1905results about How to "Compact design" patented technology

The invention discloses a pallet protection corner automatic putting machine. The pallet protection corner automatic putting machine comprises a top protection corner putting combination machine and aside face protection corner putting combination machine; the top protection corner putting combination machine comprises a bottom circulation base and a pair of top protection corner single machines,the side face protection corner putting combination machine comprises a bottom fixed base and four side face protection corner single machines, the top face protection corner single machines are provided with electrical control parts, top protection corner containing grooves, limiting mechanisms, and top protection corner mounting claws, the top protection corner mounting claws grab protection corners in the top protection corner containing grooves, and put the protection corners on four edges of the top of a packaging box, each side face protection corner single machine comprises a second electrical control part, a side protection corner containing groove, and a side protection corner mounting claw, and the side protection corner mounting claws grab the protection corners in the side protection corner mounting grooves and put the protection corners on the four sides of the side face of the packaging box. The pallet protection corner automatic putting machine is reasonable in layout,smooth in operation, high in adaptation, automatic in full process, free of artificial duty and capable of greatly improving protection corner putting and threading packaging capacity.

The invention relates to a humanoid robot lower limb structure and a robot. The lower limb structure comprises a hip unit, a thigh unit, a shank unit and a foot unit. The hip unit comprises a hip seat body, a first joint structure, a thigh swing drive, a thigh rotation drive and a thigh side-sway drive; the first joint structure comprises a first movable seat and a second movable seat; the thigh swing drive is mounted on the inner side of the hip seat body, and an output rotating shaft of the thigh swing drive is connected with the first movable seat; the thigh rotation drive is fixedly connected with the second movable seat, and an output rotating shaft of the thigh rotation drive is connected with the upper end of the thigh unit; the thigh side-sway drive is fixedly connected with the first movable seat, and an output rotating shaft of the thigh side-sway drive is connected with the second movable seat; the axial direction of a rotating shaft driven by thigh swing is parallel to the first direction; the axial direction of a rotating shaft of the thigh side-sway drive is perpendicular to the first direction; the axial direction of the rotating shaft of the thigh rotation drive is perpendicular to the first direction and the axial direction of the rotating shaft of the thigh side-sway drive.

The invention belongs to the technical field of transformer substation small animal driving, and particularly discloses a comprehensive small animal driving device and method.The comprehensive small animal driving device comprises a device shell, a driving module, a power supply module, a detection module and a control module, and the detection module is arranged on the device shell and used for judging whether small animals invade or not based on infrared detection; the detection module is arranged on the device shell and sends a detection signal to the control module, and the driving module is arranged on the device shell, is connected with the control module and is used for driving invading small animals from multiple aspects of vision, hearing, smell and touch; the power supply module is arranged on the device shell, connected with the driving module, the detection module and the control module and used for supplying power to all the modules. According to the comprehensive driving device and method for the small animals, multiple driving modes are adopted for cooperative operation, the small animals are driven from multiple angles and multiple aspects, and therefore the reliability of driving operation is guaranteed.

The invention discloses a lower limb movement gait recognition method and system based on feature fusion, and belongs to the technical field of gait recognition. Comprising the following steps: acquiring a surface electromyogram signal and a motion inertia signal of a to-be-predicted object; carrying out feature extraction on the surface electromyogram signal and the motion inertia signal by utilizing wavelet transform, obtaining gait features and screening an optimal feature combination; and processing the optimal feature combination through the trained gait recognition model to obtain a gait recognition result. Complex multi-modal data can be effectively processed and analyzed, so that high-precision gait recognition and evaluation are realized; the problem that the accuracy of gait evaluation needs to be improved due to the fact that single signal processing is difficult to comprehensively reflect a complex gait dynamic process in the prior art is solved.

