24results about How to "Highly stable" patented technology

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 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 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 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 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.

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 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 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.

This invention discloses a carbon-plastic bipolar plate for a zinc-bromine flow battery, its preparation method, and its application, belonging to the field of electrochemical energy storage technology. The method includes: dispersing nitrogen-doped hollow carbon nanotubes and spraying them onto the positive electrode side of a carbon-plastic bipolar plate; after drying, a nitrogen-doped hollow carbon nanotube-modified positive electrode carbon-plastic bipolar plate is obtained; dispersing boron-nitrogen co-doped carbon and spraying it onto the negative electrode side of a pretreated carbon-plastic bipolar plate, after drying again, a boron-nitrogen co-doped carbon-plastic negative electrode carbon-plastic bipolar plate is obtained. On the positive electrode side, the nitrogen-doped hollow carbon nanotubes catalyze the bromine reaction through nitrogen doping, reducing the overpotential; the hollow structure adsorbs bromine species and uses charge action to inhibit bromine permeation, reducing self-discharge. On the negative electrode side, the boron-nitrogen co-doped carbon uses B-N zinc-loving sites to guide uniform and dense zinc deposition, inhibiting dendrite formation; and inhibits hydrogen evolution through charge regulation. Both methods synergistically improve the bromine barrier performance, reaction kinetics, and dendrite suppression ability of the carbon-plastic bipolar plate.

The utility model discloses an adjustable deck chair based on music therapy, and relates to the technical field of rehabilitation equipment. The adjustable deck chair comprises a deck chair body, the top of the deck chair body is fixedly connected with a music pillow, and the outer wall of the deck chair body is fixedly connected with an adjusting assembly and a rotating assembly; through a sliding box, a sliding block, a spring and a clamping block structure, the deck chair can achieve multi-stage height adjustment, the height stability of the deck chair in the using process is guaranteed by combining the limiting effect of a fixing block, and through clamping engagement of a fluted disc and a tooth groove and magnetic assistance of a first magnetic block and a second magnetic block, the angle of the handrail can be adjusted at will within a certain range; different arm placement requirements of a user are met, a comfortable angle can be found whether the user naturally droops during rest or supports the user during reading and operating electronic equipment, and arm fatigue is relieved.

The utility model relates to a kind of vertically shore power box up-down movement operation bearing device, including guide frame and mobile power receiving platform;The guide frame is set in the side of approach pier and supports mobile power receiving platform along vertical direction, the mobile power receiving platform side is provided with operation member, the slider assembly is equipped on the operation member, double track is equipped on the guide frame, the slider assembly slides along the double track, the slider assembly includes two Y direction slider and an X direction slider, the Y direction slider is installed in the both sides of track and is used to limit vertical direction movement, the X direction slider is arranged in platform bottom and is used to limit horizontal direction displacement.The utility model can effectively adapt to different water level change, realize the stable butt joint of ship and shore power facility, ensure that power supply process is safe and reliable, improve the reliability and security of port shore power facility.

The invention relates to the technical field of rare earth extraction sealing equipment, in particular to automatic water injection water sealing equipment of a rare earth extraction production line, which comprises a water injection mechanism, a water sealing mechanism, a flow guide channel and a drainage channel, the water injection mechanism is connected with the lower part of the water tank; the water seal mechanism is connected with the stirring shaft; the flow guide channel is formed in the water injection mechanism; the drainage channel is connected between the water injection mechanism and the water tank; the conical spiral pipe capable of rotating along with the stirring shaft at the same speed rotates in the water seal inner tank, water at the bottom of the outer ring of the water seal inner tank is pumped to the upper portion of the inner ring, the water injection mechanism capable of adjusting the water injection speed along with the water surface height of the inner ring is arranged, and the water surface height of the inner ring is stabilized; the problems that due to high-speed rotation of the stirring shaft, the outer ring is high, the inner ring is low and negative pressure is formed at the position of the inner ring in sealing water in the water seal tank under the action of centrifugal force, and the sealing performance of the water seal becomes poor are solved.

The utility model belongs to the field of cashier card readers, and particularly relates to a portable cashier card reader device, which comprises a placement seat, a plurality of fixed suction cups are mounted at the bottom of the placement seat, a rotating disc is rotatably mounted at the top of the placement seat, a vertical column is fixedly mounted at the top of the rotating disc, a U-shaped plate is arranged above the vertical column, and the U-shaped plate is arranged above the vertical column. A cashier card reader is rotationally installed in the U-shaped plate, and an adjusting mechanism is arranged between the U-shaped plate and the stand column. A rotating shaft is rotatably installed on the inner walls of the two sides of the U-shaped plate, a rotating seat is fixedly installed on the rotating shaft, the cash register card reader is fixedly installed on the rotating seat, the front end of the rotating shaft extends to the front of the U-shaped plate and is fixedly provided with a rotating plate, and an insertion mechanism is arranged between the rotating plate and the U-shaped plate. According to the utility model, the design is reasonable, angle and height adjustment and direction rotation are realized by using the insertion mechanism, the adjusting mechanism and the rotating structure, the stability, the flexibility and the operation convenience are realized, and the transaction efficiency is improved.

