40 results about "Two step" patented technology

A wireless device selects, in response to initiating a random access procedure, a first radio resource for transmitting a message. In response to determining the first radio resource is invalid for transmission of the message, the wireless device transmits, via a second radio resource, the message based on determining the second radio resource is valid for the transmission of the message and determining a time difference between the second radio resource and the first radio resource is smaller than a threshold.

The invention belongs to the technical field of cleaning equipment, and provides a control method and device, cleaning equipment, a storage medium and a program product.The control method comprises the steps that in response to step obstacles detected by the cleaning equipment, depth information of a first step obstacle in the step obstacles is obtained; and based on the depth information, a rotating arm assembly of the cleaning equipment is controlled to execute corresponding obstacle crossing actions. Wherein the stair obstacles are provided with at least two stairs; the obstacle crossing action comprises the steps that the free end of the rotating arm assembly provides obstacle crossing assistance on the rear portion of a driving wheel of the cleaning equipment and / or the free end of the rotating arm assembly provides obstacle crossing assistance on the front portion of the driving wheel, and the first step obstacle is an obstacle which is close to the cleaning equipment and needs to cross the area first; the rotating arm assembly comprises a free end and a fixed end and can rotate or swing around the rotating center of the fixed end. And furthermore, the obstacle crossing stability and success rate of the cleaning equipment aiming at stair obstacles are improved.

The utility model discloses a conveying device and tissue selling equipment. The conveying device comprises a supporting mechanism and a pushing mechanism. The supporting mechanism comprises at least two step faces distributed in a high-low mode, and a connecting inclined face is arranged between the step faces. The step surfaces are used for placing a row of multiple products which are stacked up and down, and the products between the adjacent step surfaces are staggered up and down; and the pushing mechanism is used for pushing the lowermost product on the low step surface to move towards the high step surface along the connecting inclined surface. Therefore, when the pushing mechanism drives the lowermost product to move from the low position to the high position, the bottom product of the low step face can abut against the middle of the side face of the bottom product of the high step face, namely, the top face of the bottom product of the low position can be always lower than the top face of the bottom product of the high position. And one product at the bottom of the lower position can only push one product at the bottom of the higher position to move every time, and two products stacked up and down cannot be driven to move together. It is guaranteed that in the whole paper outlet process, the pushing mechanism can only eject out one paper towel bag, and paper can be smoothly output.

The present invention relates to a method for manufacturing a power semiconductor device by using a two-step thinning process, and to a method for manufacturing a power semiconductor device by using a two-step thinning process in which a support substrate having a high heat dissipation capacity is formed on a sapphire growth substrate thinned in two steps, thereby enabling the performance and reliability of the power semiconductor device to be improved.

A personalized preview system to receive a request to access a collection of media items from a user of a user device. Responsive to receiving the request to access the collection of media items, the personalized preview system accesses user profile data associated with the user, wherein the user profile data includes an image. For example, the image may comprise a depiction of a face, wherein the face comprises a set of facial landmarks. Based on the image, the personalized preview system generates one or more media previews based on corresponding media templates and the image, and displays the one or more media previews within a presentation of the collection of media items at a client device of the user.

Aspects of the disclosure include a pull and push two steps load floor system. An exemplary pull and push two steps load floor system can include a first two-track transition support feature including a first track having an open end and a second track having an open end and a second two-track transition support feature including a third track having an open end and a fourth track having an open end. The load floor system can further include a load floor having a hinge and four pins positioned such that the load floor can be coupled to the first two-track transition support feature and to the second two-track transition support feature by placing the four pins into respective tracks of the first two-track transition support feature and the second two-track transition support feature through the respective open ends.

The application provides a forming and machining method of a near-closed thin-wall snap ring, which comprises the following steps: firstly, designing the size of a process retaining section according to the size of a part; secondly, machining the process retaining section according to the size of the part; thirdly, cutting a material plate according to the size of the part body; fourthly, rounding the material plate according to the product diameter; fifthly, welding the process weld to obtain a cylinder for preparing the flanging forming; sixthly, in order to form a near-closed groove, the process needs to be realized in steps, that is, firstly, adopting a pre-formed U-shaped groove, and then adopting a flanging forming process; seventhly, supporting the process section in the process of flanging forming, and adopting a rolling forming method to form the product; eighthly, removing the excess material to ensure the width of the notch, and keeping the process section, which avoids the vibration of the cutter in the process of machining the thin-wall part, and better controls the deformation in the process of machining, so that good forming and machining sizes can be obtained; and ninthly, removing the process section, and forming the product in two steps, which realizes the economic and efficient machining of the near-closed thin-wall snap ring.

