17results about How to "Avoid uneven stress" patented technology

A method for forming a semiconductor structure comprises the following steps: providing a wafer which comprises an isolation region and a device region; forming a device structure on the device region, wherein the device structure comprises a first layer structure and a second layer structure on the first layer structure; an isolation structure located on the wafer is formed, the isolation structure is located on the isolation area and located on the area outside the device structure in the device area, and the device structure is located in the isolation structure; acquiring whether the second-layer structure and the first-layer structure have electrical failure or not; if the second-layer structure and the first-layer structure are in electrical failure, obtaining offset conditions of the second-layer structure and the first-layer structure in a first direction; and according to the offset condition of the second layer structure and the first layer structure in the first direction, carrying out laser annealing treatment on the wafer to enable the second layer structure and the first layer structure to recover electrical connection. According to the method, the stress condition of the semiconductor structure is improved.

The invention provides an aluminum alloy bar reducing casting device and method, and relates to the technical field of casting, the device comprises a tundish, a crystallizer, a structure control device and a traction device; the structure control device is composed of a first sleeve and a cooling module, a reducing cavity is formed in the first sleeve, the inner diameter of the reducing cavity is gradually reduced from the first end to the second end, and the reducing cavity is used for cooling and solidifying the solid-liquid aluminum alloy bar; the traction device comprises a traction head forming die and a power device, the traction head forming die is located at the second end of the reducing cavity, and the power device drives the traction head forming die to move horizontally to pull out the aluminum alloy bar; through plastic deformation and cooling solidification in the reducing cavity, internal defects such as shrinkage porosity of the aluminum alloy are eliminated, grains are refined, and the structure is more compact and uniform; the traction force is improved through tight connection of the traction head and the bar, and the stability of the continuous casting process is enhanced; and the traction rate is accurately adjusted by the power device, so that the aluminum alloy bar which is compact in structure and small and uniform in grain size can be obtained.

The utility model discloses a transmission device and transmission equipment which are used for avoiding off tracking, abrasion or breakage caused by uneven stress of a belt. The device comprises a driving mechanism and a driven mechanism, a driving wheel is arranged on the driving mechanism, a driven wheel is arranged on the driven mechanism, and the driving wheel and the driven wheel are distributed on the same side of the driving mechanism and the driven mechanism; a first limiting plate is arranged at one end, far away from the driving mechanism, of the driving wheel; a second limiting plate is arranged at the end, away from the driven mechanism, of the driven wheel, and the driving wheel and the driven wheel are connected through a belt to achieve transmission.

The utility model discloses a toothpaste containing sleeve capable of containing various flavors, which relates to the technical field of toothpaste and comprises a containing sleeve body, an extrusion mechanism and a transmission mechanism are arranged in the containing sleeve body, cavities are arranged on two sides of the containing sleeve body, the extrusion mechanism comprises two threaded rods, and the threaded rods are connected with the transmission mechanism. The two ends of the two threaded rods are rotationally arranged in the inner walls of the two cavities in a sleeved mode correspondingly, and the outer surface of each threaded rod is in threaded connection with a sleeve block. By arranging the two cavities, the device can contain two kinds of toothpaste with different tastes at the same time, the squeezing mechanism and the transmission mechanism are arranged to be matched with each other, the two kinds of toothpaste with the different tastes can be squeezed for use, the corresponding threaded rods can be rotated by rotating the rotating rods, and therefore the toothpaste with the different tastes can be squeezed and used conveniently. And by arranging an extrusion roller, the utilization rate of the toothpaste can be increased in a rolling extrusion mode, and the toothpaste squeezing device is more practical.

This utility model relates to the field of mold base technology, specifically a mold base structure for quick mold replacement. It includes a base with four guide grooves at its four corners. These guide grooves are used to engage with guide posts of external equipment for guidance. Multiple fixing holes are provided on the side of the base adjacent to the guide grooves for fixing the base to an external support device. An assembly groove is provided on the side of the base adjacent to the fixing holes. Four assembly screw holes are provided at the four corners of the assembly groove. An assembly mechanism is installed in the assembly groove via bolts. The outer circumferential surface of the assembly mechanism is clearance-fitted with the inner wall of the assembly groove, enabling rapid mold positioning and replacement. This utility model achieves rapid self-correction and positioning of the mold through the guiding engagement of the sliding block and the sliding groove, and the self-centering structure of the positioning groove, significantly improving mold replacement efficiency. Furthermore, based on modular assembly and locking mechanisms, it ensures stable collaborative positioning, avoids uneven stress, and improves assembly reliability.