The invention relates to the technical field of PEM electrolytic bath systems, in particular to a liquid level and temperature-based multi-modal control PEM electrolytic bath system and method, the system comprises a water tank, an electrolytic bath unit, a heat exchange recovery unit and a control unit, and the heat exchange recovery unit comprises a hydrogen side gas intercooler, an oxygen side gas intercooler and a gas-water separator. According to the method, the liquid level sensor judges that the water tank is in an extremely low liquid level, a normal liquid level or a more-water state, and three control modes are correspondingly triggered. The core lies in that in a normal liquid level mode, a control unit calculates the needed system water inlet flow M0 in real time through a heat balance equation according to the target temperature Tt of a water tank, the water inlet temperature T0 and the multi-path return water temperature and flow from a heat exchange recovery unit, the power of a PTC heater is dynamically adjusted, and therefore deep cooperation of liquid level management and temperature control is achieved. Electrolytic reaction waste heat can be recycled to reduce the overall energy consumption of the system, water temperature fluctuation in the water supplementing process is effectively restrained, and stable and efficient operation of the electrolytic bath is guaranteed.

The utility model discloses a combined type bioreactor, including bottom plate, transparent bucket body, sealing end cover, support plate, fixed flow guide cylinder, movable flow guide cylinder, fixed link, arc connecting plate, control ring, air distributor, air inlet pipe and stirring mechanism. Transparent bucket body installs on the bottom plate, and the top is sealed through the sealing end cover, and support plate installs in the center of bottom plate and supports fixed flow guide cylinder, and the movable flow guide cylinder of adjustable height is equipped with on the flow guide cylinder top, and movable flow guide cylinder realizes height locking through fixed link and control ring. Air distributor is equipped below fixed flow guide cylinder, and is connected with external air inlet pipe, realizes even gas dispersion. Motor drives stirring rod to carry out mechanical stirring, promotes culture solution circulation and mixes. The structure can flexibly adjust flow guide cylinder position according to liquid level height, improves mixing uniformity and oxygen utilization efficiency, enhances operation adaptability and sealing safety, is applicable to microbial culture and reaction under different working conditions.

The utility model relates to the technical field of automobile manufacturing, especially to a vehicle welding fixture, including fixed base, still including support seat, elevating seat, pneumatic clamp, first air cylinder and connecting plate, wherein, support seat fixedly arranged at the top of fixed base, elevating seat is along vertical sliding to set up in one side of support seat, one end of pneumatic clamp is fixedly arranged on elevating seat, and the other end is with the top of support seat up and down cooperation, to be used for clamping work piece, by setting first air cylinder drive two connecting plate vertical overturn to make elevating seat move up and down, to realize the adjustment of clamping height, when needing to change the clamping height of fixture, do not need to replace the whole fixture, the process is relatively simple and convenient, effectively improve production efficiency, at the same time, when the welding passageway below the work piece to be welded is narrow, can through the mode of adjusting the clamping height and raise work piece, to make the vertical width of welding passageway increase, the welding torch is convenient to enter welding passageway and carry out welding operation.

The utility model relates to the technical field of circuit boards, and discloses an adjustable fixture for fixing an auxiliary circuit board, which comprises a main body frame, two groups of supporting plates arranged on two sides in the main body frame and an angle adjusting component connected with the main body frame, a height adjusting component assembled below the angle adjusting component, and a height adjusting component assembled below the height adjusting component. During angle adjustment, the second plug pins are pulled out to unlock the traction plate and the supporting rods, the rotary knobs are twisted to loosen the rotary shafts, the traction plate is driven to slide in the sliding grooves through the clamping seats, the inclination angle of the upper die base is adjusted, and the positioning plates and the supporting rods assist in guiding; after the mold is adjusted to a proper angle, a knob is screwed, a connecting rod I is pulled to insert a bolt II into a corresponding slot hole, and the angle is locked through clamping of the connecting rod and positioning of the bolt, so that the angle stability during working of the mold is ensured, and the machining requirements of different circuit boards are met.

This application discloses a portable storage rack for RVs, belonging to the technical field of storage racks. The portable storage rack for RVs includes multiple storage frames, each with a storage tray fixedly connected inside. Fixed strips are fixedly connected to both sides of each storage frame, and an adjustment component is provided between two of the fixed strips. A sliding groove is formed through the interior of each fixed strip. Loosening the fixing knob allows the storage frame to unfold. The first and second support strips rotate around a connecting shaft, and the sliding cylinder slides along the sliding groove, smoothly unfolding multiple storage frames to accommodate different storage height requirements. After unfolding, tightening the fixing knob fixes the sliding cylinder in the corresponding position of the positioning groove, ensuring the storage rack's height is stable. When not in use, pushing the storage frame causes the support strips to rotate in the opposite direction, retracting the storage frame. Tightening the fixing knob then secures it. The operation is convenient, and it doesn't take up much space when folded, making it suitable for the limited space environment of an RV and easy to carry.