The utility model relates to the technical field of flow drill screws, in particular to a flow drill screw structure capable of effectively preventing looseness, which comprises a screw body, one end of the screw body is fixedly connected with a screw cap, the lower end face of the screw cap is provided with a screw cap flange integrated with the screw cap, and the inner side of the periphery of the lower end face of the screw cap flange is provided with a first step surface. A second step surface is arranged on the outer side of the periphery of the lower end surface of the nail cap flange, and the radius of the lower end surface of the nail cap flange is 2.7 mm, so that under the condition that the sizes of the nail caps are consistent, the contact area is increased, the friction force is effectively improved, the widths of the first step surface and the second step surface are 0.07 MM and 0.1 MM respectively, the angle is about 8 degrees formed by outward opening of the nail feet, and the service life of the nail caps is prolonged. The structure is beneficial to adapting to the working condition that the material is soft or hard, when the plate slightly deforms, such as warping or bending, the two steps form the annular protrusion and the annular recess, friction force can be effectively increased, and therefore the purpose of reducing torque attenuation is achieved.

A carrier board for stair renovation is provided with at least one groove on its inner surface to form the respective step. The groove is rounded at its apex, or has a semicircular or lens-shaped profile, and is cut only to a depth that leaves 2 mm of the carrier material to stabilize the resulting edges. Two parallel grooves are milled into the carrier board, one on the right and one on the left. After the material is bent at a 90° angle in the area of ​​these grooves, a renovation double step is created. By creating rounded V-shaped grooves, directly heating these groove areas while simultaneously cooling the surrounding areas, and then bending the groove areas with the remaining carrier material and the decorative layer, a stable double step is created. This minimizes waste and yields two steps that can be installed on-site onto existing stair treads.If more than two grooves of this surface structure are arranged parallel in the bending area of ​​the stair tread, each of these grooves supports only a partial bending of the base plate up to the 180° angle being reached. The stresses that arise in the material due to the bending are thus minimized, largely preventing cracking or breakage of the stair tread.

The utility model relates to the technical field of ball mills, in particular to a stepped wet-type ball mill lining which comprises a first-order lining plate arranged on the inner wall of a ball mill and located at one end, close to a feeding port, of the ball mill, and a second-order lining plate arranged on the inner wall of the ball mill and located at one end, away from the feeding port, of the first-order lining plate. The third-order lining plate is arranged on the inner wall of the ball mill and located at the end, away from the feeding port, of the second-order lining plate, the section thickness of the second-order lining plate is different from that of the first-order lining plate, and the section thickness of the third-order lining plate is different from that of the first-order lining plate and that of the second-order lining plate. The whole service life of the lining plate is effectively prolonged, and meanwhile partial replacement under the condition that partial lining plates need to be replaced is achieved.

Methods and apparatuses are provided for the dynamic adaptation and sharing of random access channel (RACH) occasions in wireless communication networks for network energy savings (NES). A user equipment (UE) receives a configuration indicating whether a RACH occasion is shared between two-step and four-step random access. The UE receives information activating an additional RACH occasion, with an indication of whether it is shared. The UE transmits a two-step RACH preamble or a four-step RACH preamble in the additional RACH occasion based at least in part on the configuration or the information. The methods also include defining dedicated parameters for NES-capable UEs, dynamically indicating sharing properties of additional ROs, and allowing baseline ROs to adapt their sharing properties. Thus, the disclosed methods and apparatuses optimize resource utilization, reduce latency, and improve energy efficiency in wireless networks, ensuring efficient initial access and resource allocation while maintaining backward compatibility with non-NES capable UEs.

The embodiment of the utility model provides a cross ladder, and relates to the technical field of ladders of production lines. The striding ladder comprises two step ladder assemblies and a lap joint plate. One end of the lap joint plate is movably connected with one step ladder assembly, and the other end of the lap joint plate is movably connected with the other step ladder assembly; the lap joint plate can move in the Z-axis direction relative to the step ladder assembly. During use, the two step ladder assemblies are arranged on the two sides of the speed multiplication line respectively. And by arranging the lap joint plate, production communication of personnel on the two sides of the speed multiplication line can be facilitated, and the personnel can quickly cross the speed multiplication line and repair and maintain the equipment conveniently. The lap joint plate can move in the Z-axis direction relative to the step ladder assembly, the height of the lap joint plate can be conveniently adjusted according to the height of the speed multiplication line so as to be suitable for speed multiplication lines of various heights, and universality is improved.

