11results about How to "Stable positional relationship" patented technology

The utility model discloses a cable, which belongs to the field of cables and comprises a core wire, a middle coating layer, a first shielding layer, a second shielding layer and a ground wire, the middle coating layer is coated outside the core wire, the first shielding layer is coated outside the middle coating layer, the second shielding layer is coated outside the first shielding layer, and the ground wire is positioned between the middle coating layer and the first shielding layer. According to the cable provided by the utility model, through the combined action of multiple layers of structures, the middle coating layer, the first shielding layer and the second shielding layer can be dispersed to each layer when bearing external bending stress, so that the stress concentration of the core wire is reduced, the probability of deformation of the core wire due to repeated bending is reduced, the characteristic impedance stability is maintained, the signal transmission is ensured, and the data transmission abnormity is reduced.

This invention belongs to the field of nuclear power plant equipment maintenance technology, specifically relating to an underwater electrical discharge machining (EDM) repair device based on rigid-flexible coupling positioning under irradiation conditions. It includes an underwater transport device, an EDM device, a camera monitoring device, and a control system. The underwater transport device provides transport and positioning support for the EDM device, which performs underwater cutting of instrument bushings. The control system is located above water and performs underwater cutting of instrument bushings via remote operation. The repair process is monitored and recorded in real time by the camera monitoring device. This invention is simple to operate, time-efficient, and does not cause secondary damage to the lower reactor internals, nor does it affect the reuse of the lower reactor internals.

The utility model discloses a medical operating room anti-radiation building structure which comprises a floor, a ceiling and a side wall which form an operating room building structure, the side wall comprises a civil engineering wall and an internal composite isolation layer, the internal composite isolation layer comprises an electrolytic steel plate layer, a calcium carbonate plate layer and a bearing frame, and the electrolytic steel plate layer is attached to the calcium carbonate plate layer. The bearing frame is used for bearing and supporting a composite structure composed of the electrolytic steel plate layer and the calcium carbonate plate layer, and the electrolytic steel plate layer, the calcium carbonate plate layer, the bearing frame and the civil engineering wall are arranged on the side wall from inside to outside. The peripheral boundary of the whole operating room space is contained in an anti-radiation system, and by arranging the combined form of the electrolytic steel plate layer, the calcium carbonate plate layer and the supporting frame, it is guaranteed that the operating room has good radiation shielding performance, and the integrity and durability of a composite structure can be achieved; and the relatively stable position relation of each layer in the use process is ensured.

The utility model relates to the technical field of stoma base plate cutting, and discloses a stoma base plate trimming device which comprises a central shaft rod, a main body sliding rod, a positioning cylinder, an action structure and a cutting mechanism, and the central shaft rod is used for being axially sleeved and matched with a middle round hole of a stoma base plate and axially attached and positioned; the main body sliding rod is located at the first end of the center shaft rod and arranged in the radial direction of the center shaft rod. The action structure is slidably and adjustably arranged on the main body sliding rod to form a first sliding mechanism, the cutting mechanism is arranged on the action structure, and the cutting mechanism is used for being arranged towards the stoma base plate so that cutting can be conveniently conducted on the stoma base plate; the positioning cylinder is arranged on the action structure, the positioning cylinder is parallel to the main body sliding rod, and the positioning cylinder is arranged towards the central shaft rod and is in sliding fit with the main body positioning hole in the central shaft rod to form a second sliding mechanism. The cutting size of the opening can be accurately controlled through the action structure, positioning is accurate, and the structure is simple.

The application discloses a kind of bubble generators, including bubble generator shell and bubble generator inner core, bubble generator shell has the spherical assembly ring for being set over at lower end and the water inlet of bubble generator inner core is set at top;Bubble generator inner core has core body, first panel and second panel, the spherical outer wall of core body is matched with spherical assembly ring and ring inner wall;The outer ring wall of first panel and ring inner wall are connected by multiple connecting sheets, the interval between adjacent two connecting sheets is air inlet passage;The outer ring wall of second panel is clamped in ring inner wall, and the interval between the second panel and first panel has spacing, interval and air inlet passage are communicated;The air inlet passage of the bubble generator of the application is set on bubble generator inner core, water and air are fully mixed in bubble generator inner core to produce bubble water, can be replaced by setting the bubble generator inner core of different size air inlet passage to adjust air intake, realize the bubble effect of different water spray, can satisfy the demand of different people to water potential, water spray variety style etc..