The application relates to the technical field of back contact solar cells, in particular to a back contact solar cell, a printing screen assembly and a photovoltaic module. The back contact solar cell comprises two-polarity current collection grid lines, two-polarity solder pads and connecting grid lines. The two-polarity current collection grid lines are arranged on the back surface. The current collection grid lines are at least one row; each row of the current collection grid lines comprises a plurality of current collection grid lines with the same polarity and arranged at intervals along a first direction; the plurality of rows of the current collection grid lines are arranged at intervals into a plurality of columns along a second direction; and the plurality of columns of the current collection grid lines are arranged at intervals along the first direction, so that the adjacent two columns of the current collection grid lines have a fracture area. On each fracture area, the current collection grid line with the same polarity as the polarity of the solder pad is a same-polarity current collection grid line, the current collection grid line with the opposite polarity to the polarity of the solder pad is a different-polarity current collection grid line, at least one row of the same-polarity current collection grid lines is connected with the solder pad, and at least one row of the different-polarity current collection grid lines is connected with the connecting grid line.

The invention relates to a working cylinder, in which the cylinder has a coupling section with a coupling ring and a locking body for coupling a closure part to a cylinder tube end section, the cylinder tube has a circumferential inner annular groove at the end section of the cylinder tube and the closure part is axially pushed into the end section of the cylinder tube and has an axially distal outer annular groove which is open on one side, the inner annular groove and the outer annular groove forming an annular groove space in which a coupling ring is arranged and which is radially surrounded by the inner annular groove, the coupling ring is formed by a plurality of coupling ring segments in a segmented manner by means of the separating cutouts, the coupling ring segments are arranged abutting against each other at the separating cutouts, and the separating cutouts of the at least one piston ring segment are formed parallel to each other or open in the concentric direction, the closure part is axially fixed in a one-sided form-fitting manner in the distal direction by the coupling ring, and wherein the locking body is arranged axially distally on the closure part and has a circumferential annular surface which forms a pressure contact with the coupling ring and fixes the coupling ring in the annular groove space in a form-fitting manner, the locking body axially fixes the closure part in a form-fitting manner on one side in the proximal direction by means of pressure contact with the coupling ring.

The utility model relates to the field of production of low-carbon magnesia carbon bricks, in particular to production equipment of low-carbon magnesia carbon bricks, which comprises a rack, a transverse plate arranged in the middle of the rack, a brick making mechanism arranged on the rack, an oil coating mechanism and a vibration flattening mechanism, the oil coating mechanism is positioned on the upper side of the transverse plate, and the vibration flattening mechanism is positioned on the lower side of the transverse plate. Oil injection lubrication is carried out on the compression molding position through one-time compression molding, the situation that the magnesia carbon bricks are inconvenient to demold is avoided, meanwhile, the whole raw material filling time is shortened, and the pressed raw materials are vibrated and flattened through the knocking arms along with continuous downward movement of the L-shaped push rod, so that the production efficiency is improved. Therefore, the situation that the die is stressed unevenly when the magnesia carbon brick is pressed is avoided.

The utility model discloses an automatic gypsum block pressing machine, and belongs to the technical field of gypsum block equipment. The structure comprises a rack, an isolation plate is arranged above the rack, a building block pressing device is arranged in the isolation plate, a mounting bottom plate is arranged above the building block pressing device, a gypsum fixing and clamping device is arranged on the mounting bottom plate, and a pressing mold is arranged in the center of the gypsum fixing and clamping device. According to the device, in the process of pressing gypsum blocks, the gypsum blocks can be fixed through a gypsum fixing and clamping device and a pressing mold, so that the stability in the gypsum pressing process is improved, and the situation that the pressing quality of the gypsum blocks is affected due to machine shaking is avoided; and in addition, a push rod arranged at the bottom of the device and a special building block pressing block can improve the bottom fixing capacity in the gypsum building block pressing process, and the conditions that the pressing pressure is too large, and the internal stress of the gypsum building block is not uniform are avoided.