Provided is a wafer jig including a bottom wall and a ring-shaped side wall. The bottom wall has a supporting surface. The ring-shaped side wall is connected to a periphery of the bottom wall. The ring-shaped side wall includes at least two step portions. The two step portions include a first step portion and a second step portion. The first step portion is connected between the supporting surface and the second step portion, and the first step portion protrudes along a direction toward a center of the bottom wall. The ring-shaped side wall surrounds the center. In addition, a wafer structure and a wafer processing method are also provided.

The application belongs to the technical field of copper pin processing, and discloses a high-precision copper pin and a processing equipment thereof. The copper pin is provided with two step surfaces at the tail section, and the two step surfaces are of the same height along the radial direction. The processing equipment for processing the copper pin comprises an injection mold capable of linearly sliding on a workbench to enter and exit an injection station; a blanking device arranged on the workbench for transferring the copper pin; and a transfer device slidingly arranged on the workbench for transferring the copper pin on the blanking device into an encapsulation cavity of the injection mold. The application is provided with two step surfaces at the tail section of the copper pin, and the pressure resistance and tensile resistance in the forward and backward axial directions are obviously improved. The encapsulation area is also enlarged through the two connected step surfaces, and the fastening degree is obviously improved. Since the bending and other processing methods are not used, the microcrystalline lattice of the copper pin does not change, and therefore the influence on impedance is relatively small, and the precision is high.

The integrated packaging structure comprises the magnetic device and a lead frame, supporting plates are arranged on the lead frame, supporting plate connecting pins are used for assembling the magnetic device and an electronic element and achieving electrical connection, the number of the supporting plates is two, the supporting plates are of a split distribution structure and are arranged on the two sides respectively, the supporting plate on one side is in a two-step shape, and the supporting plate on the other side is in a two-step shape. Comprising a narrow step surface and a wide step surface, and a chamfer is arranged on the wide step surface at the joint position of the two steps, so that isolation grooves with gradually increased intervals are formed below the magnetic device; and four corners of the magnetic device are respectively positioned at two ends of the narrow step surface of the supporting plate and two ends of the chamfered part of the wide step surface, so as to form four-point positioning. Compared with the prior art, the filling volume of the molding compound can be increased, the isolation voltage resistance of the product is improved, and the insulation isolation voltage resistance of the transformer and the carrier plate is improved.

The utility model discloses a through hole axial component surface-mounted installation forming tool which comprises a base, a fixing block is arranged at the top of one end of the base, a through groove is formed in the top of the base in a penetrating mode, steps are arranged on the two sides of the top end of the base respectively, and the two steps are symmetrically distributed on the two sides of the through groove. The positioning assembly is arranged in the through groove and is used for positioning the component; the U-shaped positioning seat is rotationally connected with the fixing block and is used for fixing a lead in a component on the positioning assembly, and the width of the U-shaped positioning seat is equal to that of the top of the base; the U-shaped pressing block is located on the outer side of the U-shaped positioning seat, and the U-shaped pressing block is rotationally connected with the fixing block and used for bending and forming the lead on the component. According to the utility model, through the cooperation of the components, the sizes of the lead shoulders are completely symmetrical after the component is formed, and the leads at the two ends of the component can be bent and formed at the same time, so that the production efficiency is greatly improved.

The application discloses a kind of back channel step two times pre-excavation support and support back method, comprising the following steps: (A) determining the range of stress reduction zone in advance mining;(B) support in advance mining influence zone;(C) excavate the back channel of first half, excavate transfer chamber and corner;Excavation is carried out simultaneously with the support of first half back space and the equipment of first half back;(D) excavate the back channel of second half, excavate transfer chamber and corner;Excavation is carried out simultaneously with the support of second half back space and the equipment of second half back.The present application is in advance according to support stress curve in stress reduction zone before stopping mining line, and the back channel is excavated in two steps on site, and the back channel is excavated and the support is shielded to realize the synergistic effect.

The present invention provides a one-step adhesive bonding and curing molding method and shell assembly for a mosaic structure. While ensuring adhesive bonding and curing quality and post-bonding part dimensions, this method achieves one-step adhesive bonding and curing molding of a honeycomb mosaic structure composite material. This reduces the number of assembly and adhesive bonding and curing steps required, allowing the production of a honeycomb sandwich mosaic structure to be completed with only one assembly and one adhesive bonding. This method is simple to operate and the process is easily controllable. This method solves the problems of prior art methods requiring at least two steps of assembly, adhesive bonding, and curing molding for a hyperbolic honeycomb mosaic structure composite material, resulting in difficulty in controlling deformation.

