11results about How to "Large structure size" patented technology

The invention provides a microwave program-controlled step attenuator. The microwave program-controlled step attenuator comprises a plurality of stages of step length switching units, the stepping length switching unit comprises a straight-through sheet which is fixedly arranged, at least two attenuation sheets which are arranged above the straight-through sheet at intervals, and a group of movable contact springs which are respectively positioned at two ends of the attenuation sheets; each movable contact spring is connected with a push rod which moves along the axis of the push rod and is used for driving the movable contact spring so that the inner end of the movable contact spring can make contact with the attenuation piece or the straight-through piece. The outer end of the movable contact spring is rotatably connected with one end of the fixed contact spring which is fixedly arranged through a rotating column, and the push rod is rotatably arranged around the rotating column corresponding to the movable contact spring connected with the push rod and used for driving the movable contact spring to rotate so that the inner end of the movable contact spring can be switched to correspond to different attenuation slices; and the other end of the fixed reed is rotationally connected with the outer end of the movable reed of the adjacent step length switching unit through a rotating column, or is vertically connected with the radio frequency connector. According to the scheme, multi-step length switching can be achieved, and good stability can be kept on the basis of achieving switching.

The tent assembly comprises a main tent frame and an auxiliary tent frame, the auxiliary tent frame is arranged on the main tent frame and has a supporting state and a non-supporting state, and in the supporting state, the auxiliary tent frame extends outwards from the main tent frame so as to enlarge the shielding range of the main tent frame; and in a non-supporting state, the auxiliary tent frame is folded to the main tent frame or the auxiliary tent frame is detached from the main tent frame. According to the tent assembly, when the auxiliary tent frame is in the supporting state, the auxiliary tent frame extends outwards from the main tent frame, so that the structural size of the tent assembly is increased, and meanwhile the shielding range of the tent assembly is enlarged. When the auxiliary tent frame is in the non-supporting state, the auxiliary tent frame is close to the main tent frame or detached from the main tent frame, at the moment, the structural size of the tent assembly is relatively small, and the shielding range is also relatively small. In this way, the state of the auxiliary tent frame can be selected according to the use scene of the carrier, so that the structural size of the tent assembly can be conveniently adjusted.

This application relates to the field of machining technology, and discloses an ultrasonic tool holder, ultrasonic machining equipment, and machine tool. The ultrasonic tool holder includes: a tool body and a connecting sleeve. The tool body has a second end and a first end arranged opposite to each other in a front-rear direction. The first end is adapted to be connected and fitted with a spindle, and the second end has a mounting cavity for accommodating a transducer. A wireless receiving unit is provided on the outer periphery of the tool body. The connecting sleeve is connected to the second end and arranged coaxially with the tool body. An outer shell is fitted onto the outer periphery of the connecting sleeve through a bearing, wherein the inner diameter of the bearing is less than or equal to the outer diameter of the second end. Therefore, by placing the bearing between the connecting sleeve and the outer shell, the bearing does not occupy the outer periphery space of the tool body, which reduces the axial dimension of the tool body, thereby improving the rigidity of the tool body and reducing the overall axial dimension of the ultrasonic tool holder. It also increases the structural dimensions of the transducer and reduces the radial dimension of the bearing, thereby improving ultrasonic machining performance.

The present invention discloses a 4-SPU three-degree-of-freedom parallel heavy-load swing platform containing a constraint mechanism. The moving platform is located above the foundation and is arranged horizontally; the constraint mechanism and the driving hydraulic cylinder are both located between the moving platform and the foundation, the top of each constraint mechanism is hinged to the middle of each side of the moving platform through an upper ball joint, the bottom of the constraint mechanism is fixedly connected to the foundation, the top of each driving hydraulic cylinder is hinged to each corner point of the moving platform through a Hooke's hinge, and the bottom of the driving hydraulic cylinder is connected to the foundation through a lower ball joint; the constraint mechanism is used to limit the lateral swing, longitudinal swing and bow swing movement of the moving platform; the four constraint mechanisms include a PRRS branch chain type constraint mechanism and three PRS branch chain type constraint mechanisms. The present invention is installed in parallel with four groups of vertically installed driving hydraulic cylinders and four groups of constraint mechanisms, and has the characteristics of large bearing capacity, easy control, strong anti-torsion and anti-overturning capabilities, and high out-of-control safety.

The invention relates to a micromechanical component for a stress sensor, having a first substrate (10) with a first substrate surface (10a), a second substrate (12) with a second substrate surface (12a) and an evaluation electronics (20) configured at and / or in the second substrate (12), wherein the first substrate (10) is fixed at the second substrate (12) by means of at least one electrical connection (22) formed by means of a metal bonding method, which is configured in an intermediate volume (14) between the first substrate surface (10a) and the second substrate surface (12a), wherein at least one electrode (16, 16a, 16b, 62) and at least one counter electrode (18a, 18b, 18c) are arranged in the intermediate volume (14), wherein the at least one electrode (16, 16a, 16b, 62) and / or the at least one counter electrode (18a, 18b, 18c) are electrically connected at the evaluation electronics (20) by means of the at least one electrical connection (22) formed by means of a metal bonding method.