The invention relates to the technical field of infrared target detection, in particular to a light-weight real-time infrared target detection method and system for an unmanned ship, and the method comprises the steps: collecting infrared data through an infrared thermal imager carried by the unmanned ship, and carrying out the preprocessing, marking and dividing. And a lightweight GLAF-MobileNetV4 network is adopted as a backbone of the detection method, so that the real-time performance is improved, and model parameters are greatly reduced. Wherein the lightweight global and local adaptive fusion attention can ingeniously integrate global and local information, and local information fusion is adjusted and optimized through dynamic weight. Meanwhile, the designed dynamic adaptive multi-scale feature fusion encoder adaptively adjusts the fusion proportion according to the importance of the multi-scale features by using an attention guidance mechanism. The method is simple and convenient to deploy, improves the target detection precision and real-time performance of the unmanned ship under the low-light condition, and is remarkable in detection efficiency.

The invention belongs to the technical field of transformer manufacturing, and discloses a shearing and stacking integrated lamination method for a large transformer iron core, which comprises the following steps: sequentially shearing and punching a roll material into silicon steel sheets according to the structure and specification of each layer of the iron core, sequentially conveying the silicon steel sheets formed by shearing and punching to a lamination station, and stacking the silicon steel sheets through translation, rotation and positioning operation in sequence. The invention further discloses a large transformer iron core shearing and stacking integrated lamination device which comprises a fixed door frame, at least two conveying assemblies located on the same straight line, a first lamination assembly, a rotation assembly, a second lamination assembly, a material stacking platform, a positioning assembly and a material pressing assembly. The stacking operation steps are simplified, manual operation links are reduced, the production efficiency and quality are improved, positioning of the positioning holes of the silicon steel sheets of different sheet types can be achieved, and the flexibility is good.

The invention provides an eddy current sensor, a detection device and an electric driving system, and the sensor comprises an eddy current rotor, one end of which is connected with a rotating shaft of a to-be-detected motor and rotates synchronously; one end of the printed circuit board assembly is an electromagnetic induction area, the exciting coil and the receiving coil are arranged in the electromagnetic induction area, the receiving coil is distributed on the inner side of the exciting coil, the other end of the eddy current rotor is close to the electromagnetic induction area to form a preset air gap distance, and the eddy current control module is arranged at the other end of the printed circuit board assembly. The eddy current control module is connected with the excitation coil to form a high-frequency oscillation magnetic field and is connected with the receiving coil to receive the induced electromotive force. The design is compact, the size is greatly reduced, light weight is achieved, and the installation space and the manufacturing cost are reduced.

An optical transceiver module and an optical cable module using the same are provided. The optical transceiver module: a substrate; at least one optical receiving device connected to the substrate; a plurality of optical transmitting devices connected to the substrate, wherein the optical transmitting devices comprise a plurality of first optical transmitting devices and a plurality of second optical transmitting devices, and the optical transmitting devices are misaligned to each other.

The invention discloses a double-guide-column plastic material forming machine. The die comprises a supporting base, a lower die base arranged on the supporting base, an upper die base capable of moving in a reciprocating mode relative to the lower die base, a driving supporting base arranged on the rear portion of the supporting base and a guiding supporting base vertically arranged on the driving supporting base, and a driving lead screw is arranged on the driving supporting base. Two guide rods parallel to the driving lead screw are arranged between the top of the guide supporting base and the supporting base, the upper die base is installed with the driving lead screw and the two guide rods in a matched mode, and a die pressing plate matched with the lower die base is fixedly installed on the upper die base. The mold pressing plate can reciprocate relative to the lower mold base through lifting of the upper mold base so as to press a blank. The device has the advantages that the action reliability and stability are good in the pressing process, and the pressing quality is greatly improved. And the parallelism of the guide rod and the screw rod is ensured, so that the pressing quality is greatly improved. The device is easy to manufacture, low in manufacturing cost, convenient to operate and use and high in use efficiency.

