing assembly is set on the upside of base support frame, and shock-absorbing assembly includes air float shock absorber, polyurethane cushion pad, marble shock-absorbing platform, fixed bottom cylinder, buffer spring and movable inner rod, the air float shock absorber is set on the both sides of base support frame upper surface, and air float shock absorber is provided with four groups. The high-precision shock-absorbing base component for three-coordinate measuring instrument, the device can strengthen the shock-absorbing effect of base whole by shock-absorbing assembly, reduce the influence of vibration on three-coordinate measuring instrument, improve the measurement accuracy of three-coordinate measuring instrument, by adjusting component so that the device can realize the height adjustment of base whole and support stability, different use positions can be adapted.

The utility model discloses a kind of knob brake devices and mower, knob brake device includes knob main body, knob bottom ring, knob cover and locating bead, knob brake device drives the rotation of motor height adjusting device's spiral column, spiral column drives motor in motor height adjusting device to move upwards or downwards, the lower end surface of knob bottom ring is equipped with ring locating hole;Locating bead is located on the device shell upper surface of motor height adjusting device, and is matched with the position of locating hole, and the bottom of each locating bead is equipped with spring;Knob cover is equipped with hole position, after knob main body passes through knob cover, knob cover is fixed with the device shell upper surface. The application can prevent knob from rotating randomly, make the rotation process more stable, simultaneously utilize sound or touch to perceive rotation angle, facilitate angle control, can be applied to adjust the height of motor, to adjust the height of motor front end prop, blade and other devices, structure is firm and stable, suitable for high-power electrical product.

The invention belongs to the technical field of metallurgy, and particularly relates to 590MPa-grade hot galvanizing dual-phase steel and a production method thereof, and the steel comprises the following chemical components in percentage by mass: 0.02%-0.06% of C, 0.01%-0.03% of Si, 0.90%-1.8% of Mn, less than or equal to 0.025% of P, less than or equal to 0.010% of S, 0.005%-0.010% of Al, 0.05%-0.30% of Cr, 0.05%-0.30% of Mo, less than or equal to 0.0060% of O, 0.010%-0.020% of N, and the balance of Fe and inevitable impurities. The method has the advantages that low carbon-silicon-aluminum and high nitrogen are cooperatively regulated and controlled in component design, and in the hot rolling process, premature precipitation of AlN particles in the hot rolling process is effectively inhibited by controlling the low coiling temperature, so that a large amount of nitrogen is reserved in a hot rolled plate in a solid solution state.

The invention provides a device and method for pasting a strain gauge of a force sensor, and relates to the technical field of sensor design, and the device comprises a positioning assembly which is used for positioning the pasting position of a to-be-installed strain gauge; and the force application assembly is matched with the positioning assembly to work and applies pressure required by high-temperature curing to the strain gauge to be installed. Components of the device are simple and reasonable in design, adopted structural materials are common and easy to process, and selected auxiliary materials are wide in market application and convenient to purchase. The pressure is adjustable and stable, the height is adjustable, the device is suitable for various types of products, the curing time is greatly shortened, the scrap amount of the strain gauges in the pasting and pressure maintaining process is reduced, the quality stability of the products is guaranteed, and the purposes of energy conservation, consumption reduction and efficient production are achieved.

The utility model discloses a multifunctional gas alarm detection device, comprising a detection seat and a detection rod, a separator plate is fixedly installed in the detection seat, a gas tank and an air bag are respectively in threaded connection in the detection seat, and the gas tank and the air bag are symmetrically arranged at two ends of the separator plate. The detection device comprises a detection seat, a gas tank, a gas bag and a combustion tank, the upper end of the detection seat is symmetrically and fixedly provided with first connecting pipes, and the first connecting pipes are respectively communicated with the gas tank and the gas bag. The detection can be carried out through combustion of combustible materials placed in the combustion tank, the detection can be carried out through detection of specified gas, the combustible materials in the combustion tank are not combusted at the moment, the combustion tank only plays a role in circulation, the specified gas is released through the detection head and is detected, and the detection device has the advantages of being high in practicability and good in protection performance.

