15results about How to "Avoid stress damage" patented technology

This utility model relates to the field of workpiece processing technology, and discloses a positioning component and a turning device. The positioning component includes a base plate assembly. At least one workpiece groove is formed on the first side plate of the base plate assembly. The workpiece groove is used for embedding and fixing the first end of the workpiece while exposing the second end for processing. An air supply connector is formed on the base plate assembly, and an air outlet is provided in the workpiece groove. The air supply connector and the air outlet are connected by an air duct. This design combines versatility and safety, achieving reliable workpiece fixation while simplifying the structure, avoiding stress damage during the turning process, and adapting to the load-bearing and turning requirements of workpieces of different shapes. It solves the technical problem that existing fixtures have limited applicability and are prone to workpiece damage during movement.

The application discloses an open-rotation flexible control method and system for engineering machinery, which realizes different judgments on the rotation state by setting a pilot valve current-operation time curve, and formulates different curves suitable for valve current changes according to different rotation states, controls the rotation in the running processes of starting, accelerating, stable running, decelerating, stopping and the like and the different operations of the operation hand on the rotation, such as micro-adjustment, acceleration stopping, high-speed stopping, micro-adjustment reverse, acceleration stopping reverse and high-speed stopping reverse, guarantees the flexibility of the rotation control, avoids the occurrence of the phenomena of jamming, vibration and air suction, makes the rotation action stable and flexible, and makes the driver feel comfortable.

The utility model discloses a PCB punching device which structurally comprises a workbench and pressing plates, PCBs are placed on a placing plate, a first motor drives a first lead screw to enable the pressing plates on the two sides to move inwards under the action of pushing force, the pressing plates enable the PCBs to be close to each other, attached to each other and clamped, and therefore the PCBs can be punched. And meanwhile, a second electric push rod at the upper end downwards pushes a lower pressing plate to downwards press the PCB again, so that the stability of the PCB during punching is better, the deviation condition is reduced, the condition that the PCB is damaged during pressing due to excessive stress can be prevented under the action of a first pressure sensor and a second pressure sensor, the safety is higher, and the production efficiency is improved. And a drill bit at the bottom end can move left and right under the condition that a second motor drives a second screw rod, and a stress sliding block can drive the drill bit to move front and back under the condition that a third motor drives a third screw rod, so that the punching work of different positions of the PCB can be realized, the working efficiency is higher, the time for manually adjusting the direction is saved, and the working progress is accelerated.

This utility model discloses an optical fiber coiling device, an optical engine, and an optical module, including a coiling frame and a limiter. The coiling frame has a first surface and a second surface facing each other. The second surface is provided with slots for accommodating or aligning the first and second optical components. The first surface is provided with an arc-shaped coiling channel, a coiling structure, and multiple positioning blocks. The limiter cooperates with the first surface of the coiling frame. After the first optical fiber leading from the slot of the first optical component on the second surface reaches the first surface, it is coiled and limited within the arc-shaped coiling channel. The second optical fiber leading from the slot of the second optical component on the second surface is guided and limited to be led out along a non-coiling path. This utility model achieves effective management and reliable fixation of different optical fiber paths, ensuring the bending radius of the optical fiber. At the same time, the coiling frame integrates an optical component protective cover and auxiliary sealing function, effectively optimizing the internal space of the module, simplifying the assembly process, and improving the reliability and production efficiency of the optical module.

This invention relates to the field of compressor technology, specifically to a multi-stage cycle energy-saving BOG compressor unit, comprising a valve, which includes a valve seat, a lift limit plate, a valve plate, a spring assembly, and a sealing gasket. The valve seat has a first gas passage. The valve plate is located between the lift limit plate and the valve seat, with its side facing the valve seat serving as a sealing surface. The valve plate also has a second gas passage. The spring assembly, located between the lift limit plate and the valve plate, drives the valve plate to move closer to the valve seat. The sealing gasket is located on the sealing surface, is annular, and corresponds vertically to the first gas passage. The sealing gasket has an arc-shaped cross-section along its radial direction, forming an arc-shaped guiding surface. When the valve plate moves away from the valve seat, the arc-shaped guiding surface guides gas from the first gas passage into the second gas passage, reducing the impact of gas on the valve plate's sealing surface and extending the valve's service life.

