3885results about How to "Reduce installation difficulty" patented technology

The invention relates to an anti-back-splash sand blasting perforator, which comprises a body and a nozzle, wherein a groove is formed in the outer wall of the body; an installation hole is formed in the middle of the groove; the side wall of the groove is inclined; the nozzle is installed in the installation hole; the outer end of the nozzle stretches out from the bottom surface of the groove. The anti-back-splash sand blasting perforator is simple in structure, less in parts, and easy to process and assemble; through the arranged groove and a bulge on the outer end of the nozzle, a flow guide structure is formed around the nozzle, so that back-splash liquid can be timely and uniformly flown when back splashing on the perforator, can be prevented from forming vortex in the groove, and can be prevented from flowing in the groove for a long time; the erosion of the back-splash liquid on the perforator is reduced, and the service life of the perforator is improved.

A vehicle tracking unit may include a housing, a vehicle position determining device, a wireless communications device, and a controller carried by the housing. The controller may cooperate with the wireless communications device and the vehicle position determining device to determine and send vehicle position information to a monitoring station. Additionally, an upgrade connector may be carried by the housing and coupled to the controller. Also, an upgrade device may be removably coupled to the upgrade connector for causing the controller to perform at least one vehicle function.

The invention provides a laser radar and a working method thereof. The laser radar comprises a transmitting device, a beam splitting device, a galvanometer and a receiving device, wherein the transmitting device is used for transmitting a first laser beam to a to-be-detected object; the beam splitting device is used for splitting the first laser beam into a plurality of second laser beams, and thepropagation directions of the multiple second laser beams are different; the galvanometer comprises a first reflecting surface, the first reflecting surface is used for reflecting the second laser beams, the galvanometer is provided with a first rotary shaft and is rotated around the first rotary shaft, and an included angle between the first rotary shaft and a normal line of the first reflectingsurface is greater than zero; the receiving device is used for receiving echo beams reflected by the to-be-detected object. The laser radar has the advantage that the larger field angle can be obtained through smaller rotation angle of the galvanometer.

The invention discloses a device for calibrating parallelism of optical axes of a multi-axis optical system, and a calibration method thereof. The device comprises a high precision autocollimation theodolite, a planar mirror, a to-be-calibrated multi-axis optical system, a pedestal, a cross target plate and a rotary platform. The multi-axis optical system and the planar mirror are both disposed on the pedestal. The pedestal is placed on the rotary platform. The cross target plate is fixed in a position 1000 times of the longest lens focal length away from the front end of the optical system. The autocollimation theodolite is disposed behind the planar mirror and is used for aiming. Through rotation of the rotary platform many times, the direction values of the planar mirror, which are measured by aiming of the autocollimation theodolite, are obtained. The directions of optical axes can be known by calculating the direction values measured many times. The difficulties in manufacturing and installing detection equipment can be reduced, less requirements of places are needed, the measuring operation is convenient, high applicability is exhibited, and installation errors of the planar mirror are eliminated. The device is suitable for measuring or calibrating parallelism of optical axes of a multi-axis optical system and a multispectral multi-axis optical system.

The invention provides a real-time dynamic measurement method for measuring radial clearance between a steam turbine rotor and a stator. The method is characterized in that the method comprises the steps of determining distance measurement devices for radial clearance, determining radial clearance between the rotor and the stator, determining the radial clearance between the rotor and the stator, determining the distance from an emitter to the surface of the rotor, calculating vertical offset amount of the rotor when the center of the rotor shifts, calculating horizontal offset amount of the rotor when the center of the rotor shifts, calculating the rotor offset amount at any position and calculating the radial clearance between the steam turbine rotor and the stator. The method can carry out dynamic measurement on the rotor labyrinth clearance and blade top labyrinth clearance of a running steam turbine accurately and quickly, thereby solving the problem that the measuring error of the radial clearance between the steam turbine rotor and the stator is large and the radial clearance cannot be measured online dynamically and accurately, ensuring safe and economical operation of the machine set and saving halt overhaul time.

