158results about How to "Accurate angle adjustment" patented technology

The invention provides a multi-angle object water entry and wave-making motion experimental device, which is a novel water entry experimental device with various water entry modes, a controllable water entry angle and a controllable water entry speed. The device is applied to water and underwater wave-making experiments when a model has a different immersion depth. The device of the invention is composed of an experimental water tank, a driving system, a power cabinet, a control system and a high-speed camera system, wherein the driving system is composed of a supporting frame, a horizontal experimental table, a vertical experimental frame and an angle connector, and the angle connector is connected with the horizontal experimental table and the vertical experimental frame, thereby realizing linkage of a horizontal motion and a vertical motion of the system and adjusting a structure water entry depth. Through respectively controlling speed values of the horizontal experimental table and the vertical experimental frame, oblique water entry, variable speed water entry and wave-making motion experiment can be realized. The device has the advantages of various experimental means, high result accuracy, high device utilization rate, high equipment adaptability and the like.

The invention discloses a three-dimensional ice form detection instrument, which comprises externally purchase components such as a laser, a CCD camera, a step motor, a steering engine and the like. The three-dimensional ice form detection instrument also comprises a movement sub platform and a rotation sub platform, wherein the movement sub platform and the rotation sub platform are used for installing the externally purchase components, the movement sub platform is used for supporting the rotation sub platform to make the rotation sub platform move in the horizontal direction, and two guide rails arranged on the rotation sub platform can make the laser and the CCD camera be regulated to an angle satisfying the collection. The three-dimensional ice form detection instrument designed by the invention is based on the visual ice forms, can intuitively display the icing forms in an image mode, provides the visual technical solution scheme for researchers to accurately identify the three-dimensional ice forms and to obtain the dimension data of the ice forms, has important significance and practical value of the later stage study of influence of icing on the aircraft aerodynamic performance, and provides test verification detection measures for the three-dimensional ice forms obtained through calculation.

The invention relates to a lawn mower (1); which has cutting width adjustment mechanism, cutter housings articulating mechanism and which provides convenient servicing and storage positions. The lawn mower (1) comprises a seat (3) defining an operator position, a front mounted cutting deck (8), and at least a first cutter bar enclosed in a first cutter housing (12) rotatable about a first vertical axle (Yl) and a second cutter bar enclosed in a second cutter housing (13) rotatable about a second vertical axle (Y2), a hinge mechanism for connecting footplates (6a-6b) to the lawn mower (1), a pivot support arm (5) for connecting a steering wheel (4) to the lawn mower (1), a movable arm (10) for lifting the lawn mower (1) to an upright position, the first and second axles (Yl, Y2) being spaced from each other by a transversal distance (d), wherein the transversal distance (d); between the axles (Yl, Y2) can be adjusted to increase or decrease. Moreover, the cutter housings (12, 13) can change an angle and a height with respect to a transverse centre axis (C2) of a centre cutter housing (11). Further, the footplates (6a- 6b) can fold up towards the lawn mower (1) and the steering wheel (4) can also rotate towards the seat (3) of the lawn mower (1), to allow the movable arm (10) to lift the cutting deck (B) to an upright position.

The invention belongs to the technical field of laser precision detection and discloses an integrated laser probe component analyzer for macroscopic and micro-area component analysis. The integrated laser probe component analyzer comprises a laser, a frequency multiplication module, two cage-type cubes, two laser wavelength reflectors, an industrial camera, a spectrum collector, an object lens converter, a focusing object lens, a spectrometer and a computer. A front end of a light outlet of the laser is provided with the frequency multiplication module. The laser is in an electric signal communication relationship with the computer. The integrated laser probe component analyzer can realize accurate qualitative analysis and high-precision quantitative analysis of macroscopic and micro-area components, can realize fast seamless switching of macroscopic and micro-area component analysis, has a modularization design and a compact structure, and improves an equipment integrated level. All the modules have independent functions and can be operated and maintained easily. Through the optical path modularization design, users can conveniently carry out optical path calibration before use so that operation time is saved and an analysis precision is improved.