The utility model relates to an installation structure for an illuminating lamp and an illuminating system. The installation structure comprises a bottom plate unit, a first support unit, a second support unit, a first locking unit, a second locking unit, a control unit and an installation unit. An advantage is that; the first support unit and the second support unit are matched to enable the second support unit to reciprocate in the axial direction of the first support unit, the illuminating lamp is driven to ascend and descend synchronously, the limitation of traditional fixed height is broken through, the large-range illumination requirement of scenes such as a meeting room can be met, and close-range illumination of local operation of a workshop can also be adapted; through cooperation of the first locking unit, the second locking unit and the control unit, the first locking unit and the second locking unit move face to face or back to back in the horizontal direction to abut against or be separated from the second support unit, the second support unit is tightly clamped in the abutting process, it is ensured that the height is stable after adjustment, and the second support unit is released in the separation process; and flexible adjustment is facilitated.

The utility model relates to a mounting structure of an arc-shaped dome curtain wall. The mounting structure comprises a main beam, an auxiliary mounting beam and an arc-shaped curtain wall frame, a plurality of main beams are arranged; the auxiliary mounting beams are connected with one another to define a mounting area matched with the mounting contour of the curtain wall, and the auxiliary mounting beams on the edge of the mounting area are fixed to the main beams. The arc-shaped curtain wall frame is arranged on the inner side of the installation area, the arc-shaped curtain wall frame is fixedly installed on the auxiliary installation beam, the arc-shaped curtain wall frame is provided with multiple sections corresponding to the auxiliary installation beam, and the multiple sections of arc-shaped curtain wall frame form an installation frame body of the curtain wall; the arc-shaped curtain wall frame comprises an arc-shaped frame for mounting a curtain wall and a connecting frame; the connecting frame is fixedly mounted on the auxiliary mounting beam, and the arc-shaped frame is mounted on the side, away from the auxiliary mounting beam, of the connecting frame. The arc-shaped curtain wall frame is supported and mounted through the structure, so that the curtain wall can be mounted on a mounting surface formed by the arc-shaped curtain wall frame, and the situation that the curtain wall frame shields the inner side of the curtain wall after the curtain wall is mounted, and the light transmission of the curtain wall is affected is avoided.

The utility model belongs to the technical field of machining, and particularly relates to a milling cutter with a multi-surface machining function, which comprises a cutter post, an inserting head fixedly connected to the bottom end of the cutter post, an inserting rod fixedly connected to the top end of the cutter post, a first blade penetrating and fixedly connected to the inserting head, and a cutter holder penetrating and fixedly connected to the bottom end of the inserting head. The centers of the connecting plug and the tool post are provided with communicated cavities, and adjusting structures are arranged in the cavities of the tool post and the connecting plug; according to the milling cutter, the cutter bar rotates while moving in the vertical direction, so that the height of the cutter bar in the vertical direction is adjusted, the variability of the milling cutter structure is enhanced, the milling cutter can be adjusted according to different machining requirements, and due to the fact that the milling cutter has the height adjusting function, the milling cutter can better adapt to different machining scenes; different machining tasks may have different requirements for the extension length, the working position and the like of the milling cutter, the first blade, the second blade and the cutter bar can be switched, and diversified requirements can be met.

This application discloses a fully digital magnetic field measurement device and method, relating to the field of magnetic field measurement technology. The device generates a constant AC-DC superimposed current signal with adjustable frequency and amplitude, and outputs it to a Hall sensor placed in the magnetic field to be measured. It acquires the Hall voltage generated by the Hall sensor and performs analog-to-digital conversion to obtain a digital Hall signal. The digital Hall signal is quadrature demodulated to extract the in-phase and quadrature components. The magnetic field strength amplitude and phase are calculated based on the in-phase and quadrature components. The current is sampled in real time, and a closed-loop control signal is generated based on the deviation between a preset target current value and the actual sampled value to adjust the AC-DC superimposed current amplitude. Through a fully digital signal processing architecture and closed-loop control and output, high-precision, high-speed, and low-noise measurement of magnetic field strength and direction is achieved.