The utility model relates to the technical field of inclined hole location degree detection tools, and discloses an inclined hole location degree detection tool which comprises a bearing bottom plate, the front end and the rear end of the bearing bottom plate are fixedly connected with handles, the top of the bearing bottom plate is fixedly connected with a reference block, and the top of the bearing bottom plate is fixedly connected with an inclined guide plate. According to the utility model, the fixed sleeve is arranged to provide a foundation for installation and positioning of other parts, in the detection process, the relative position relation of related parts can be kept stable, and the limiting clamping frames are distributed in a bilateral symmetry manner by taking the fixed sleeve as the center, so that detection errors or part damage caused by excessive movement of the limiting clamping frames can be prevented; the second reset spring is located in the fixing sleeve, when a component related to the second reset spring moves in the detection process, the second reset spring can enable the component to restore to the initial position after detection is finished, the effect is similar to the effect of the first reset spring, and the convenience of product detection by the device is improved.

The utility model discloses an image sensor packaging structure with a stable transparent cover plate, which relates to the technical field of semiconductor packaging and comprises an image sensor, a substrate, a supporting side wall, a side wall extension plate and the transparent cover plate. The image sensor is connected to the substrate through a plurality of leads; the image sensor comprises a photosensitive area; the supporting side wall is arranged on the upper surface of the image sensor; the supporting side wall is annular; the photosensitive area is located in the annular supporting side wall; the lead is positioned outside the annular support side wall; a groove is formed in the lower side of the side wall extension plate; the upper ends of the supporting side walls can be inserted into the grooves to be fixed. The transparent cover plate is fixed on the upper surface of the side wall extension plate. According to the image sensor packaging structure with the stable transparent cover plate provided by the utility model, the problem that the sensing chip cannot work normally due to the fact that the transparent cover plate is easy to fall off due to external environment vibration in the prior art is solved; according to the utility model, the position relation of the transparent cover plate relative to the image sensor is more stable.

The utility model discloses an injection pen transmission and dosage adjusting device which comprises an adjusting rod, an adjusting disc cover is detachably arranged at the end, close to an injection end, of the adjusting rod, a plurality of drive plate positioning devices are arranged on the side, close to the injection end, of the adjusting disc cover, and the injection pen transmission and dosage adjusting device further comprises a feeding device coaxial with the adjusting rod. The feeding device is located on the side, close to the injection end, of the adjusting rod, and the end, close to the adjusting rod, of the feeding device is provided with a plurality of drive positioning devices matched with the drive plate positioning devices. The utility model aims to provide a transmission and dose adjustment device which is relatively simple in structure and can enable an injection pen to have the capability of accurately injecting medicaments.

This invention proposes a seed metering chamber that directly drives the seed disc rotation using an axial flux motor, belonging to the field of agricultural machinery technology. It solves the shortcomings of existing seed metering mechanisms, such as reliance on mechanical shaft transmission, long transmission chains, poor transmission stability during operation, and high noise levels. In this invention, housings A and B are interconnected to form a seed metering cavity, with the seed disc disposed inside the cavity. A top seed wheel is located inside housing A and on one side of the seed disc, adjacent to the seed disc to form a seed metering structure. An axial flux motor is disposed on one side of housing B, with its output end facing the seed metering cavity and connected to the seed disc. The output end of the axial flux motor has a protruding structure, and the seed disc has a corresponding groove structure. The protruding structure is embedded in the groove structure to drive the seed disc to rotate. This invention is applicable to precision seeding operations in agricultural seeding equipment for quantitative separation and stable seed discharge.