This utility model relates to the field of battery separator testing technology, specifically disclosing an automatic testing device for the puncture strength of battery separators. The device includes a support frame, a testing component, and a clamping component. The testing component is mounted on the support frame and includes a puncture component. The clamping component is located directly below the puncture component and includes a lower clamp and an upper clamp arranged opposite each other. The lower clamp is fixed to the support frame by a connector, and the upper clamp is mounted on the support frame by a drive device. The drive device drives the upper clamp to move up and down, thereby pressing or separating it from the lower clamp. A first puncture hole is provided on the lower clamp, and a second puncture hole is provided on the upper clamp. The device also includes a transmission component for transporting the battery separator. The transmission component includes a transmission part located outside the clamping component, and the transmission part includes a fixing part fixedly connected to the support frame. A roller is rotatably mounted on the fixing part. This utility model achieves automatic testing of the puncture strength of battery separators, improving testing efficiency and accuracy.

The utility model discloses a low -noisy dry -type transformer relates to dry -type transformer technical field, including balance mechanism, the balance mechanism includes right side fixed block, connecting rod, rear side fixed block, left side fixed block, front side fixed block, adjusting assembly, right side fixed block, rear side fixed block, left side fixed block, front side fixed block end portion relative sliding abutment enclose into rectangle, in the utility model, through the transformer self weight down pressure, connecting rod drives adjusting assembly to move down, the tooth post and the bottom plate synchronous move down, when one side bottom plate first contact installation surface, through the rotation of gear drive opposite side tooth post continue to move down, until all bottom plate all with installation surface contact, make transformer reach the balance state, have guaranteed transformer overall barycenter stable, avoided internal iron core, winding etc. core components because of uneven stress that does not bear because of installation uneven, has guaranteed that transformer long -term stable operation.

This utility model discloses a rattan woven chair with strong bending resistance, relating to the field of rattan woven products. It includes a chair frame body, a rattan seat cushion fixedly connected to the frame body, armrests fixedly connected to both sides of the seat cushion, an adjustable support device slidably connected between the rear ends of the armrests, a rotating frame at the rear end of the seat cushion, and a rattan backrest rotatably connected to the frame. The backrest is located between the armrests and the adjustable support device. A sliding slider is provided on the side of the backrest, and a vertically downward support rod is hinged to the slider. The support rod is slidably connected to the adjustable support device. When in use, the backrest tilts under pressure. Under the action of the slider and the adjustable support device, the support rod moves downward synchronously, eventually contacting the ground to provide support. This improves the stress distribution on the rattan woven chair, effectively avoiding uneven stress distribution and enhancing its bending resistance.

The utility model relates to the technical field of diesel engine cylinder gaskets, and provides a diesel engine cylinder gasket machining clamp which is applied to a gasket body, the gasket body is detachably connected to a supporting plate, the diesel engine cylinder gasket machining clamp further comprises a supporting mechanism, a lifting rod and a driving mechanism, the supporting mechanism is arranged at the bottom of the supporting plate, and the lifting rod is arranged on the supporting mechanism; the lifting rod is used for lifting the cushion body, the driving mechanism is arranged on one side of the supporting mechanism and used for driving the lifting rod to ascend and descend, lifting openings are formed in the supporting plate and the base, the diameter of the lifting rod is the same as that of the lifting openings, and the driving mechanism drives the lifting rod to penetrate through the lifting openings to support the cushion body. By means of the technical scheme, the technical problem that in the prior art, after the cylinder gasket is machined, fastening bolts need to be detached, then the cylinder gasket is placed into a new one, and the overall production efficiency can be affected is solved.