The application discloses a chip packaging pin, which comprises a pin body, the pin body comprising a base material, a solder pad arranged on the base material, and an electroplated coating arranged on the surface of the solder pad; the pin body has two opposite end faces, and the two end faces are both provided with a first step structure; and the contact surface between the solder pad and the electroplated coating is provided with a second step structure. The chip packaging pin has the advantages that the first step structure is arranged on the two end faces of the pin body, the second step structure is arranged on the contact surface between the solder pad and the electroplated coating, the two step structures work in cooperation, the mechanical strength of the pin against deformation and peeling is improved while the integrity of high-speed signals is greatly improved, the contradiction between the extreme electrical performance and the physical reliability, which is difficult to be considered in the prior art, is preferentially solved, and the strict transmission requirement of super-high-speed signals such as PCIe Gen7 is met.

The application provides a transverse folding integrated slow-moving ladder, which comprises three parallel vertical plates, i.e. left, middle and right vertical plates, and step plates installed between two vertical plates, wherein the step plates are divided into left and right parts, the middle part is connected by a hinge and can be folded, and the two ends are hinged on the adjacent two vertical plates to form steps which are gradually raised; the step plate on one side of the middle vertical plate leads to the ground, the step plate on the other side leads to the opening of the shelter, and the two step plates are communicated at the opening of the middle vertical plate. The application can save space and meet the requirements of safety and comfort.

The utility model relates to the technical field of folding ladders, and provides a foldable step which comprises at least one group of step units, each step unit comprises at least two step plates, and the step plates are gradually stacked in a step shape; a supporting pipe is arranged below the step plate and is connected with the step plate; the rear fixing support is arranged at the rear ends of the multiple step plates, the tail ends of the supporting pipes are hinged to the rear fixing support, supporting connecting rods are hinged to the front ends of the supporting pipes, and the other ends of the supporting connecting rods are hinged to the adjacent supporting pipes; one end of the supporting pipe is lifted up to drive the step plate to rotate around the rear fixing support to be folded and put away. The folding device can be overturned and folded upwards quickly, is simple and quick to operate, and occupies a small space volume.

Tool (100) for injection molding a Fresnel stepped lens, wherein a mold surface (10) of the tool (100) has annular and / or annular segment-shaped steps (11) in a concentric arrangement, wherein the tool (100) comprises at least one die (2) with a casting surface (12) and an ejector element (3) received in a bore of the die (2) with a casting surface (13), wherein the mold surface (10) is formed by the casting surfaces (12, 13) of the die (2) and the ejector element (3), characterized in that the casting surface (13) of the ejector element (3) has a circular outline and forms a centrally arranged segment of the mold surface (10), wherein a circumferential gap (S) between the ejector element (3) and the die (2) separates two steps (11) of the mold surface (10) from each other.

The spliced ladder for the bathtub comprises at least two step structures which are arranged in a stepped mode, the adjacent step structures are connected in a spliced mode, each step structure is provided with an N-stage supporting frame and an N-stage platform, the N-stage platform is detachably installed at the upper end of the N-stage supporting frame, and the N-stage platform is detachably installed at the lower end of the N-stage supporting frame. A clamping piece is arranged at the upper end of the N-stage supporting frame, the N-stage platform is limited and fixed through the clamping piece, and anti-skid protrusions are arranged on the upper plane of the N-stage platform. By designing the step structure connected in a spliced mode, the bathtub platform is convenient to assemble and suitable for bathtubs of different heights, the platform is detachably installed on the supporting frame, and assembling is efficient.

The application provides a stepped labyrinth sealing structure with a shunt passage. The shunt passage is arranged between the two steps of the sealing bush, so that part of the airflow is backflowed into the shunt passage before the tooth top of the second step, thereby inhibiting the leakage of the airflow. The inlet of the shunt passage is arranged between the first step and the second step of the bush, and the outlet is arranged on the second step. After the airflow flows through the first step of the labyrinth, the airflow is divided into two parts, one part of the airflow flows to the second step along the original labyrinth passage, and the other part flows into the shunt passage. The airflow in the shunt passage is subjected to the frictional resistance of the wall surface, so that the pressure is reduced. The pressure at the outlet of the shunt passage is lower than the pressure in the tooth cavity between the first step and the second step of the labyrinth, so that the airflow is backflowed into the shunt passage before the gap between the tooth tops of the second step of the labyrinth, and the leakage flow of the airflow is reduced. The method can improve the sealing performance of the labyrinth without affecting other system functions, without changing the structural parameters such as the size and position of the labyrinth sealing, and the method is simple and feasible.