The utility model discloses a soft package battery cell thickness measuring device, comprising a conveying mechanism comprising a belt and a tray fixed on the belt and used for bearing a battery cell to be measured; the thickness measurement sensing assembly comprises a pressing plate, a pressure sensor and a thickness measurement sensor, and the pressure sensor and the thickness measurement sensor are arranged on the pressing plate; and the lifting mechanism is used for driving the pressing plate to selectively contact with the upper surface of the to-be-tested cell. According to the utility model, the thickness measurement sensing assembly and the lifting mechanism for measuring the thickness of the battery cell are additionally arranged on the PACK logistics line, so that the thickness measurement of the battery cell can be completed without taking down the battery cell in the belt conveying process, the thickness measurement value is stable and reliable, and the production efficiency is improved.

The present application relates to photovoltaic support technical field, more specifically, it is especially related to a kind of photovoltaic multi-degree-of-freedom regulation and control installation support.The present application includes a plurality of parallel photovoltaic components, a plurality of the photovoltaic components all include middle plate, vertical rotation is provided with rotating column at the upper center of the middle plate, rotating column top is provided with rotating seat, rotating seat is rotationally arranged with photovoltaic panel.The rotating column is provided with first helical gear, the side of first helical gear is engaged with second helical gear, second helical gear is fixedly arranged on synchronous shaft, synchronous shaft rotationally arranged on the upper side of the middle plate, the side of the middle plate of first group photovoltaic component is provided with sub plate, motor is provided on the sub plate, the rotating shaft of motor is connected with the synchronous shaft of first group photovoltaic component, the synchronous shaft of adjacent two groups photovoltaic component is detachably connected.The present application can realize the multi-degree-of-freedom regulation and control of photovoltaic panel, adapt to the ground change caused by subsidence, and improve solar radiation receiving efficiency.

The utility model discloses a film coating device for dairy product packaging bag production, which comprises a supporting table, a conveying belt is mounted at the top of the supporting table in a transmission manner, first vertical plates are mounted on the front side and the rear side of the left end of the top of the supporting table, and film coating rollers are mounted on the inner sides of the first vertical plates. The height of the film spraying roller can be conveniently adjusted through the threaded connection of the adjusting screw rod and the fixing frame, the film spraying device can adapt to packaging materials with different thicknesses, the universality of the device is improved, the film pressing roller can compact packaging bags after the packaging bags are subjected to film spraying through the cooperation of the supporting spring and the lifting frame, the phenomena of bubbles and unevenness are effectively reduced, and the production efficiency is improved. According to the packaging bag film spraying device, the film spraying quality is improved, the drying assembly is matched with the draught fan and the heating box, the air outlet pipe is reasonably arranged, packaging bags subjected to film spraying can be rapidly dried, the production efficiency is improved, meanwhile, the stability of the drying temperature is guaranteed through the arrangement of a temperature sensor, and the drying quality of the packaging bags is guaranteed.

The invention relates to the field of copper rod processing, and specifically to an online automatic flaw detection device for copper rods, comprising a limiting tube, a guide wheel, an upper pressure wheel and a flaw detector; the limiting tube comprises a tube body, a first connecting plate and a first base, the first connecting plate is arranged on the first base, the tube body is fixedly arranged on the top of the first connecting plate, and the tube body is arranged in a horizontal direction; along the conveying direction of the copper rod, the guide wheel comprises a first guide wheel and a third guide wheel in sequence, and the flaw detector is arranged between the first guide wheel and the third guide wheel; the first guide wheel is located at the discharge end of the tube body, and an upper pressure wheel is arranged above the first guide wheel; the upper pressure wheel comprises an upper pressure wheel body, a second connecting rod, a second fixed rod and a telescopic rod, the second fixed rod is fixedly arranged in a vertical direction, the second connecting rod is rotatably connected to the second fixed rod, an upper pressure wheel body is arranged at one end of the second connecting rod, and the upper pressure wheel body is located above the first guide wheel; the other end of the second connecting rod is hinged to the telescopic end of the telescopic rod.

The invention provides a balance lifting appliance, and relates to the technical field of lifting. The balance lifting appliance comprises an annular lifting assembly, a rotating device, a lifting device, a ram assembly, a grabbing assembly and a counterweight assembly, the annular lifting assembly comprises an annular rail, the rotating device is slidably connected with the annular rail, the lower end of the rotating device is fixedly connected with the lifting device, and the traction end of the lifting device is connected with the ram assembly. The grabbing end of the ram assembly is connected with the grabbing assembly, and the balance weight end of the ram assembly is connected with the balance weight assembly. The hoisting efficiency of hoisting operation can be effectively improved.