The invention discloses a rock test piece manufacturing mold capable of adjusting the joint angle and position and a using method. The manufacturing mold comprises a detachable rectangular mold groove, a position adjusting device composed of a steel plate ruler and a positioning sliding straight rod, an angle adjusting device internally provided with a mold piece fixing plate, and a mold piece made of polystyrene, wherein all the components are connected and fixed through self-tightening bolts, nuts and other parts, mold dismounting is convenient, and manufacturing of rock-like test pieces isfacilitated. The manufacturing mold is advantaged in that a rock-like sample of a prefabricated cross joint can be manufactured, the included angle and the position of the cross joint can be accurately controlled, research on diversified joint forms of the rock-like sample is facilitated, the obtained result is accurate in size data, and the manufacturing mold is simple in manufacturing mode, capable of being repeatedly used and beneficial to popularization.

The invention discloses a four-side rounded corner welding fixture for a water tank, and relates to the technical field of the water tank processing. A bracket is provided with a horizontal bottom plate. The horizontal bottom plate is fixedly provided with two parallel sliding plates through a slider. The slider is slidably connected with a sliding rail on the horizontal bottom plate. The bottom of the sliding plates is rotatably connected with a horizontal screw rod through nuts. One end of the horizontal screw rod is connected with a horizontal hand wheel. The sliding plates are provided with a polish shaft. The polish shaft is connected with a main shaft body through a linear bearing. The main shaft body is slidably connected with a regulating main shaft through a regulating main shaftrail. The inner side of the regulating main shaft is provided with a push cylinder. The push cylinder is in the drive connection with a cylinder push plate. The sliding plates are provided with a longitudinal screw rod. One end of the longitudinal screw rod is connected with a longitudinal hand wheel. The longitudinal screw rod is connected with the main shaft body through the nuts. Compared withthe traditional manual welding, the position is accurate, the welding efficiency is high, the different sizes of the water tanks can be welded, products with the different angles can be welded, and the welding cost is reduced.

The present invention provides a device and method for detecting concave grating resolution and diffraction efficiency. The device comprises a monochromatic light emitting unit, an imaging unit which is arranged on a monochrome light path, a detection unit, a processing unit and a control unit; the monochromatic light emitting unit, the imaging unit, the detection unit, the processing unit and the control unit are connected sequentially; the monochromatic light emitting unit leads test-used monochromatic light into the imaging unit through an optical fiber; spectral intensity is received by a detector in the detection unit; and finally data in the detector are recorded, analyzed and processed by the processing unit, so that data about concave grating resolution and diffraction efficiency can be obtained. The device for detecting the concave grating resolution and diffraction efficiency of the invention is advantageous in simplicity, few required professional devices and simple operation, and can realize simultaneous detection of the resolutions and diffraction efficiencies of various types of concave gratings and can also realize fast detection of the resolutions and diffraction efficiencies of concave gratings of different types and different sizes in a wide band range.

The invention discloses a portable fish finder energy converter fixator with the adjustable angle and an application method. The portable fish finder energy converter fixator comprises a horizontal rod, a vertical rod, first fixing frames, a second fixing frame and an energy converter fixing head, wherein the first fixing frames comprise fixing ends and clamping ends, the fixing ends can be detachably fixed to multiple different positions of the horizontal rod, and the clamping ends are used for being fastened on one side of a ship and connected to the positions below the first fixing ends; the second fixing frame is connected to the outer end of the horizontal rod and detachably fixed to multiple different positions of the vertical rod; the energy converter fixing head is connected to the lower end of the vertical rod and provided with an angle adjusting device which can adjust the angle of an energy converter. The invention further discloses the application method of the portable fish finder energy converter fixator. By the adoption of the fixator, different ships can be conveniently mounted and demounted, the fixator is convenient to carry, the horizontal distance between the energy conveyer and a ship body and the underwater penetration of the energy converter can be adjusted, the energy converter can be conveniently lifted out of water, and the fixator is provided with an angle meter which can accurately regulate the angle of the energy converter.

