12results about How to "Stable distance" patented technology

The utility model provides a pneumatic pipe clamp valve convenient for flow regulation, which comprises a shell and an inner sleeve, two ends of the shell are respectively provided with a first flange and a second flange, the shell is composed of an upper shell and a lower shell which are symmetrical, the upper shell and the lower shell are connected through a bolt, the upper shell and the lower shell are respectively and fixedly provided with a cylinder pipe, and the inner sleeve is provided with an air inlet and an air outlet. An air inlet box is fixedly arranged on the top of the air cylinder pipe in a communicating mode, a moving rod is arranged in the air cylinder pipe in a sliding mode, a piston is arranged on the top of the moving rod, the bottom of the moving rod penetrates through the air cylinder pipe and is located on the inner side of the shell, an extrusion rod is arranged at the bottom of the moving rod, and the extrusion rod abuts against the upper surface of the inner sleeve. And two ends of the inner sleeve are respectively connected with the first flange and the second flange through bolts and are connected in the shell. The flow velocity control device has the advantages of being sensitive to operate, convenient to control the flow velocity and the like.

The invention provides disinfection equipment for a hemodialysis machine, and belongs to the technical field of disinfection of hemodialysis machines. Comprising a high-temperature disinfection box; and the connecting assembly is used for keeping the distance between the high-pressure spray head and the rotating column stable, and the connecting assembly is connected with the high-pressure spray head and the rotating column. By arranging the connecting assembly, the distance between the high-pressure spray head and the rotating column can be kept stable, so that the disinfection brush is matched with the high-pressure spray head to always provide stable and uniform flushing force for the inner wall of the guide pipe, the inner wall of the guide pipe can be comprehensively and fully flushed and disinfected, and the flushing and disinfection quality of the guide pipe is guaranteed; the whole cleaning and disinfecting efficiency of the hemodialysis machine is improved, meanwhile, the connecting assembly further has a scraping effect on the wall of the catheter, residues of disinfecting liquid in the catheter can be effectively reduced, the mottling phenomenon of the wall of the catheter is avoided in the subsequent drying process, and the disinfecting quality and efficiency of the catheter are further improved.

The application provides a pipetting control method and device, the method comprising: determining a pipetting type, a pipetting speed of a pipetting device, a target pipetting volume, an initial liquid volume of a target liquid container, and a container type of the target liquid container; determining a target liquid level height function matched with the container type of the target liquid container according to a liquid level height function corresponding to each container type in a configuration; determining a liquid level height difference of the target liquid container before and after pipetting based on the pipetting type, the target pipetting volume, and the initial liquid volume, and in combination with the target liquid level height function; determining a moving direction and a moving speed of a pipetting tip of the pipetting device based on the liquid level height difference, the target pipetting volume, the pipetting speed, and the pipetting type; and controlling the pipetting tip of the pipetting device to pipette the target liquid container according to the moving direction and the moving speed. The application can reduce the liquid volume deviation of the pipetting device in the pipetting process.

The application discloses a chuck assembly and a semiconductor device, relates to the technical field of semiconductor devices, and comprises a chuck and one or more shaft cylinders, wherein the last shaft cylinder of the plurality of shaft cylinders or one shaft cylinder is connected with the chuck, the inside of each shaft cylinder is provided with a central hole, the central hole is provided with a balance mass and an elastic damping piece, and the elastic damping piece is sleeved with the balance mass to form a balance mass-spring-damping system. The chuck assembly is sleeved with the balance mass through the elastic damping piece to form the balance mass-spring-damping system, the balance mass-spring-damping system generates reverse vibration matched with the vibration of the chuck, micro-vibration generated between the disc surface of the chuck and the contact surface of the substrate is inhibited, generation of friction particles is reduced, stability and cleanliness of a core area of a process environment are improved, process quality of a deposited film is improved, and the needs of high-end processes for extremely low defect rate and ultra-high uniformity of the deposited film are met.

The utility model discloses a reinforcing steel bar positioning structure for slope protection engineering, which comprises a soil slope and a fixing mechanism, the fixing mechanism comprises a transverse reinforcing steel bar, the surface of the transverse reinforcing steel bar is movably connected with a plurality of vertical reinforcing steel bars, and the crossed positions of the transverse reinforcing steel bar and the vertical reinforcing steel bars are fixed through binding iron wires. The front faces of the transverse steel bars are movably connected with a plurality of downwards-inserted steel bars, the bottom ends of the downwards-inserted steel bars are inserted into the soil slope, and a positioning mechanism is arranged at the top of the soil slope. In the practical application process of the reinforcing steel bar positioning device, the reinforcing steel bar positioning stability is greatly improved through the synergistic effect of the fixing mechanism and the positioning mechanism. In slope protection engineering, slope topography often leads to easy slippage of steel bars, and parts such as downward insertion steel bars and fixed steel bars in the fixing mechanism and the positioning mechanism are matched with each other, so that the steel bars can be inserted into a soil slope, the whole structure is kept on the surface of the slope, the adjustment work caused by slippage of the steel bars is reduced, and the construction efficiency is greatly improved.