The utility model relates to medical instrument technical field discloses obstetrical and gynecological pregnant woman leg support adjusting frame, including medical bed, the outer wall left side of medical bed is provided with lifting mechanism, the lifting mechanism is used for lifting, the outer wall left side of medical bed is provided with adjusting mechanism, the adjusting mechanism is used for adjusting the distance of support block, the lifting mechanism includes fixed block no.

The utility model relates to the technical field of lifting structure, and specifically discloses a lifting structure for horizontal machining center, which comprises a supporting bottom plate, the top of the supporting bottom plate is fixedly connected with a sliding rail, one end of the top of the sliding rail is fixedly connected with a first motor, the driving shaft of the first motor is fixedly connected with a forward screw rod, the rotation of the forward screw rod drives the rotation of a reverse screw rod, the rotation of the forward screw rod and the reverse screw rod drives the synchronous movement of multiple sets of supporting devices, thereby increasing the coverage range between the multiple sets of supporting devices, facilitating the support of parts of different lengths, supporting the parts by the supporting devices, facilitating the rotary support of the parts while machining on the horizontal lathe, thereby facilitating the rotary support of the parts, and achieving the purpose of conveniently supporting and rotating the parts.

The invention relates to the technical field of conveyors, in particular to a supporting frame for a double-speed chain conveyor, which comprises a first conveyor, a second conveyor, a second conveyor, a third conveyor and a third conveyor, an opening is formed in the surface of the supporting plate, a button is arranged in the opening, a telescopic plate is arranged at the bottom of the supporting plate, an L-shaped plate is fixed to the surface of the telescopic plate, an air cylinder is arranged at the bottom of the first conveyor, a base is arranged at the bottom of the air cylinder, and a transverse rod is arranged on the surface of the base; the plug board is arranged at the bottom of the first conveyor; the device has the beneficial effects that the first conveyor is close to the second conveyor, an inserting block on the surface of a surface supporting plate of the second conveyor is inserted into an opening in the surface of a surface supporting plate of the first conveyor, the height of the first conveyor and the height of the second conveyor are not completely consistent, the inserting block touches a button, and an air cylinder continues to drive a piston rod to move; and the height of the first conveyor and the height of the second conveyor are kept completely consistent until the inserting block does not make contact with the button any more.

The utility model provides a novel MPP power cable protection pipe, and belongs to the technical field of power cable protection pipes. Comprising a protection pipe sleeve; the fixing part is positioned in the protection pipe sleeve and is used for tightening and fixing the cable; the guide part is mounted in the protection pipe sleeve and is used for driving the fixing part to move in the protection pipe sleeve; and the buffer part is mounted on the guide part and is used for relieving the impact of external force on the fixing part so as to enhance the effect of tightening and fixing the cable by the fixing part. According to the utility model, through the arrangement of the guide ring, after the elastic binding ring binds and fixes a cable, the guide ring is driven by the guide column and the pulley to slide in the protection pipe sleeve through the sliding groove, so that the cable can better penetrate through the pipe, and meanwhile, when the straight line where the circle center of the guide ring is located and the straight line where the circle center of the protection pipe sleeve is located are arranged on the same straight line, the cable can pass through the pipe. After a plurality of groups of protection pipelines are mutually welded, the cable can be kept at a stable height, and voltage instability of the cable is prevented.

The utility model discloses a hedge trimmer with a damping function, and relates to the technical field of hedge trimmers, the hedge trimmer comprises a hedge trimmer body, the two side end portions of the hedge trimmer body are both provided with supporting assemblies, each supporting assembly comprises a supporting clamping seat, a sliding guide block, a buffering sliding sleeve and a bearing frame, a buffering sliding sleeve in butt joint with the sliding guide block is fixedly installed in each bearing frame, a multi-section sleeve connected with the bearing frame is fixedly installed at the bottom end of each sliding guide block, and a reset spring used for pushing the bearing frame is fixedly installed in each multi-section sleeve. Due to the fact that the buffering sliding sleeve has good elasticity and flexibility, in the supporting and moving process of the bearing frame, the buffering sliding sleeve firstly bears impact force and can absorb part of vibration energy through elastic deformation of the buffering sliding sleeve, and on the basis of preliminary buffering of the buffering sliding sleeve, the multiple sections of sleeves can be compressed in a multi-stage mode. And vibration energy can be gradually absorbed and consumed.