The utility model belongs to solar heating technology field, specifically disclose a box body light -concentrating type solar medium temperature heat collector, the utility model discloses a sealed box body of one side glass cover, the bottom and the side surface of box body are equipped with heat preservation layer, be equipped with upper flow collecting pipe and lower flow collecting pipe in the box body, be equipped with at least two fin heat absorption unit between heat preservation layer and glass cover, the both ends of fin heat absorption unit are connected with the upper flow collecting pipe and lower flow collecting pipe of the intercommunication box body respectively, fin heat absorption unit includes fin adsorption pipe and reflector, and fin adsorption pipe sets up at the light -concentration of reflector surface. The utility model discloses the synergistic effect of metal light -concentrating structure and straight -through type flow channel design, can realize the stable output of medium temperature, improve the pressure intensity of system output, improved the reliability of medium temperature pressure bearing. The utility model can be widely applied to the light -heat conversion field of solar energy.

The invention relates to the technical field of motor homes, in particular to a current sharing control method and system. Comprising the following steps: acquiring PID values of total constant voltage output, total current output, first current output, first constant voltage input, second current output and second constant voltage input; the minimum value in the first path and the second path of related PID values is taken as the corresponding reference control quantity; the reference control quantity and the current-sharing compensation quantity are superposed to obtain a corresponding outer-loop control signal, the inductive current is tracked according to the outer-loop control signal to obtain a corresponding inner-loop control signal, the inner-loop control signal and the feed-forward quantity are superposed to obtain two paths of corresponding PWM driving signals, and control is performed based on the PWM driving signals; according to the scheme, a system safety boundary is constructed through a minimum value competition mechanism, and an adjustment mode of independent PID current sharing compensation, reference control quantity and feedforward quantity superposition is combined, so that the response time for generator voltage fluctuation and load abrupt change is shortened, and the current sharing precision and the system stability are effectively improved.

This invention relates to a lithium-ion battery electrode surface trimming system and method. The system includes a morphology detection device, a control unit, a multi-axis motion device, and a plasma jet processing device. The method acquires full-width three-dimensional morphology data of the dried electrode in real time, identifies excessively thick regions, generates a scanning processing path and process parameters, and controls an atmospheric pressure plasma jet to scan along the planned path. Using a combined physical sputtering and chemical etching mechanism, it non-contactly trims the thickness of the excessively thick regions and simultaneously performs in-situ plasma activation on the newly exposed surface. This invention enables online trimming of electrodes with micron-level precision, operates at temperatures below 150°C, and eliminates solid dust pollution. It simultaneously improves electrode thickness uniformity and interfacial adhesion and wetting performance, effectively enhancing the cycle life, consistency, and safety of lithium-ion batteries, and is suitable for large-scale continuous production.

The utility model relates to the technical field of LED screens, and discloses a display LED screen convenient to replace, which comprises a frame and a plurality of LED screen bodies mounted in the frame, a support frame is fixedly connected to the inner wall of one end, far away from the LED screen bodies, of the frame, and connecting frames are fixedly connected to one sides, close to the support frame, of the LED screen bodies. Inserting plates are fixedly connected to the other sides of the connecting frames, a plurality of fixing boxes are fixedly connected to the sides, close to the connecting frames, of the supporting frames, inserting openings are formed in the fixing boxes, the inserting plates are connected with the inserting openings in a sliding fit mode, and limiting assemblies and auxiliary pushing assemblies are connected to the interiors of the inserting openings; the limiting assembly and the auxiliary pushing assembly abut against the inserting plate. According to the display LED screen convenient to replace, the LED screen body can be locked after being inserted through sliding fit of the inserting plate and the inserting opening of the fixing box and combination of the automatic reset function of the limiting wedge block under the action of the pushing spring, tools such as a suction cup and a screwdriver are not needed, and convenience and rapidness are achieved.

The utility model discloses a kind of modularization connecting devices of heating furnace fuel gas soft connection, it is related to fuel gas delivery technical field.The modularization connecting device of heating furnace fuel gas soft connection, including furnace body, the support seat is fixedly installed in furnace body side, support seat is fixedly installed with inlet end, the flange end face of inlet end is closely attached with sealing ring, the end face of the flange of gas outlet flange is closely attached with the side of sealing ring away from inlet end, and the flange between inlet end and gas outlet flange is fixedly connected by four fastening bolts, the other end of gas outlet flange is fixedly installed with bellows, floating frame is rectangular ring structure and is set in bellows outside, the other end of bellows is fixedly installed with gas inlet flange, and the flexible characteristic of bellows can compensate displacement generated by vibration, thermal expansion and contraction, avoid stress damage of rigid connection, ensure fuel gas transmission continuous stability, overall structure gives consideration to security, stability and maintenance convenience, improve device operating reliability and durability.