The invention discloses a motor with heat pipe integrated arc-shaped radiating fins, and relates to the technical field of motors. In order to solve the problems that in the long-time operation process of an existing motor, due to the fact that internal assemblies such as a winding and an iron core generate a large amount of heat, straight-strip-shaped or blade-shaped cooling fins are adopted, the cooling effect is poor, the motor is overheated, and then the driving efficiency of the motor is reduced. A plurality of arc-shaped heat dissipation fins are evenly arranged on the outer surface of a shell in the circumferential direction, each arc-shaped heat dissipation fin comprises a channel, an evaporation section and a condensation section, the condensation section is in an arc shape, the evaporation section and the condensation section are connected end to end, the channels are machined in the evaporation section and the condensation section in the length direction, the surface area is increased through the arc-shaped heat dissipation fins, and the heat dissipation efficiency is improved. The air flow path is optimized, the heat pipes are arranged in the channels in the arc-shaped heat dissipation fins, heat on the surface of the shell is better transmitted to the outer sides of the fins through the heat pipes, heat transmission is accelerated, and the temperature rise of the motor during working is effectively reduced. The invention is suitable for the field of motor heat dissipation.

The invention provides a wind turbine generator extreme wind condition load reduction optimization method and system, and the method comprises the steps: calculating a normal turbulent wind working condition, an extreme turbulent wind working condition and an extreme gust working condition of a wind turbine generator according to a load calculation standard of the wind turbine generator, and obtaining blade root limit load distribution results under different working conditions; according to a blade root limit load distribution result, a wind speed-blade root limit load threshold table is formulated, namely blade root limit load threshold conditions corresponding to different wind speeds are formulated, so that normal turbulent wind conditions and extreme wind conditions at specific wind speeds are distinguished; the control logic of the wind turbine generator under the extreme wind condition is optimized, that is, when the wind turbine generator is under the extreme wind condition, the actual measurement load value of the blade root is reduced by adding extra variable pitch actions; compared with the prior art, the blade root limit load under the extreme wind condition can be greatly reduced, and the safety of the wind turbine generator is improved.

The invention discloses a battery cell grouping structure, a battery pack and a vehicle, and belongs to the technical field of batteries. The battery cell grouping structure comprises: a battery cell group, which comprises a plurality of battery cells stacked in sequence; a heat insulation plate, wherein the heat insulation plate is arranged between two adjacent battery cells; the end plate is arranged at the end part of the battery cell group in the stacking direction, and one side, deviating from the battery cell group, of the end plate is used for abutting against a box body of the battery pack; the insulating plate covers the end face, provided with the pole columns, of the battery cell group, an FPC board, a plurality of bars and a plurality of temperature sensors are arranged on the insulating plate, the FPC board is connected with the multiple battery cells, the pole columns of every two adjacent battery cells are connected through the bars, and the temperature sensors are arranged in the circumferential direction of the insulating plate at intervals and connected with the corresponding battery cells. The end plate is arranged to be matched with the box body to clamp the battery cell group, and the FPC board, the chip and the temperature sensor are all integrated on the insulating plate, so that the safety is high, the assembly is simple and convenient, the occupied space is small, the lightweight design is met, the structure is simple, and the integration level is high.

The invention provides a main landing gear cabin door mechanism, an aircraft and a folding and unfolding method. The main undercarriage cabin door mechanism comprises a left cabin door and a right cabin door, one end of the left cabin door is provided with a first retractable driving mechanism, one end of the right cabin door is provided with a second retractable driving mechanism, and a small cabin door is hinged to the side, close to the right cabin door, of the left cabin door; the small cabin door and the left cabin door are provided with third folding and unfolding driving mechanisms which can respectively drive the small cabin door and the left cabin door to rotate; in the first position, the left cabin door and the right cabin door are both in a vertical state, and the small cabin door and the left cabin door are folded and overlapped; and at the second position, the left cabin door, the small cabin door and the right cabin door are horizontally positioned on the same plane. The small cabin door can be independently retracted and folded, after the cabin door is opened, the folded small cabin door can reduce the windward area of the cabin door in the put-down state, the pneumatic load borne by the cabin door is reduced, and the design of a driving mechanism for retracting and releasing the cabin door is lighter.