The invention discloses a full-automatic tube sheet welding tool platform. A working table is provided with a plurality of strip-shaped track grooves, tube sheet clamping mechanisms are arranged in the strip-shaped track grooves correspondingly, and a drive mechanism is arranged in a machine box; the upper end of a curvy swing arm is fixedly connected with a round disc, and the lower end of the curvy swing arm is movably hinged to a telescopic mechanism; a rotating shaft penetrates through the round disc, a clamp base sleeves the rotating shaft, and the clamp base is provided with a pluralityof clamping servo drive modules in a radiation mode; the first side of a L-shaped clamping block is located at the tip of the telescopic movable end, the second side of the L-shaped clamping block islocated on the side surface of the side, back to the round disc, of the telescopic movable end, and the second side of the L-shaped clamping block is further fixedly connected with a clamping stop block. The full-automatic tube sheet welding tool platform is used for welding practical teaching of tube sheets and tube sheets, plates and plates and the tube sheets and the plates, the welding assembling efficiency and welding assembly precision are improved, the labor intensity is relieved, welding operators quickly clamp workpieces in practical teaching and welding skill competitions, and the welding position is flexibly adjusted for welding operation.

The invention discloses a machine tool clamp capable of adjusting an angle conveniently. The machine tool clamp comprises a fixing plate, a push plate is arranged on the top of the fixing plate, a swivel nut is fixedly arranged on one side of the push plate, a screw rod is movably connected with the interior of the swivel nut, the screw rod penetrates through a thread hole formed in the middle ofthe fixing plate to be fixedly connected with a rotating rod, the two sides of the bottom end of the push plate are fixedly provided with convex columns in sliding connection with sliding grooves formed in the two side edges of the fixing plate, a clamping column is fixedly arranged at the bottom of the fixing plate, a disc is arranged at the bottom end of the fixing plate, and a plurality of clamping holes are formed in the disc at equal intervals. According to the machine tool clamp capable of adjusting the angle conveniently, clamping force to objects can be adjusted within a reasonable range through a pressure switch and an indication lamp, the problem that objects are damages since clamping force is too high is avoided, the rotating angle of the fixing plate can be accurately adjustedthrough cooperation of a pointer and a dial gauge, it can be ensured that the fixing plate will not move after the angle is adjusted through the cooperation of the clamping column and the clamping holes, and influences are prevented from being produced to work.

The invention discloses a stable and comfortable wheel-crawler combined building-climbing wheelchair. The stable and comfortable wheel-crawler combined building-climbing wheelchair comprises a wheelchair body and a wheeled mechanism for driving the wheelchair body to move. The two sides at the bottom of the wheelchair body are also provided with a caterpillar walking mechanism, which is a caterpillar rotating device for adjusting the angle of the caterpillar walking mechanism. The crawler rotating device is arranged at the rear end of the two crawler traveling mechanisms. The crawler rotatingdevice and the wheeled driving device are drivingly connected to drive the crawler traveling mechanism and the wheeled mechanism to move. The rear end of the caterpillar traveling mechanism is connected with the wheelchair body through the caterpillar rotating device so as to change the relative height of the caterpillar traveling mechanism and the wheeled mechanism. The rear end of the caterpillar walking mechanism is also provided with a rear wheel cushioning device to reduce the impact of the staircase on the wheelchair when descending. The invention can precisely adjust the crawler angle,so that the climbable building wheelchair can not only maintain the normal sitting posture of the human body in the process of ascending and descending stairs, but also can smoothly, comfortably and safely travel, and the stability of the mechanism is improved.

The invention belongs to the technical field of water pump manufacturing, and particularly relates to a water pump impeller surface finish machining method. The method includes the following steps offirstly, immersing a cast water pump impeller in grinding liquid, placing the water pump impeller onto a machine tool so that the circumferential surfaces of a front cover and a rear cover of the water pump impeller can be ground; secondly, grinding blades of the ground water pump impeller; and thirdly, clamping the ground water pump impeller on a water pump impeller surface fine machining deviceso that the blades of the water pump impeller can be polished. By means of the water pump impeller surface fine machining device in the third step, the blades are polished, the blade surface machiningprecision uniformity is improved, the stability of the water pump impeller in the machining process is improved, and machining precision is further improved.