The present invention belongs to the technical field of marine equipment, and specifically discloses a cable release device for a marine seawater sampler. The cable release device for the marine seawater sampler includes a frame, the frame is rotatably connected to a rotating shaft, the rotating shaft is fixedly connected to a rotating drum, a cable is wound around the rotating drum, the frame is fixedly connected to a first fixed frame, the rotating shaft is fixedly connected to a first gear, the first gear is fixedly connected to a first rotating member, the first fixed frame is fixedly connected to a fixed member, the first rotating member is fixedly connected to a first plate, and the fixed member is sealingly and slidably connected to a second plate. The present invention blocks the cavity between the first rotating member and the fixed member by the second plate, thereby locking the rotating drum, and the sampler starts working in the sea area of ​​the target depth, preventing wear and poor locking effect caused by conventional friction locking, while avoiding unnecessary losses, increasing the service life of parts, and reducing the frequency of parts replacement.

An aerated concrete blank cutting line cleaning tool comprises a cleaning mechanism, the cleaning mechanism is provided with a supporting shaft rotationally arranged in a first inner cavity and permeable cleaning cotton located on the supporting shaft, and the supporting shaft is provided with a through hole assembly for inputting water into the cleaning cotton; the wax dipping mechanism is provided with a heat conducting plate which hermetically slides to divide the second inner cavity into an upper part and a lower part, and a suspension block of which the peripheral side is matched with the inner wall of the upper part of the second inner cavity and the density is smaller than that of the wax liquid; an injection hole connected with a water pressure source is formed in the upper part of the second inner cavity and is sealed through a suspension block; the suspension block is provided with a hole assembly connected with the lower portion of the second inner cavity, and when the suspension block descends by a certain height, one end of the hole assembly is connected with the injection hole. The device is simple and compact in structure, different cleaning modes of disintegrating slag on a cutting line are achieved, excessive water consumption and large noise are avoided, the height of the liquid level of wax liquid is adjusted under the conditions that non-electric equipment is adopted and the detection precision is not affected, and the device is more convenient to use.

The utility model provides a dry -type transformer with prevent coil collapse function, including high -voltage winding mould and coil, is provided with the anti -collapse structure along the axial direction of high -voltage winding mould interval, and the anti -collapse structure is composed of grid board cushion block and glass silk belt, and the grid board cushion block annular array distribution is on the outer surface of high -voltage winding mould, and the glass silk belt is wound on the grid board cushion block, and the anti -collapse structure corresponding glass silk belt winding corresponding grid board cushion block at least one circle is obliquely pulled to adjacent anti -collapse structure, coil is provided with multiple sections, and each section coil is wound on the outer surface of high -voltage winding mould between the anti -collapse structure. The utility model discloses in the actual application process, even if dry -type transformer is disturbed by the vibration, because the inner ring of coil is close to high -voltage winding mould and will be blocked by the grid board cushion block, so that the spacing between each section coil can keep invariant, satisfies the safety spacing requirement between the coil, can effectively prevent coil collapse, ensures the coil height stability.

The invention belongs to the technical field of surgical operation tools, and particularly relates to a surgical operation retractor which comprises a balance weight stand column and two base assemblies, a vertical sliding groove is formed in the right side of the balance weight stand column, an adjusting screw rod is installed on the inner side of the middle of the vertical sliding groove, the adjusting screw rod is connected with the balance weight stand column through a bearing, and the number of the base assemblies is two. The two base assemblies are connected through a scissor-fork type telescopic rod, an outer ring is fixedly connected to the side, away from the scissor-fork type telescopic rod, of the base assembly on the right side, an inner ring is installed on the inner side of the outer ring through a bearing, retracting assemblies are symmetrically arranged on the inner side of the inner ring, and a first positioning hole is formed in the outer edge of the outer ring. Third positioning bolts are connected into the first positioning holes in a threaded mode, and two second positioning holes are formed in the outer edge of the bottom of the inner ring. The positions of the two retracting assemblies can be conveniently and rapidly adjusted, and the retractor is conveniently suitable for retracting incisions in different directions.