The invention relates to an electric drive axle and an electric truck. An electric drive axle is used for an electric truck, the electric drive axle is provided with a main drive motor, an auxiliary drive motor, a speed reducer assembly and a differential mechanism, the speed reducer assembly is provided with a gear shifting mechanism, a main drive first-stage speed reduction stage, an auxiliary drive first-stage speed reduction stage, a main drive second-stage speed reduction stage and an auxiliary drive second-stage speed reduction stage, the main drive secondary speed reduction stage and the auxiliary drive secondary speed reduction stage can be respectively connected with an output shaft of the speed reducer assembly through a gear shifting mechanism, the output shaft is directly connected with the differential mechanism, and the main drive secondary speed reduction stage comprises a main drive first-gear driving gear, a first-gear driven gear meshed with the main drive first-gear driving gear, a main drive second-gear driving gear and a second-gear driven gear meshed with the main drive second-gear driving gear. The auxiliary drive two-stage speed reduction stage comprises an auxiliary drive first-gear driving gear, a first-gear driven gear meshed with the auxiliary drive first-gear driving gear, an auxiliary drive second-gear driving gear and a second-gear driven gear meshed with the auxiliary drive second-gear driving gear. The electric truck according to the invention has an electrically driven axle.

The present invention relates to a transformer, which includes: an iron core, which includes a main column and a side column; a first winding, which is arranged on the main column; a second winding, which is arranged on the side column, wherein the second winding is connected in parallel with the first winding and is provided with an excitation current; and an inductor, which is arranged to form a series connection with the first winding, wherein the second winding and the first winding are connected so that a circulating current generated between the first winding and the second winding flows only through the first winding when entering the series connection formed by the inductor and the first winding.

The invention discloses a dTOF laser radar-based berth detection system and method, and relates to the technical field of intelligent transportation, and the system comprises an image collection module which is used for collecting a berth image through a camera; the data processing module is used for preprocessing the parking space image and analyzing image data through an image recognition algorithm; the berth detection module is used for detecting the berth state through the dTOF laser radar; and the GPS positioning module is used for determining the real-time position of the inspection equipment. According to the technical scheme of the invention, the method can achieve the recognition of the temporarily-parked vehicle near the parking space, avoids the wrong charging of the temporarily-parked vehicle through the inspection equipment, and is higher in application value.

The invention relates to the field of flow control, in particular to an integrated full-scale high-precision flow controller and a flow measurement and control method. The integrated full-range high-precision flow controller comprises a fluid conveying flow path, a control valve and a main control chip, the fluid conveying flow path is provided with at least two flow measuring parts which are different in measuring range and connected in parallel, and each flow measuring part comprises a sensor and a flow resistance structure which are used in cooperation. A measuring part switching assembly is arranged at an inlet of the branch flow path where each flow measuring part is located; the control valve is installed on the fluid conveying flow path and connected with the measuring part switching assembly in series. The main control chip is connected with the flow measuring part, the measuring part switching assembly and the control valve. The flow can be accurately measured, so that the flow is accurately controlled, the requirement of customers for high precision of small-flow process gas is met, full-scale high-precision flow control is met, the integration degree is high, and the structure is compact.

The invention relates to the technical field of activated carbon production equipment, and discloses an activated carbon manufacturing raw material crushing and screening device which comprises a machine body serving as a supporting carrier of the whole device. The crushing box is mounted on one side of the top of the machine body; the crushing assembly is mounted in the crushing box and is used for crushing the activated carbon raw material; the efficient grinding assembly is mounted on the inner side of the machine body and used for further grinding the activated carbon raw materials; and the anti-blocking assembly is installed at the joint of the machine body and the smashing box, and it is guaranteed that the smashed raw materials can enter the machine body. Through the efficient grinding assembly and efficient grinding, the size of crushed particles can be better controlled, the particles are more uniform, follow-up screening of the activated carbon is facilitated, the screening effect and precision can be improved, it is guaranteed that raw material particles are small, and the small raw material particles guarantee formation of a pore structure and increase of the surface area of the activated carbon; therefore, the adsorption capacity of a final product is improved, and the overall quality and performance of activated carbon are improved.