The invention discloses an ion implantation system. The system comprises an ion source and an extractor, wherein a mass analyzing magnet, a correcting magnet and a workpiece scanning device are arranged on the transmission path of the ion beams in sequence. The system also comprises a scanning magnet arranged on the upper stream of the correcting magnet and a beam current measuring device arranged in the implantation position, wherein the scanning magnet is used for scanning the passing ion beams so as to ensure distribution of the ion beams which are arranged in the implantation position and in the preset energy range in the ion beam scanning direction to cover the workpiece; and the beam current measuring device is used for measuring the intensity and angle distribution of the beam current in the scanning direction of the ion beams. The invention also discloses an ion implantation method realized by the ion implantation system. The system and the method have the following positive effects: accurate control of the implantation angle uniformity and implantation intensity uniformity of the ion beams can be realized; the production cost is lowered; and the process flows are simplified.

The invention relates to the technical field of assembly type heat preservation wallboards, and particularly relates to an assembly type building heat preservation wallboard convenient to install and a construction method thereof. The assembly type building heat preservation wallboard convenient to install used in the method comprises an installation frame, wherein a heat preservation structure is arranged on the inner side of the installation frame, a sealing structure is installed on the side face of the installation frame, a positioning structure abuts against the side face of the installation frame, a calibration structure is installed at the end of the positioning structure, a reinforcing structure is arranged on the side face of the installation frame, and a modification structure is slidably connected to the side face of the installation frame. The heat preservation structure can facilitate installation of the heat preservation wallboard of a high floor, the sealing structure can seal and fix an installed panel, the positioning structure can accurately position the installation position of the wallboard, the calibration structure can ensure the flatness of the wallboard after bonding, the reinforcing structure can further reinforce the fixed wallboard, and the modification structure can improve the attractiveness after installation.

The invention discloses a lifting cradle head based on a ball screw. The lifting cradle head comprises a support, the ball screw and a guide rod which are arranged on the support, a lead screw bearingmatched with the ball screw, a flange bearing in sliding fit with the guide rod, supporting rods, a lower plate, an upper plate and a stepping motor; the stepping motor is fixed on the support and isin driving connection with the ball screw; the lower plate is fixedly connected with the lead screw bearing and the flange bearing; one ends of the supporting rods are movably hinged to one end of the lower plate, and the other ends of the supporting rods are movably hinged to one end of one the upper plate; and the other end of the upper plate is movably hinged to one end of the support. According to the lifting cradle head, the ball screw and the stepping motor are combined to use so that the angle can be accurately adjusted; according to driving the stepping motor, pitching can be realizedby controlling the motor; and the lifting cradle head has the advantages that operation and structure are simple, the bearing force is large, the telescopic ratio is large, the occupied space is small, and a simple, practicable, fast and reliable pitch angle adjusting process can be realized on an object throwing robot.

A pitch angle adjusting device of a picture frame comprises a platform, a stepping motor, a hinge, a worm, a worm supporting arm, a worm gear, a worm gear supporting frame, a lead screw, a lead screw supporting arm, a motion assembly, the picture frame, a picture frame supporting seat, an angular instrument and a computer. The problems that due to limiting instability of a spring mechanism, the angle of an optical element drifts, and due to the fact that dead areas exist in the reciprocating motion of a guide rail mechanism, repeated locating precision is reduced are solved. The motion assembly comprises two inner rings, two outer rings and outer ring fixed sleeves. The pitch angle adjusting device has the advantages that rigid connection and structural stability between structural parts are good, the pitch angle precision of the picture frame is adjustable, the device is light and easy to maintain, the pitch angle adjusting device is applied to an optical element of a high-power laser device to adjust the angle, and batch production can be achieved.

The invention discloses a laser interferometer used for material surface inner deformation and strain field measurement, and an application method. A slide table set is composed of one long-stroke slide table and two short-stroke slide tables, the long-stroke slide table is fixed on an installation panel, the two short-stroke slide table are vertical to each other, and the installation panel is a T-shaped panel and is used for installing the slide table set, support circular pipes, angle pointers and an interferometer base; the two support circular pipes are respectively disposed at the two sides of the slide table set and are equally distanced from the slide table set; the input ends of fiber collimators are connected with fibers, and collimation parallel light whose light beam diameter is 50 mm is obtained at output ends; lens barrel clamps are fixed at the end portions of the support pipes and are used for installing the fiber collimators; the interferometer base is used for adjusting and fixing the space position of the interferometer, and the interferometer base is connected with the installation panel through a bolt; one end of each support circular pipe is connected with the panel and the angle pointers, and the other ends of the support circular pipes are connected with the lens barrel clamps; and an industrial CCD camera is fixed on the short-stroke slide table of the slide table set through a connecting plate.