When the circular water circulation heat pump water heater wall hanging support is installed, the installation hanging plate is firstly fixed on a wall surface, then the insertion holes in the main body frame are inserted into the insertion plates on the installation hanging plate, and therefore the main body frame is stably fixed. A VE-type rubber hanging plate supporting leg is arranged at the position of an opening, where a welding nut is arranged, of one side, close to the wall body, of the back plate assembly, and damage of the support to the wall body in the using process is effectively prevented. And then, the main body frame provides mounting support for the circular water circulation heat pump water heater through the VD type rubber shock absorber, the VD type rubber shock absorber can effectively absorb mechanical vibration generated during operation of the water heater and reduce vibration transmitted to a wall or other structures, and therefore noise is reduced, and it is ensured that the water heater keeps low noise and operates stably during operation. Meanwhile, the decorative coaming and the back plate assembly jointly form a complete circular supporting structure, the water heater body is comprehensively surrounded, it is ensured that the weight of the water heater is evenly distributed, and the situation of uneven stress is avoided.

This utility model discloses a graphite tube fixing device with shock resistance and anti-slip properties, including a base and an anti-slip fixing mechanism. The base has two fixing plates at its upper end, which are symmetrically distributed vertically and are hinged together by a hinge on the left side. The anti-slip fixing mechanism includes a bidirectional lead screw, a limiting block, a wedge groove, a wedge block, and an anti-slip component. The bidirectional lead screw is rotatably connected to the right side of the lower fixing plate, and the limiting blocks are slidably connected to the front and rear ends of the right side of the lower fixing plate. The inner center of each limiting block is threaded to the outer surface of the bidirectional lead screw. This graphite tube fixing device with shock resistance and anti-slip properties has an anti-slip fixing mechanism. The wedge groove compresses the wedge block to fix the two fixing plates, which can simultaneously limit the front and rear sides of the fixing plates. Combined with the compression of two anti-slip pads, the adsorption of anti-slip rubber rings, and the energy absorption of two energy-absorbing rubber pads, it can prevent the graphite tube from deflecting or shifting.

The invention discloses a pipeline butt joint auxiliary lifting and sliding device for pipeline construction. The pipeline butt joint auxiliary lifting and sliding device comprises a support assembly, a height adjusting assembly, an angle adjusting assembly and a butt joint assembly. The support assembly comprises a bottom plate, a support and a plurality of rolling pieces. The height adjusting assembly is connected with the support in a sliding mode and drives the first threaded sleeve and the lifting frame to achieve 0-1200 mm height adjustment. The angle adjusting assembly is connected with the height adjusting assembly and synchronously slides along with the height adjusting assembly, and the rotating shell is connected with the fixed disc and rotates by + / -180 degrees relative to the fixed disc. The butt-joint assembly comprises a first butt-joint shell and a second butt-joint shell, the second motor drives the second threaded sleeve and the first butt-joint shell to be close to the second butt-joint shell so that the two pipelines can be in butt joint, and the butt-joint precision is + / -2 mm. Moving is achieved through the support assembly, the height adjusting assembly and the angle adjusting assembly work cooperatively, the butt joint assembly achieves + / -2 mm precision butt joint through a double-guide-rod structure, the problem that existing equipment cannot achieve lifting and rotating at the same time is solved, and the construction flexibility is improved.

The utility model discloses a connecting and reinforcing device for a joint position of a building line pipe. The connecting and reinforcing device comprises a chuck; a support handle; a connecting sheet; a movable handle; fixing the ejector pin; a sliding ejector pin; a bottom thimble; the limiting mechanism comprises a limiting rod, a blocking piece, a fork rod and a nut, the limiting rod vertically penetrates through the supporting handle, a limiting groove is formed in the supporting handle in the length direction, the blocking piece is arranged on the outer wall of the limiting rod and used for abutting against the lower end face of the supporting handle, the fork rod is arranged at the lower end of the limiting rod and used for abutting against the movable handle, and the nut is in threaded connection with the limiting rod. And the upper end face of the supporting handle is pressed. The utility model has the following advantages and effects: the limiting mechanism capable of blocking the movable handle is arranged on the support handle to limit the turning angle of the movable handle, so that the extension amount of the sliding ejector pin is controlled, the phenomenon of uneven stress is avoided, the position of a wire pipe joint is prevented from being crushed, and the forming quality is ensured.