The invention discloses an insulating pull rod lightweight design method based on a multi-objective optimization algorithm, and aims to solve the problems of heavy weight and heavy workload of a bearing tool in hot-line work of an ultra-high voltage transmission line. The method comprises the following steps: setting electrical and mechanical property parameters of the insulating pull rod; then, a three-dimensional model is built through SolidWorks, and finite element analysis is carried out through COMSOL; then, an optimized data set is obtained through joint simulation of MATLAB, COMSOL and SolidWorks; secondly, establishing a mathematical optimization model, solving by adopting a particle swarm-grey wolf optimization algorithm, and improving the algorithm through Sine-Tent-Cosine chaotic mapping population initialization and a crisscross strategy; and finally performing simulation verification on the optimization scheme. The device is applied to the lightweight design of large-load insulating force-bearing tools, effectively shortens the development period of the tools, saves the production cost, improves the safety coefficient of hot-line work, and remarkably reduces the workload of hot-line workers.

The invention relates to the technical field of elevator speed limiting protection devices, and discloses an anti-falling protection brake motor which is characterized in that an outer spline sleeve (5) is mounted on a rotating shaft behind a motor rotor (3), an inner spline sleeve (9) is sleeved on the outer spline sleeve (5), flail block seats (4) are uniformly distributed on the inner spline sleeve (9), the flail block seats (4) are in sliding fit with flail blocks (10), the flail blocks (10) are tightly pressed on the inner spline sleeve (9) through tension springs (12) surrounding flail block arc grooves (13), and the inner spline sleeve (9) is sleeved with the inner spline sleeve (9). A friction plate (11) is fixed on the flail block (10); a friction shell (8) is fixedly arranged on the motor rear end cover (7), a gap is formed between the friction plate (11) and the inner wall of the friction shell (8), and self-adaptive safety protection is formed. Two linkage devices are arranged on the friction shell (8) in an axial symmetry mode, a pressure plate (15) is arranged on the flail block (10), and linkage type safety protection is formed. The device is low in manufacturing cost, and drives a load to fall safely in a dynamic balance mode.

The invention relates to the field of information investigation and electronic countermeasure, in particular to a multi-element antenna array and a related system.The antenna array comprises a plurality of antenna array elements, a polygonal cylinder base, an antenna cover and a fixed bottom plate, and the input ends of the antenna array elements are connected with a radio frequency connector; the related system comprises an antenna array, a power supply and communication control module and a radio frequency module. The antenna array is used for solving the technical problems that an existing antenna array is narrow in frequency domain coverage, not wide enough in space domain coverage, large in weight and size and not integrated with the ultra-wideband azimuth direction finding function and the electronic interference function. According to the antenna array, the frequency coverage is 2-18 GHz, the airspace coverage is 360 degrees, the lightweight design is realized, and the antenna array integrates the functions of omnibearing direction finding and electronic interference; spatial multipath investigation signals are received to carry out combined amplitude comparison direction finding, characteristics and threat levels of the investigation signals are calculated and confirmed through an algorithm, and then investigation tracking and electronic interference tasks are carried out on a threat target in a specified direction according to the orientation of the threat target.