The utility model discloses a kind of thin-wall plastic injection mould, including fixed mould, the upper end of fixed mould is equipped with runner, the lower end of fixed mould is equipped with lug, the top of fixed mould inside is equipped with hydraulic ram a, the output end of hydraulic ram a is connected with mold split, the front and rear ends of mold split are all penetrated by guide rod, the upper end of guide rod is connected with fixed mould;The upper end of mold split is equipped with movable mould, the inside of movable mould is penetrated by slide rod, and the one end between slide rod and movable mould is connected with spring a, the lower end of slide rod is connected with mold split;The left and right sides of mold split are all equipped with rotating rod.The thin-wall plastic injection mould moves by driving mold split, so that mold split and movable mould are separated from fixed mould, simultaneously drive adjusting plate to rotate, control movable mould to move and mold split to separate, realize the first stage separation stripping of plastic part, this separation mode guarantees that each position of plastic part is balanced, avoid its small area top and cause stress damage.

The utility model discloses an intraocular lens frock clamp, including base, the base is the hollow cavity structure setting of top opening, the inside wall of base is equipped with the piston of sliding, the inside wall of base is equipped with support, the fixed plug rod has on the support, the edge of piston is equipped with a level of suction accessory one week, the plug rod top is equipped with two level suction accessories, the elastic piece is equipped between the piston and support, the piston makes a level of suction accessory higher than two level suction accessories under the action of elastic piece, the bottom of base is equipped with negative pressure generating part. The utility model belongs to the technical field of clamp, and specifically refers to a kind of intraocular lens frock clamp.

The invention discloses a chassis key actuator-oriented adaptive priority redundant power supply method and system, and relates to the technical field of chassis drive-by-wire, input end voltage, node voltage and link current of a double-path power supply link are collected, recursive filtering is carried out, an impedance value is constructed based on voltage drop and current, and the line health degree is calculated by combining baseline impedance; generating a residual capacity coefficient according to the output power and the maximum power, and identifying a vehicle running state; generating a fault mark through continuous confirmation by using the filtering voltage and the health degree, calculating distributable total power based on a spare link residual capacity coefficient, and setting a priority coefficient to generate a target power upper limit and a power supply sequence; isolation is performed on a fault link through residual current and voltage drop, bus discharge is performed in a motor branch, and the duty ratio slope is associated with a residual capacity coefficient to complete soft start and determine stable power supply; and mapping the power upper limit into a torque upper limit, an action frequency and a permission condition, and executing cooperative control and returning.

A thyristor assembly with multiple combined chips comprises a shell and a base, the base is provided with at least three groups of chipsets which are combined to form a rectangular shape, and each chipset comprises a chip, an electrode, a first conductive plate, a second conductive plate, a third conductive plate and a fourth conductive plate. The first current-conducting plate, the second current-conducting plate, the third current-conducting plate and the fourth current-conducting plate are spliced to form a rectangular shape. The at least two chip sets are arranged on the same base in parallel, and the four current-conducting plates are spliced into the rectangle, so that the internal space of the shell is fully utilized, the whole assembly is more compact, the tedious procedure of selecting from multiple groups when three or more groups are formed by two chips as one group in the prior art is eliminated, and the production efficiency is improved. Therefore, the installation efficiency and the assembly consistency are obviously improved. The overall structure is reasonable, the space utilization rate is high, material waste is reduced, the size of the shell is reduced, miniaturization design and on-site rapid replacement of equipment are facilitated, and the system integration degree and operation and maintenance convenience are further improved.

The invention relates to an anti-static display screen and electronic equipment, and belongs to the technical field of display modules.The anti-static display screen comprises a backlight module, the backlight module comprises a conductive frame, a light guide plate arranged in the conductive frame, a liquid crystal module and a transparent conductive layer arranged on the conductive frame, the transparent conducting layer is arranged on the side, close to the light guide plate, of the liquid crystal module, a plurality of positioning holes are formed in the edge of the transparent conducting layer at intervals, the columnar conducting pieces are arranged on the conducting frame at intervals, and the bottom ends of the columnar conducting pieces are electrically connected with the conducting frame; each columnar conductive piece penetrates through the corresponding positioning hole and abuts against the liquid crystal module. The outer wall of the columnar conductive part abuts against the hole wall of the positioning hole in an interference mode so as to apply tension force to the transparent conductive layer, and meanwhile static electricity on the transparent conductive layer is led out through the conductive frame. By means of the conductivity of the columnar conductive piece and cooperation between the columnar conductive piece and the transparent conductive layer, static electricity in the display module is eliminated, and meanwhile light transmission is guaranteed.