The invention discloses a line current measuring method in a power system. The current value of a lead to be measured can be calculated by only obtaining first, second and third magnetic induction intensity generated by three uniaxial magnetic sensors in the magnetic sensitive directions respectively and the relative distances among the three uniaxial magnetic sensors, and the current of the leadto be measured is measured. The three uniaxial magnetic sensors are positioned in the same straight line, the straight line and the lead to be measured are not coplanar, the magnetic sensitive directions of the three uniaxial magnetic sensors are in the same direction and are in parallel with the straight line where the three uniaxial magnetic sensors are positioned. During installation, it is notrequired to fix the relative positions of primary loop lead and the three uniaxial magnetic sensors, installation is less difficult, and the measuring accuracy is improved. The invention also discloses a line current measuring device and equipment in the power system and a storage medium with the above effects.

The invention discloses an automatic washing machine with a precise detergent putting function. The automatic washing machine comprises a box body, an inner washing drum in the box body, a power system and a control system, wherein a control panel and a door cover are arranged at the top of the box body, and a nozzle body is arranged at the upper part of the inner washing drum below the door cover. The automatic washing machine is characterized in that the nozzle body is a cavity, and a water outlet is arranged forwards; an openable nozzle cover is arranged at the upper part of the nozzle body, and a detergent filling port is arranged besides the nozzle body and is communicated with a liquid storage box through a liquid filling pipe; a detergent pump is also connected between the liquid storage box and the nozzle body in parallel and is controlled by the control system, and the liquid storage box is in a flat box shape and is arranged in the box body at the back of the inner washing drum below the control panel; and the height of the liquid storage box is lower than that of the detergent filling port. The automatic washing machine provided by the invention can realize multifunctional intelligent putting of various detergents, and has the advantages of safety and reliability, attractive appearance and low design difficulty.

The invention relates to an intelligent induction shower cabin, which comprises a shower cabin and an inductive control unit, wherein the inductive control unit is used for inducing the position of a human body so as to control the opening or the closing of the shower cabin, and comprises a driving motor, a microcomputer and an infrared inductive probe; when the shower cabin is in practical operation, firstly, the infrared inductive probe detects the existence of the human body and at this time sends a signal to the microcomputer, and the microcomputer commands a driver therein so as to drive the driving motor to work according to a compiled program and to drive a movable door to be opened or closed through the driving motor.

The invention discloses a marine wind power direct current collecting power transmission system and a design method. The marine wind power direct current collecting power transmission system comprises a wind farm inner electric energy collecting module, a wind farm direct current boost module, a high voltage direct current collecting and transmission module, and a land converter station grid-connected module, wherein the wind farm inner electric energy collecting module comprises a plurality of wind power generators and AC-DC rectifiers, each wind power generator converts wind energy to three-phase alternating current electric energy, the electric energy is converted to direct current electric energy via the AC-DC rectifiers, the wind farm direct current boost module comprises a plurality of DC-DC topology structures, the energy of fans in the wind farm is collected to a direct current boost station via direct current and boosted via DC-DC converters, the high voltage direct current collecting and transmission module is used for collecting high voltage direct current electric energy outputted by each wind farm, transmitting the energy to the land via a common submarine cable, and performing grid connection via a high-capacity converter station, and the land converter station grid-connected module comprises a grid-connected converter station arranged at the land side and a direct current power transmission converter station.

The invention discloses a construction technology for prefabricating a corrugated steel web PC I beam into a combined box girder bridge. Each combined box girder segment in a combined box girder of the combined box girder bridge is formed by connecting two corrugated steel web PC I beams. The construction technology comprises the following steps: Step I, prefabricating the corrugated steel web PC I beams: pedestal prefabricating construction, installation of a soffit formwork, installation of a reinforcement cage in a bottom plate, installation of a corrugated pipe in the bottom plate, installation of a positioning bracket and erection of a side formwork, installation of a corrugated steel web, pouring of concrete on the bottom plate, installation of a top plate molding template, installation of the reinforcement cage in a top plate, pouring of concrete on the top plate, and stretch-drawing of a cable in the bottom plate; Step II, displacement and erection of the corrugated steel web PC I beams; Step III, lengthways wet joint construction; Step IV, stretch-drawing of a cable out of the bottom plate and system conversion. According to the invention, the processing steps are simple, the design is reasonable, the implementation is convenient, the construction period is short, the construction quality is high, pedestal prefabricating and the positioning bracket are combined to complete bridge prefabrication, and the construction quality of the combined box girder bridge can be effectively ensured.