The invention discloses a three-dimensional ice form detection instrument, which comprises externally purchase components such as a laser, a CCD camera, a step motor, a steering engine and the like. The three-dimensional ice form detection instrument also comprises a movement sub platform and a rotation sub platform, wherein the movement sub platform and the rotation sub platform are used for installing the externally purchase components, the movement sub platform is used for supporting the rotation sub platform to make the rotation sub platform move in the horizontal direction, and two guiderails arranged on the rotation sub platform can make the laser and the CCD camera be regulated to an angle satisfying the collection. The three-dimensional ice form detection instrument designed by the invention is based on the visual ice forms, can intuitively display the icing forms in an image mode, provides the visual technical solution scheme for researchers to accurately identify the three-dimensional ice forms and to obtain the dimension data of the ice forms, has important significance and practical value of the later stage study of influence of icing on the aircraft aerodynamic performance, and provides test verification detection measures for the three-dimensional ice forms obtained through calculation.

The invention relates to an internal medicine detector, and relates to the field of detectors. The internal medicine detector comprises a propping piece, a supporting piece, a clamping piece, a multi-angle rotating piece, two sliding rod pieces, an oral cavity splitting piece and a detection piece, wherein the propping piece is connected to the supporting piece; the supporting piece is connected to the clamping piece; the multi-angle rotating piece is connected to the propping piece; the two sliding rod pieces are movably connected to the multi-angle rotating piece; the two sliding rod piecesare fixedly connected with two ends of the oral cavity splitting piece; and the detection piece is connected to the middle of the oral cavity splitting piece. The internal medicine detector disclosedby the invention adopts the oral cavity splitting piece, so that a patient can be assisted to open the oral cavity and keep the opening state for a long time, a doctor can conveniently see through theinner part of the oral cavity and the throat; the expanding angle of the adopted oral cavity splitting piece can be adjusted, so that when expanding is performed on patients of different mouth types,the optimal oral cavity splitting angle can be conveniently adjusted according to actual situations, and preferable oral cavity diagnosis is performed.

A single shaft framework angle adjustment system comprises an angular position sensor, a digital quantity output module, an analog quantity output module, a corrective network and a torque motor. The angular position sensor monitors the angle information of a single shaft framework in real time and outputs a sine signal and a cosine signal at the same time; the digital quantity output module receives the signals output by the angular position sensor, converts the signals into digital signals with single shaft framework angle information and outputs the digital signals in real time; the analog quantity output module converts the single shaft framework angle information in the sine signal transmitted by the angular position sensor into a real-time voltage signal and inputs the real-time voltage signal to the corrective network; the corrective network calculates the difference value of the received real-time voltage signal and an external reference voltage signal to obtain a torque motor control signal; and the torque motor receives the torque motor control signal from the corrective network, and then begins to work and drive the single shaft framework to rotate, thereby realizing adjustment of the angle of the single shaft framework. The real-time control of the angle of the single shaft framework is added in the single shaft framework angle adjustment system.

The invention provides a chain type angle-adjustable lifting device for overall disassembly and assembly of an air cylinder unit. The chain type angle-adjustable lifting device comprises an adjustingmechanism, a force applying mechanism, an anti-rotation self-locking mechanism, an intermediate shaft and a lifting support. The adjusting mechanism comprises a gear set, a chain, a fixing plate and agravity center fine adjustment assembly. The gear set is fixed to the middle of the lifting support through the intermediate shaft. The chain is engaged with the gear set. The fixing plate is fixedlyconnected with one end of the chain. The gravity center fine adjustment assembly is fixedly connected with the other end of the chain. The force applying mechanism penetrates through the first side of the lifting support to be connected with the gear set in an engaged mode. The anti-rotation self-locking mechanism penetrates through the second side of the lifting support to be connected with thegear set in an engaged mode. According to the chain type angle-adjustable lifting device, the air cylinder unit can be independently disassembled and assembled without the help of adjacent cylinders,and the chain type angle-adjustable lifting device is light, small, exquisite, safe, reliable, accurate in angle adjustment and capable of being operated by one person.