The invention relates to the technical field of motors, and discloses a motor shaft insulation coating processing method, a fixing tool and a spraying device.The motor shaft insulation coating processing method comprises pretreatment and shielding, dynamic spraying, post-treatment and a second base, a spraying cavity is formed in the second base in the circumferential direction, and the spraying cavity can rotate; and the clamping piece is arranged in the spraying cavity, and the clamping piece fixes and rotates the motor shaft along the axis of the motor shaft. The clamping piece is arranged to fix the motor shaft, the axial parallelism of the motor shaft and the second base is improved, when the spraying cavity rotates and ascends and descends and a spraying opening of the spraying gun ascends and descends, the motor shaft can be still relative to the second base, the position precision of the motor shaft and the second base is guaranteed, and then the distance between the motor shaft and the spraying gun is kept stable; therefore, the thickness uniformity of the insulating coating on the surface is ensured, the insulating effect is ensured, a plurality of motor shafts are sequentially sprayed, and the spraying efficiency is improved.

The utility model provides a kind of pipeline defect detection probe, including probe body and limiting component, the limiting component is installed on probe body and is used to support and limit for probe body;The limiting component is set along the circumferential direction of the probe body, the limiting component includes first flexible member and the second flexible member being connected with the first flexible member, the first flexible member is rotationally connected with the probe body at the end away from second flexible member;The first flexible member and second flexible member are all inclined to be arranged, and the included angle formed between the first flexible member and the probe body axis;The utility model can solve the surveying device recorded in the prior art when surveying in different pipe diameters, water flow will cause impact to detection device;Make that detection sensor deviates from pipe axis, cause the distance between detection sensor and pipe wall unstable, affect signal coupling efficiency while also leading to the problem of detection blind area.

The invention relates to the technical field of automobile welding fixtures, and discloses an automobile welding fixture with accurate welding points, which comprises a welding table, and further comprises a bracket, a welding point positioning device, a welding point positioning device and a welding point positioning device, the two clamping mechanisms are symmetrically arranged above the welding table and used for clamping the two steel pipes; and the two rotating mechanisms are respectively arranged on the clamping mechanisms. The hydraulic push rod drives the rotating ring, the arc-shaped holes in the rotating ring force all the sliding rods and the movable blocks to synchronously move in the radial direction, the L-shaped clamping blocks are driven to evenly hold the steel pipe from the periphery, and therefore it is guaranteed that the clamping force is evenly distributed, and automatic high-concentricity centering of the steel pipe is achieved; the defects of weld joint misalignment, uneven wall thickness and the like caused by manual clamping eccentricity are fundamentally eliminated, a foundation is laid for forming a high-quality annular butt weld joint, meanwhile, the locking force provided by hydraulic driving is large and adjustable, thermal deformation stress and vibration in the welding process can be effectively resisted, and the clamping state is kept absolutely stable.

The invention belongs to the technical field of visual inspection, and particularly relates to a conveyor belt defect visual inspection device and method. The conveyor belt defect visual inspection device comprises a bedplate, a rack, a traction mechanism, a visual mechanism and a stretching mechanism; a pair of racks is arranged, and the tops of the racks are fixedly connected with a track beam; a pair of sliding blocks is connected into the track beam in a sliding mode. A spring is arranged between the sliding block and the track beam; a hydraulic cylinder is fixedly connected to the surface of the rack; and a connecting rod is hinged between the output end of the hydraulic cylinder and the pair of sliding blocks. The hydraulic cylinders push the sliding blocks to slide towards the two sides along the track beam through the connecting rods, the distance between the pair of supporting rollers is gradually increased, the conveying belt is stretched and deformed in the length direction of the conveying belt, the conveying belt is in a tensioned state, the real tensioning working condition of the conveying belt in the using process is fully simulated, potential defects on the surface of the conveying belt are more obviously exposed, and the conveying belt is more stable in performance. Particularly, tiny cracks, wrinkles or delamination and the like can be conveniently and accurately detected and identified by a follow-up visual mechanism.

The full-localization video decoding board comprises a processor adopting a domestic chip, an FPGA (Field Programmable Gate Array), a storage unit, an interface unit and a power supply system, the interface unit comprises a first connector and a second connector; a serial port of the processor is connected to the first connector through the serial port conversion chip; the output end of the processor is connected with the receiving end of the FPGA; the FPGA is connected to the second connector through the first conversion chip and the second conversion chip in sequence; the first conversion chip is used for converting an RGB signal output by the FPGA into a VGA single-ended signal and accessing the VGA single-ended signal to the second conversion chip; the second conversion chip is used for converting the VGA single-ended signal into an XGA signal and outputting the XGA signal to the second connector; the FPGA is further connected to the second connector through a third conversion chip, and the third conversion chip is used for converting RGB signals output by the FPGA into VGA single-end signals and outputting the VGA single-end signals to the second connector. The utility model has the advantages of simple circuit structure, low cost, strong compatibility, high transmission stability and the like.

This invention belongs to the field of machine tool processing technology, specifically a broken tool detection device for a CNC machine tool tool magazine. It includes a tool magazine body and a detection mechanism. The tool magazine body has a rotatable circular tool disc and multiple flip-up tool sleeves. The detection mechanism, located near the tool change point, includes a mounting bracket, a geared motor, a rotary bearing, and a tool detector. The geared motor drives the rotary bearing and the tool detector to rotate. This invention correlates the rotational motion of the detection mechanism with the flipping motion of the tool sleeves from the vertical tool change position to the horizontal tool storage position. This allows the tool detector to perform follow-up detection of the tool during the tool sleeve flipping process, achieving comprehensive detection of at least two different surfaces of the tool. Furthermore, it includes a control unit pre-stored with standard tool contour data, which determines whether the tool is damaged by comparing the detection data in real time. This invention has a simple structure, comprehensive detection, and a high degree of intelligence, effectively preventing workpiece scrap and machine tool damage caused by broken tools.