The invention discloses manual control type multi-degree-of-freedom operating forceps, and relates to the technical field of surgical operating instruments. In order to solve the problems that an existing minimally invasive surgical operating instrument is numerous and jumbled in structure and lacks a degree-of-freedom locking structure, and opening and closing of a forceps head are easily interfered by pitching and deflection of a handle, the following technical scheme is provided: the minimally invasive surgical operating instrument comprises the handle, a shell, an actuating part, a connecting rod, a transmission wire and the forceps head, and a locking part is arranged close to the front end of the handle; the action of the operating forceps in the corresponding degree-of-freedom direction is locked or unlocked; a transmission part is arranged in the shell, an arch-shaped arm is arranged at the tail end of the shell, the arch-shaped end of the arch-shaped arm is arranged around the top of the shell, the front end of the arch-shaped arm is connected with a connecting rod, and a tong head is arranged at the front end of the connecting rod. The transmission wire is arranged in the arch-shaped arm, and the transmission part transmits the action of the actuating part to the tong head through the transmission wire. According to the operating forceps, the accuracy of operation of the operating forceps is improved, the visual effect of operation control is improved, and the operation of controlling and locking / unlocking the forceps heads is simple and convenient.

The utility model provides a wind resistance balancing wing plate, which belongs to the technical field of balancing wing plates, and comprises a wing plate main body, the wing plate main body is divided into a front edge, a wing-shaped middle part and a rear edge along the spanwise direction, the wing plate main body is provided with a sawtooth structure, the sawtooth structure is continuously arranged triangular sawteeth, and the triangular sawteeth are arranged in the wing plate main body. The sawtooth structures are integrated on the edge of the wing plate body to form an integrated structure, the vertex of each sawtooth is located on the edge line of the wing plate body, gears of the sawtooth structures are arranged in a staggered mode, and the sawtooth structures are continuously distributed along at least one side edge of the wing plate body. The sawtooth structures are continuously distributed along the edge of at least one side of the wing plate body, preferably distributed on the edges of the two sides, so that the airflow optimization effect is maximized, turbulent flow of a traditional wind resistance balance wing plate is reduced, the smoothness of airflow is improved, and therefore wind resistance is reduced, and stability and efficiency are enhanced.

The utility model discloses a wet-process phosphoric acid purification and arsenic removal system, and relates to the technical field of wet-process phosphoric acid purification and impurity removal. The system comprises a phosphoric acid raw material tank, a Venturi jet reactor, a tubular washing absorber, a reaction washing curing tank and a hydrogen sulfide reactor which are sequentially connected, wherein the hydrogen sulfide reactor is also communicated with the Venturi jet reactor; the reaction washing and curing tank is communicated with an arsenic removal filtering assembly; and the arsenic removal filtering assembly is communicated with the phosphoric acid raw material tank. The problems that an existing arsenic removal system is large in sodium sulfide adding amount, hydrogen sulfide leakage is prone to occurring, the system is complex, and the arsenic index is difficult to control flexibly are solved.

The invention discloses an integrated valve type vacuum pump, a breast pump main machine and a breast pump, and relates to the technical field of vacuumizing devices.The integrated valve type vacuum pump comprises an air exhaust assembly, a driving motor, a shell and a rotating shaft, an air cavity is formed in the shell, and the shell is provided with an air leakage channel and a connecting channel communicated with the breast pump; the integrated valve type vacuum pump further comprises a linkage arm, a linkage piece and a sealing piece. The linkage arm is rotationally connected with the rotating shaft, and the linkage arm is coupled with the linkage piece; and when the driving motor works, the rotating shaft is driven to rotate to drive at least one part of the linkage arm to move away from the rotating shaft or have the trend of moving away from the rotating shaft, so that the linkage piece is driven to move in the axial direction of the rotating shaft, and the sealing piece is driven to seal the air leakage channel. According to the technical scheme provided by the invention, the problem that the volume size of the breast pump is limited by the vacuum air exhaust assembly and the air release valve can be solved.