The invention relates to a gumming machine for a belt pulley scrubbing ring. The gumming machine is characterized by comprising a rack (1), wherein a control cabinet (17), two uprights (3), a motor (19), a gum material barrel (10) and a starting switch (16) are respectively connected onto the rack; linear sliding rails (24) and fixed plates (5) are connected onto the uprights by means of horizontal regulating bases, connecting plates (26) and air cylinders (6) which are mutually connected are arranged on the linear sliding rails and the fixed plates, the connecting plates are connected with dispensing valves (7), a single-line gum discharging pipe (8) and a dual-line gum discharging pipe (9) are respectively connected onto the two dispensing valves; an output shaft of the motor is connected with a rotary tray (20) where the single-line gum discharging pipe and the dual-line gum discharging pipe are correspondingly matched. The gumming machine has the advantages that gum application is controlled by virtue of the air cylinder and the motor, so that the automation, one-touch operation and uniformity and consistency of coated gum layers of the gum application are realized, the convenience is brought for the operation, the gum applying speed is high and the efficiency is high.

The invention discloses singeing equipment with dedusting and drying functions. The singeing equipment comprises a dedusting brush roller, a carding device, a singeing device and a drying device, wherein the dedusting brush roller, the carding device, the singeing device and the drying device are successively arranged from right to left. A static attracting board is arranged between dedusting brushes of a dedusting brush roller. The carding device comprises a driving wheel, a carding belt and a driven wheel. A plurality of carding needles are uniformly arranged on the carding belt. The singeing device comprises a singeing table and a mounting rack which are vertically arranged. The mounting rack is internally provided with a spraying head, a reservoir, a singeing machine, an isolating pawland an isolating pawl adjusting mechanism. The spraying head is mounted at the inlet of the mounting rack and is connected with the reservoir. The isolating pawl comprises a pawl body and a dust storage chamber which are vertically connected. The isolating pawl adjusting mechanism is mounted at the lower end of the isolating pawl. The dedusting brush roller and the carding device realize sufficient straightening of hairs on fabric, and then fine hairs on the fabric are singed through the singeing device. The singeing equipment ensures high singeing effect and realizes no fabric damage.

The invention discloses a combustible tilting burning characteristic experiment device capable of controlling temperatures, humidity and oxygen concentration. The device comprises an experiment table, an analysis control cabinet and a gas storage cylinder group, wherein the gas storage cylinder group is connected with the analysis control cabinet and provides gas required by an experiment, and the analysis control cabinet adjusts gas parameters and analyzes experiment data, and the experiment table records the experiment data, transmits the experiment data to the analysis control cabinet and receives the gas from the analysis control cabinet. Gas mixing and the temperature increasing and humidification process are realized by the use of gas mixing control elements and constant temperature and constant humidity control elements, so that the nitrogen and oxygen proportion of gas and the temperature and humidity of gas can be effectively controlled, the mass loss rate, the sample surface temperature and the smoke toxicity in the combustible burning process under the conditions of different environments (different humidity and different oxygen concentrations) are evaluated and analyzed quantitatively in real time, and the tilting burning characteristic of the combustible is evaluated quantitatively.

The invention belongs to the technical field of mechanical test equipment, and relates to a test bed for simulating reliability of a power servo knife rest of a numerical control machine tool under areal working condition. The test bed is mainly composed of a power servo knife rest support part, a cutting force loading part, a torque loading part, and a cutting fluid spray protection and cuttingfluid recovery device; the cutting fluid spray protection and cutting fluid recovery device is located on the upper part of the power servo knife rest support part; the cutting force loading part is located on one side of the power servo knife rest support part, and a loading rod in the cutting force loading part directly faces the power servo knife rest; and torque loading part is placed facing the power servo knife rest. The test bed is applicable to power servo knife rests of different central heights; the function of replacing the servo power knife rests without changing a cushion plat canbe realized; by implementing the cutting fluid spray protection and cutting fluid recovery device, the test bed is more similar to the real working condition; a screw guide rail is adopted to move, ahand wheel is shaken, and the XYZ three-dimensional movement can be realized; and the hand wheel and a fine adjustment nut are adopted, so that the adjusting angle is more accurate.