The invention relates to an automatic separation device and a separation method for permanent magnetic blocks, which solve the technical problems in the existing production and manufacturing process of electric permanent magnetic chucks, such as low separation efficiency, great separation difficulty, easy breakage of permanent magnetic blocks, large labor workload, and easy injury to operators when the permanent magnetic blocks are separated manually. The device comprises a bottom plate, a feeding mechanism, a material storage and a separation mechanism, wherein the feeding mechanism is connected to the bottom plate, and the material storage is connected to the feeding mechanism; the device can be widely used in the technical field of production and manufacturing of electric permanent magnetic chucks.

The present invention discloses a mobile folding hangar that can be horizontally unfolded and folded, comprising at least two oppositely arranged mobile side walls and a folding roof installed on the top of the mobile side walls, the two sides of the folding roof are hinged to the mobile side walls, a plurality of slides are vertically arranged on the mobile side walls, the lower end of a movable strut is slidably connected in each of the slides, the upper end of the movable strut is hinged to the transverse connecting rod of the folding roof, and the lower end of the movable strut is simultaneously connected to one end of a lifting cable, the other end of the lifting cable is fixedly connected to a lifting cable winch after passing through a lifting cable fixed pulley fixed at the upper end of the slide, when the folding roof is basically unfolded, the lifting cable winch is rotated to move the movable strut upward along the slide, and the folding roof is fully unfolded. The present invention has a fast construction speed, can be walked and moved as a whole, and can be quickly repaired after being damaged.

The invention relates to a method for forming a semiconductor structure. The forming method of the semiconductor structure comprises the following steps that a substrate is provided, the substrate comprises an array area and a peripheral area, and the array area comprises a plurality of active columns which are arranged at intervals; forming a dielectric layer covering the array region and the peripheral region, an isolation layer covering the side wall and the top surface of the dielectric layer in the peripheral region, and a covering layer covering the isolation layer, wherein the width of the dielectric layer in the first direction is 40-100 nm; removing a part of the dielectric layer in the array region, and removing the covering layer in the peripheral region to expose the active columns; forming a conductive material layer covering the array region and the peripheral region; and removing part of the conductive material layer in the array region and all the conductive material layer in the peripheral region to form a conductive layer electrically connected with the active column. The manufacturing cost of the semiconductor structure is reduced, and the performance of the semiconductor structure is improved.

The present invention discloses a mobile folding hangar that can be expanded or folded laterally, comprising at least two oppositely arranged mobile side walls (2) and a folding roof (1) installed on the top of the mobile side walls, the two sides of the folding roof being hinged to the mobile side walls, a plurality of fixed masts (4) being vertically installed on the mobile side walls, a pulley being installed on the top of the fixed masts, one end of a suspension cable being connected to the folding roof near the mobile side wall, the other end of the suspension cable being wound around the pulley on the top of the fixed mast and then being wound on the electric winch drum on the mobile side wall. The present invention has low construction cost, fast construction speed, can realize rapid deployment and repeated use; can be integrated with multiple hangars, any number of combinations, flexible layout, good site adaptability; can be moved and replaced as a whole, can be quickly repaired after damage, and can be quickly put into use.

The present invention discloses a front-mounted garbage feeding and flipping mechanism and a combined sanitation equipment having the same, comprising: a swivel support seat, the swivel support seat is connected to a flip arm, the connecting end of the flip arm is hinged to the swivel support seat, the mounting end bypasses the cab and extends to the front of the cab and bends toward the connecting end. The mounting end is hinged to a fork bracket, and the first hinge point between the mounting end and the fork bracket is located on the side close to the connecting end, and the fork bracket is used to be forked on the garbage bin to be loaded. It also includes a swivel drive rotating member hinged to the swivel support seat and the flip arm respectively, a material discharge driving rotating member hinged to the fork bracket and the flip arm respectively, and a control device connected to the swivel drive rotating member and the material discharge driving rotating member and arranged in the cab, the swivel drive rotating member is used to drive the flip arm to rotate around the second hinge point hinged to the swivel support seat. The material discharge driving rotating member is used to make the fork bracket that moves with the swivel drive rotating member to the top of the feed port rotate around the first hinge point.

The utility model provides a music score display board, which belongs to the technical field of display teaching, aims to solve the problems that the drawing time is longer, the labor capacity of workers is larger, the waiting time of viewers is longer and the learning efficiency is influenced when the existing display board is used, and comprises a display bracket, the display board is fixedly connected to the upper part of the display bracket; the vertical drawing sliding seat is vertically slidably connected to the front end face of the display board. The small pitch line drawing plate is connected to the interior of the vertical drawing sliding seat in a sliding mode, and small pitch line drawing pens are evenly arranged on the rear side face of the small pitch line drawing plate; the nodal line drawing transmission assembly is arranged in the vertical drawing sliding seat and drives the nodal line drawing plate to slide intermittently. The removing and drawing transmission assembly is arranged in the left-right sliding seat, and the operation handle achieves sliding of the removing plate / the score line drawing plate through the removing and drawing transmission assembly. According to the utility model, nodal lines and spectral lines can be drawn quickly, and the display efficiency and the display effect are improved.