The utility model discloses a 90-degree flanging machine pressing die and a flanging machine, and belongs to the technical field of flanging machine pressing dies. The 90-degree flanging machine pressing die comprises a pressing die body, the pressing die body is provided with a punch end and an installation end, the punch end is provided with a first contact part, a second contact part and a third contact part which make contact with the inner wall of a metal pipe in sequence in the axial direction of the pressing die body, the second contact part is arranged in a cylindrical shape, and the third contact part is arranged in a cylindrical shape. The diameter of the first contact part is gradually reduced from one end of the second contact part, and the third contact part is a plane perpendicular to the second contact part. Compared with the prior art, the two ends, bent into 45 degrees in advance, of the metal pipe are subjected to 90-degree edge pulling operation in two steps, the problems that the metal pipe is directly bent into 90 degrees in one step, pipe cracks are easily caused, and the precision and the qualified rate required by edge pulling cannot be achieved are solved, the occurrence probability of the pipe cracks is reduced, the edge pulling precision is improved, and therefore the product quality is improved; the structure is simple, and manufacturing and maintenance are easy.

The utility model discloses a 45-degree pressing die and a flanging machine, and belongs to the technical field of flanging machine pressing dies. The pressing die comprises a pressing die body, the pressing die body is provided with a punch end and an installation end, the punch end is provided with a first contact part, a second contact part and a third contact part which make contact with the inner wall of a metal pipe in sequence in the axial direction of the pressing die body, and the diameter of the first contact part is gradually reduced from one end of the second contact part to the other end of the second contact part. The diameter of the second contact part is the same as that of the first contact part, and the diameter of the third contact part is gradually increased from one end of the second contact part to the mounting end. When the flanging device is used, a metal pipe expands and extends to the inclination angle of the first contact part through the first contact part, then passes through the second contact part and is subjected to secondary extrusion through the third contact part, and compared with the prior art, flanging operation at different angles is achieved through two steps of actions, the flanging precision is improved, and the production efficiency is improved. And the occurrence probability of pipe cracks is greatly reduced.

The present application relates to the technical field of round bending stamping device, and discloses a round bending stamping device, which solves the problems of increased processing procedures and poor forming appearance of the cylindrical material caused by the springback of internal stress in the existing round bending stamping device. Through the collaborative work of the operation table, the die mechanism, the die core mechanism and the feeding mechanism, efficient round bending forming of the plate is realized. The device drives the upper die and the lower die to cooperate by using the hydraulic cylinder, and the plate is stamped into round bending one and round bending two in two steps to avoid springback. The core rod in the die core mechanism is fixed, and the core sleeve is movable, so that automatic sleeving, transfer and discharging of round bending one are realized. The support structure cooperates with the misaligned grooves to ensure the accurate misalignment and overlap of the two ends of the round bending. The feeding mechanism adopts the continuous feeding of the friction roller, and the two-step procedures are parallel, and the efficiency is equivalent to one-time forming.

This invention provides a method for reinforcing steel reinforcement binding in shear walls encountering beams; including: Step 1, drilling and installing reinforcing bars at the foundation location; Step 2, chiseling the bottom of the beam and then bending and anchoring the vertical reinforcing bars (1) of the shear wall at the bottom of the beam; Step 3, setting equivalent reinforcing bars (3) between the vertical reinforcing bars at the bottom of the concrete beam, and setting short bars (4) 300mm below the floor slab along the location where the equivalent reinforcing bars are set; Step 4, chiseling at both ends of the concrete, repeating these two steps; Step 5, erecting the shear wall formwork, and pouring concrete for this part after reinforcement; Step 6, erecting the formwork at the variable cross-section location, and pouring concrete again after reinforcement. The method involved in this invention can not only shorten the construction period but also save construction costs, and has important significance for structural modification research.

The application discloses a deep hole machining process and belongs to the technical field of deep hole machining. The deep hole machining process comprises the following steps: ensuring that all required drill bits in a hole machining group are perpendicular to the surface of a workpiece, and then enabling the drill bits to contact the workpiece through extension and contraction, so that the drill bits can be stably and safely embedded into the workpiece when rotating. The application solves the problem that the existing deep hole machining method can only segmentally drill holes through drill bits during machining, and cannot process deep holes with large diameters at low cost. The application realizes segmented drilling and reaming by two steps, i.e., first drilling a pilot hole, then drilling a first enlarged hole along the pilot hole, and finally reaming the hole by deeply inserting a cutting tool used for reaming into the first enlarged hole. The segmented drilling and reaming can avoid drill bit breakage and high temperature discharge failure caused by long-distance and large-diameter reaming.