The invention relates to a worm gear-worm pair backlash eliminating device adopting an enveloping worm, which mainly consists of a worm gear, a cylindrical worm, the enveloping worm, an elastic pre-tightening device and a bearing. The cylindrical worm and the enveloping worm play the main force scale division role and the resistance role respectively, and the two worms are coaxially mounted and carry out the regulation and impose the pre-tightening force on a resistance worm in the axial direction through the elastic pre-tightening device. The pre-tightening device consists of a regulating nut, two spring positioning sleeves and a pre-tightening spring, regulates and pre-tightens the resistance worm in the axial direction through the regulating nut. The elastic pre-tightening device can be one of a spring device, a hydraulic device or a pneumatic device. The resistance enveloping worm and the main force worm are coaxially mounted in the worm gear-worm pair backlash eliminating device, and the axial regulation and the pre-tightening are carried out on the resistance worm through the elastic pre-tightening device, thereby providing the more stable, high-efficient and low-noise transmission and simultaneously having the advantages of compact structure, light weight, low cost and the like. The worm gear-worm pair backlash eliminating device is applied in a transmission mechanism of a rotary workbench of a machine tool and can provide better backlash eliminating effect in comparison with a single worm gear-single worm mechanism or a double-worm gear-worm mechanism.

The invention discloses a drilling mechanism. The drilling mechanism comprises a drilling mechanism seat, wherein a drilling seat vertical plate of which an end surface faces rightwards is arranged onthe upper part of the drilling mechanism seat; a drilling mechanism mounting plate is mounted on the right side of the drilling mechanism seat vertical plate, is perpendicular to the drilling mechanism seat vertical plate and extends along a vertical plane; a drilling sliding plate guide track which extends in the vertical direction is mounted on the lower part of the front end surface of the drilling mechanism mounting plate; the drilling sliding plate guide track is connected with a drilling sliding plate through a sliding block; the upper part of the drilling sliding plate is hinged to aconnecting rod; the upper end of the connecting rod is hinged to the periphery of an eccentric wheel; the eccentric wheel is fixedly mounted at an output end of a drilling servo motor; the drilling servo motor is fixedly mounted on the upper part of the drilling mechanism mounting plate; an electric spindle which extends in the vertical direction is mounted on the lower part of the front end surface of the drilling sliding plate through an electric spindle clamping seat; and a drill bit for drilling is mounted at the lower end of the electric spindle. The drilling mechanism can carry out accurate drilling operation independently, is compact in structure and occupies small space.

The invention discloses a passive positioning mechanical arm for a propelling mechanism of an endovascular intervention surgical robot. The mechanical arm is mounted on an operating table and comprises a base module, a horizontal moving module, a lifting module, a first rotating joint, a second rotating joint and a pitch angle adjusting module, wherein the base module is mounted on the operating table; the horizontal moving module is mounted on the base module; the bottom of the lifting module is mounted on the horizontal moving module; one end of the first rotating joint is mounted at the topof the lifting module, and the other end of the first rotating joint is connected with one end of the second rotating joint; the pitch angle adjusting module is mounted at the other end of the secondrotating joint; and the surgical robot is mounted on the pitch angle adjusting module. The mechanical arm can freely adjust the horizontal displacement and angle of the surgical robot, the angle of acatheter of the surgical robot entering a blood vessel and the height of the robot in the vertical direction and lock the posture of the surgical robot to prevent shaking during an operation.

The invention provides a tower crane. The tower crane comprises a climbing frame and jacking system (100), wherein the climbing frame and jacking system (100) comprises a climbing frame (110) and a jacking system for jacking the climbing frame (110); the jacking system comprises an upper cross beam (140) connected with the climbing frame (110), a jacking cross beam (130) supported on a standard section (2) and a hydraulic system; the hydraulic system comprises a plurality of jacking oil cylinders (120) supported between the upper cross beam (140) and the jacking cross beam (130); the jacking oil cylinders (120) are arranged on the side face, which is positioned on the balance arm side, of the climbing frame (110) and two side faces, which are adjacent to the first side face, of the climbing frame (110) respectively; and more than two jacking oil cylinders (120) are arranged on at least one of the three side faces. According to the tower crane, an upward rotary self-lifting structure is adopted in a super-huge type tower crane, so that the maximum lifting height of the super-huge type tower crane is increased.