The invention discloses a light reflecting film and a photovoltaic battery assembly. The light reflecting film comprises a base layer and a light reflecting layer, wherein the light reflecting layer is laid on the base layer, the surface of the light reflecting layer is provided with multiple light reflecting microstructures arranged in parallel, each light reflecting microstructure includes multiple light reflecting surfaces forming different angles with the base layer, the light reflecting surfaces are used for reflecting incident light and controlling the angle between the reflected light and a vertical line of the base layer to be within 10-30 degrees, and the reflected light and the incident light are located at the same side taking the vertical line of the base layer as a boundary line; and the angle of the reflected light is controlled through setting the angle of the light reflecting surfaces, and the light reflected to the photovoltaic battery surface is enabled to be controlled within a small angle, thereby enabling the light to directly irradiate on the photovoltaic battery surface to the greatest extent, and thus achieving the purposes of vertically reflecting the incident light irradiated a welding strip and a gap of battery strings to the greatest extent and improving the utilization rate of light energy irradiated on the surface of the welding strip and the gap of the battery strings.

The invention relates to the technical field of lifting and hoisting, and discloses an elevator cab with monitoring and distance measuring functions, which comprises a cab shell, a safety door is arranged on one side of the cab shell, a glass window is arranged at the front end of the cab shell, and a lifting protective fence is arranged on the outer side, close to the glass window, of the front end of the cab shell. A monitoring distance measuring device is installed at the top end of the cab shell, and the lifting protective fence comprises a lifting mechanism and a grating located at the front end of the lifting mechanism. Through the telescopic rotating arm, the first motor, the telescopic assembly, the second motor, the second rotating arm and the third rotating arm of the monitoring and distance measuring device, the angle and height of the camera and the infrared distance measuring probe can be accurately adjusted, monitoring and distance measuring can be conveniently carried out on different positions, and the practicability is high; the grid can be controlled to be opened and closed through the lifting mechanism of the lifting protective fence, so that a driver can conveniently communicate with ground personnel when necessary, and the safety is high.

Disclosed is an anterior cervical surgery gap retractor comprising a plurality of retractors, each retractor comprises a telescopic rod, one end of each telescopic rod is connected with a retracting rod through a joint structure, the end of each retracting rod is of a sharp structure, and each retracting rod is provided with a hollow depth limiting ball. The depth limiting ball comprises a lower hemisphere part fixed to the retraction rod and an upper hemisphere part slidably connected with the retraction rod, a plurality of leakage holes are formed in the lower hemisphere part, the other end of the telescopic rod is slidably connected with the guide rail, and a fixing piece is fixed to the guide rail and can be fixedly connected with an operating bed. A good surgical field of vision is exposed. And the labor intensity of medical staff is reduced.

The invention discloses a boring machine for irregularly-shaped holes of a connecting rod. The boring machine comprises a first boring mechanism and a second boring mechanism, wherein the first boring mechanism and the second boring mechanism are arranged on a machine body in parallel; a connecting rod fixture is arranged on the machine body; the second boring mechanism and an elliptical adjusting mechanism are arranged in a mutually cooperative manner; and the elliptical adjusting mechanism comprises a driving part and a driven part, the driven part is fixedly connected with the second boring mechanism, the driving part operates to drive the driven part to rotate, so that the axis of the second boring mechanism deviates, the connecting rod fixture drives the connecting rod to be fed, and machining of the irregularly-shaped holes is finished. By means of the first boring mechanism cooperating with a big-end hole of the connecting rod and the second boring mechanism cooperating with a small-end hole of the connecting rod, machining of the big-end hole and the small-end hole of the connecting rod can be finished after one time of positioning and clamping. By means of cooperative arrangement of the elliptical adjusting mechanism at the second boring mechanism cooperating with the small-end hole of the connecting rod, the axis of the second boring mechanism can deviate under driving of the elliptical adjusting mechanism, and an elliptical hole can be machined during feeding of the connecting rod driven by the connecting rod fixture.