The utility model discloses a sounding monomer, a sounding module and an electronic device, and relates to the technical field of electroacoustic transduction, the sounding monomer comprises a magnetic circuit system, a vibration system and a support member, the vibration system comprises a first vibration assembly and a second vibration assembly which are arranged at the same side of the magnetic circuit system and vibrate along a first direction, the supporting piece is arranged on a first edge magnetic part of the magnetic circuit system, a body part of the supporting piece comprises a first supporting part and a second supporting part which is connected to the end, away from the magnetic circuit system, of the first supporting part and extends in the second direction, and the second supporting part comprises an upper surface and a lower surface which are distributed in the first direction. One of the inner peripheral side of the first diaphragm assembly and the outer peripheral side of the second diaphragm assembly is connected to the upper surface, and the other one is connected to the lower surface. The sound production single body can realize light and thin design, occupies a small assembly space, can realize the function of a loudspeaker with vibrating diaphragms arranged on two sides, and is ingenious and practical in structural design.

The invention discloses a hand bionic nerve high-density array type flexible electrode for tactile feedback, belongs to the field of electrical stimulation, and aims to solve the problems of an existing tactile feedback system. The sensor comprises a flexible bottom layer and a high-density electrode matrix, wherein the high-density electrode matrix is prepared on the flexible bottom layer; the flexible bottom layer is in a hand-imitating shape and is divided into a palm area and a finger area. The high-density electrode matrix comprises a plurality of electrode net units, the plurality of electrode net units are distributed in a palm area and a finger area, and local electrical stimulation on different areas is realized by performing current control on the different areas.

The invention belongs to the field of plastic flowerpots, and discloses a water-controlled automatic rotating plastic flowerpot which comprises a flowerpot body, a placement pot movably arranged on the inner wall of the flowerpot body, an adjusting device movably arranged on the inner wall of the flowerpot body, a rotating device movably arranged on the inner wall of the adjusting device, and a transmission device fixedly arranged on one side of the upper portion of the adjusting device. A water supplementing device is fixedly arranged on one side of the inner wall of the flowerpot, one side of the transmission device is in gear adaptive connection with one side of the water supplementing device, and a water inlet is formed in one side of the flowerpot; the flowerpot solves the problems that in the prior art, a traditional flowerpot needs to be manually operated during watering, precise control is difficult to achieve, light receiving is uneven due to the fact that plants cannot automatically rotate in the growth process, and the overall growth situation of the plants is affected, and is suitable for flowerpots.

The invention relates to the technical field of scanners, and discloses an ultra-short-focus scanning optical system which sequentially comprises a light-emitting unit, a diaphragm, a DOE lens, a rotating mirror, an F-theta lens and a selenium drum from an object plane to an image plane. The light-emitting unit emits an elliptical laser beam; the diaphragm is used for calibrating the elliptical laser beam into a diaphragm-shaped light beam; the first lens surface of the DOE lens collimates the diaphragm-shaped light beam into a parallel light beam; the second lens surface shapes the parallel light beams into linear light beams along the y-axis direction; the rotating mirror receives and changes the angle of the linear beam; the F-theta lens receives the linear light beams passing through the rotating mirror and converges the linear light beams into a circular light spot within a diffraction limit; the selenium drum converts the circular light spot focused by the F-theta lens into a printable image; by improving the curved surface type of the F-theta lens, light spots printed on the selenium drum are in central symmetry, the uniformity of the light spots in the scanning process can be improved, and the scanner is miniaturized.

The invention relates to the technical field of metal surface treatment, in particular to a laser scraping process applied to a metal surface, which is characterized in that a laser beam is emitted by a laser head of a laser system to act on the metal surface to be treated and is used for simultaneously cleaning and texturing the metal surface; the laser device for realizing the process is simple in structure, can be designed in a miniaturized manner, is better in applicability, and has more obvious advantages especially in complex application scenes such as bridge steel structures; before metal welding, welding while cleaning can be realized by using the laser scraping process, so that the construction efficiency is greatly improved, especially in bridge welding operation needing quick response and high precision; before the metal is painted, the laser scraping process is used, so that not only can anti-corrosion paint and a corrosion layer on the surface be thoroughly removed, but also uniform roughness can be formed on the surface, and an ideal base material strip is provided for coating.