The invention discloses a numerical control machine tool operation state health diagnosis system and diagnosis method. The system comprises an edge data acquisition module, a cloud platform and a client, the cloud platform is connected with the edge data acquisition module and the client. The cloud platform comprises a predictive diagnosis module, an information management and storage module and an application server; and the predictive diagnosis module comprises a real-time diagnosis module, a post-processing diagnosis module and a comprehensive diagnosis module. According to the system, a cloud platform with a diagnosis function is used for replacing an upper computer, the expandability is greatly improved, the diagnosis and prediction tasks can be completed only by deploying corresponding sensors on the machine tool and connecting the sensors to the cloud platform, the real-time state data of the machine tool are managed in a centralized mode through the cloud platform, and the health condition of the machine tool is evaluated and predicted through the diagnosis technology based on the neural network. The diagnosis method is simpler, and the health diagnosis accuracy is high.

The invention discloses a wireless sensor network ad hoc network method for crop greenhouse cultivation in the technical field of greenhouse cultivation internet of things. A base station sends a clustering command, a hop count relationship among nodes is recorded, the node distribution density is calculated, and clusters are divided; a node receives a control instruction or a state query instruction sent by the base station, and if the node receives the control instruction, real-time monitoring and equipment regulation on the crop greenhouse cultivation growth environment information are executed according to control requirements; if the node receives the state query instruction, the self data packet transmission times are transmitted to the base station; the transmission costs of all paths are analyzed, and the path with the minimum transmission cost is selected as the optimal routing transmission path for data transmission; and after the system completes multiple times of environment information monitoring and regulation tasks, the base station carries out re-clustering according to the state information of the node. The method of the invention is applicable to an isomorphism or isomerism (node hardware isomerism) dynamic elf-organization and multi-hop transmission wireless sensor network ad hoc network.

The invention discloses an electric commercial vehicle and an electric commercial vehicle split battery pack fixing device. The fixing device comprises a support assembly arranged on a longitudinal member, wherein the support assembly comprises a longitudinal installation plate installed on the ventral surface of the longitudinal member, and a horizontal installation plate, and the horizontal installation plate is installed on the upper wing surface of the longitudinal member. In this way, during battery pack installation, the fixing device can be hung onto the upper wing surface through the horizontal installation plate, then the horizontal installation plate and the upper wing surface are fixed together and the longitudinal installation plate and the ventral surface are fixed together, the fixing device can be hung onto a vehicle body during installation, and support installation difficulty is reduced; meanwhile, the number of fixation points between the support and the vehicle body is increased, and then the rotation of the support relative to the vehicle body is effectively avoided, battery pack installation reliability is improved, and the safety of the whole vehicle and the battery pack is ensured.

The invention relates to an eccentric screw and a method for assembling and constructing the eccentric screw. The eccentric screw comprises a screw cap, a screw neck, a screw post, and a female screw, wherein the screw cap whose section is a round shape and is integrated with the eccentric screw. The diameter of the screw post is smaller than the diameter of the screw neck, the screw post and the screw neck are connected eccentrically, namely that the axial center of the screw post b is not superposed with the axial centers of the screw cap and the screw neck, a parallel notch is opened on the top face of the screw cap, and the parallel notch penetrates simultaneously through the axial centers of the screw cap and the screw neck and the axial center of the screw post. And one end of the parallel notch which penetrates the axial centers of the screw cap and the screw neck is stretched to the edges of the top face of the screw cap, and the end of the parallel notch which penetrates through the axial center of the screw post is not stretched to the edges of the top face of the screw cap. The eccentric screw can regulate the location of a decorative plate without regulating a keel, and more easily controls the global paleness, and assembly type construction increases the speed of the construction.