The utility model relates to cold firework rotating waterfall type spraying equipment which comprises a rack, an assembling mechanism, a spraying mechanism, a feeding mechanism and a driving mechanism, the rack comprises a mounting plate, a first shell and a second shell are arranged at the bottom of the mounting plate at intervals, and a containing space is formed between the first shell and the second shell; the injection mechanism is arranged in the containing space and comprises an air source and an injection pipe which are communicated with each other, an injection opening of the injection pipe is arranged downwards, and the injection pipe is rotationally arranged on the rack; the feeding mechanism is arranged in the first shell and communicates with the injection pipe along the rotating axis of the injection pipe, and the injection pipe is rotationally arranged relative to the feeding mechanism; the driving mechanism is arranged in the second shell, and the rotating end of the driving mechanism is connected with the injection pipe; the cold firework rotating waterfall type eruption equipment can be hung at a high position, the spraying pipe can rotate in the eruption process, the pipe opening faces downwards, the cold firework effect like a waterfall is provided, the supply stability of cold firework raw materials can be guaranteed, and therefore it is guaranteed that the fireworks are continuous in the rotating process, and the height and the like of the fireworks are kept stable.

The application discloses a gravity and magnetic inversion method based on grid merging and BTTB matrix fast forward, relates to the technical field of gravity and magnetic exploration, and comprises the following steps: establishing a basic forward and inversion grid and a basic grid kernel function matrix; initializing a coarse grid model and a conversion matrix; coarse grid inversion; adaptive grid subdivision based on a model gradient and establishment of a new conversion matrix; fine grid inversion; iterative convergence and output. The application has the beneficial effects that the BTTB kernel function matrix is calculated based on the basic grid in advance, the conversion from fine scale model parameters to coarse scale model parameters is realized through the conversion matrix, the iterative closed loop process of coarse grid inversion, adaptive grid subdivision and fine grid inversion is adopted, the criterion of adaptive grid subdivision is to compare the gradient eigenvalue of the current inversion model parameters with a preset threshold value, and in the grid inversion of different scales, the BTTB kernel function matrix generated by the same set of basic grid in advance is used to realize fast forward through the processing of the conversion matrix.

The utility model belongs to the field of measuring devices, particularly relates to an accurate measuring device, and aims to solve the problems that the practicability and the efficiency of the device are reduced and the accuracy and the reliability of a measuring result are influenced due to the fact that an existing device cannot have remarkable advantages in the aspects of supporting, folding storage and lifting, the following scheme is provided: the accurate measuring device comprises a supporting seat, a rotating disc is rotatably arranged at the top of the supporting seat, a supporting frame is fixedly arranged at the top of the rotating disc, rotating rods are rotatably arranged on the two sides of the supporting frame in a penetrating mode, and the same measuring instrument is fixedly arranged on the sides, close to each other, of the two rotating rods; and the auxiliary assembly is arranged on the supporting base and used for supporting, folding, storing and lifting the device. By arranging the auxiliary assembly, the device has remarkable advantages in the aspects of supporting, folding storage and lifting, not only can the practicability and efficiency of the device be improved, but also the accuracy and reliability of a measurement result can be ensured, and powerful support is provided for measurement work.

The utility model provides an offshore oil drilling rapid assembly drill bit which comprises a connector, the top of the connector is movably connected with an installation column, a sliding groove is formed in the inner side of the connector, the bottom of the installation column is movably connected to the interior of the connector, a bolt is arranged on the outer side of the connector, and the sliding groove is formed in the inner side of the connector. The inner side of the bolt penetrates through the connector and extends into the mounting column, a threaded hole is formed in the surface of the mounting column, the inner side of the bolt is movably connected to the interior of the threaded hole, the top of the mounting column is movably connected with a blade, a limiting groove is formed in the top of the mounting column, and through the connector and the mounting column, the blade is movably connected to the top of the mounting column. When the drill bit is assembled or maintained and replaced, the damaged part can be disassembled, the maintenance efficiency of the drill bit is improved, a worker can replace and use the drill bit conveniently, and when the installation column is installed and fixed, a bolt is accurately inserted into the threaded hole, the installation column is stably fixed, and the drill bit is prevented from being damaged in the use process.