baber/WOPTO huggingface dataset:
Patent WO-2021093301-A1 (WO)
Title: Energy recycling device
Inventor: HE QINGHUA
IPC: F15B21/14
Filed: 2020-05-21
Abstract: An energy recycling device, comprising a three-position seven-way reversing valve (7), a dual-oil source coupler (8), and an energy accumulator (6). The three-position seven-way reversing valve (7) comprises a middle position, an energy release position, and an energy recycling position, and an oil inlet, an oil return port, two working oil ports, and three energy saving oil ports are formed at each position; the oil inlet, the oil return port, and the two working oil ports are respectively communicated with two oil ports of a movable arm oil cylinder (2) and oil inlet and outlet paths of a hydraulic system; one energy saving oil port is connected to the energy accumulator (6), and the other two energy saving oil ports are connected to the dual-oil source coupler (8) in a convergent manner; the dual-oil source coupler (8) is connected in parallel to one oil port of the movable arm oil cylinder (2). According to the energy recycling device, oil inlet and outlet paths of the movable arm oil cylinder (2) of an external potential device are changed by means of the three-position seven-way reversing valve (7), the potential of the external potential device is efficiently recycled in a regenerated energy recycling manner of differential communication of two oil cavities of the movable arm oil cylinder (2), and the working reliability of the device is guaranteed.
Patent WO-2021212590-A1 (WO)
Inventor: LIU XIPING
IPC: E01D19/06
Filed: 2020-05-25
Abstract: A bridge expansion joint structure. The expansion joint is provided with an expansion device (1); the expansion device (1) comprises a cover plate (2) and section steel; the section steel comprises left section steel (31) and right section steel (32) provided on two sides of the expansion joint; the cover plate (2) is detachably connected to the section steel; the cover plate (2) comprises an upper cover plate (21) and a lower cover plate (22); the left section steel (31) and the right section steel (32) are respectively provided with a plurality of first shackles (311) and second shackles (321) arranged at equal intervals; the lower cover plate (22) is provided with a plurality of first hooks (221) and second hooks (222) corresponding to the first shackles (311) and the second shackles (321), respectively; the first hooks (221) and the second hooks (222) are respectively slidably connected to the lower cover plate (22); and a plurality of compression springs (4) are provided under the cover plate (2).
Patent WO-2020244428-A1 (WO)
Title: Industrial parallel water inlet single-stage disc water filter
Inventor: MAO SINING
IPC: C02F1/44
Filed: 2020-05-26
Abstract: An industrial parallel water inlet single-stage disc water filter, relating to the technical field of water treatment, and comprising an outer cylinder (1). The filter core (2) comprises an upper flow guide disc (14), a flow guide disc (16), and a lower flow guide disc (15) provided from top to bottom. Filter membranes (17) are provided on the lower surface of the upper flow guide disc (14), the upper surface of the lower flow guide disc (15), and the surface of the flow guide disc (16). A raw water inlet (8), a pure water outlet (9), and a wastewater outlet (10) are provided on a lower end of the outer cylinder (1). The beneficial effects are that the filtration is more adequate by optimizing a filtering device and the flow direction of water, and the wastewater utilization rate and the purity of the filtered water are improved. At the same time, the requirement of the water inlet pressure is reduced, and the service life of the filter core (2) is effectively prolonged.
Patent WO-2021232455-A1 (WO)
Title: Driving stabilizing system, backhoe-loader and control method
Inventor: ZHAO BIN
IPC: E02F9/22
Filed: 2020-05-27
Abstract: The present disclosure relates to a driving stabilizing system, a backhoe-loader and a control method. The driving stabilizing system comprises a hydraulic actuator (1); a first hydraulic oil source (B) operably connected to the hydraulic actuator (1) and configured to provide pressure oil for the hydraulic actuator (1); an energy storage element (A) operably connected to a first oil supply passage (r1) between the first hydraulic oil source (B) and the hydraulic actuator (1); and a controller (E) configured to compare the oil pressure of the hydraulic actuator (1) and the oil pressure of the energy storage element (A) after the driving stabilizing system is started, and to balance the oil pressure of the energy storage element (A) and the oil pressure of the hydraulic actuator (1) before the energy storage element (A) is connected to the first oil supply passage (r1).
Patent WO-2020238952-A1 (WO)
Inventor: SONG WEI
IPC: H01L27/32
Filed: 2020-05-27
Abstract: A light emitting device, comprising: an anode disposed at a side of a substrate; and a cathode disposed at a side of the anode facing away from the substrate. The anode comprises a light reflecting sub-electrode and a light transmitting sub-electrode located on a side surface of the light reflecting sub-electrode facing away from the substrate. An orthographic projection of the light transmitting sub-electrode on the substrate is within the range of an orthographic projection of the light reflecting sub-electrode on the substrate. The light reflecting sub-electrode comprises a metal pattern and a metal oxide pattern, and the metal oxide pattern is located in at least part of a region around the metal pattern.
Patent WO-2021237660-A1 (WO)
Title: Indoor navigation
Inventor: TENG XIAOQIANG
IPC: G01P21/00
Filed: 2020-05-29
Abstract: A new approach for determining a movement orientation of a user is proposed in indoor navigation. The approach involves: obtaining a device orientation of a terminal device based on at least one signal stream collected from the terminal device carried by a moving user (1110); determining a deviation degree based on the at least one signal stream, wherein the deviation degree represents a deviation between a movement orientation of the user and an actual device orientation of the terminal device (1120); determining the movement orientation based on the device orientation in accordance with a determination that the deviation degree is below a threshold degree (1130). With the approach, the movement orientation of the user is determined in a more effective an accurate way, and thus accuracy of the indoor navigation is increased.
Patent WO-2021073124-A1 (WO)
Title: 一种用于货物输送的链条式螺旋提升机
Inventor: SHANG JITONG
IPC: B65G35/00
Filed: 2020-06-02
Abstract: 一种用于货物输送的链条式螺旋提升机，包括支架组件（1），支架组件（1）上连接有螺旋体（2），螺旋体（2）以支架组件（1）的中心支架（11）为中心轴呈180度螺旋上升设置，螺旋体（2）的最低处设置被动滚筒（3），螺旋体（2）的最高处设置主动滚筒（4），且主动滚筒（4）还连接有驱动电机（5），同时在主动滚筒（4）和被动滚筒（5）之间还环绕设置输送皮带（6），在驱动电机（5）的作用下，主动滚筒（5）能通过输送皮带（6）带动被动滚筒（5）发生旋转。该技术方案降低生产成本的同时，提高了生产安装的效率，同时采用一个驱动电机的设计，节约了电力，保证了运行过程的稳定。
Patent WO-2021051891-A1 (WO)
Inventor: NIE ZIHENG
IPC: A61N5/10
Filed: 2020-06-04
Abstract: 一种防碰撞装置（300）及放疗设备（1000）。该防碰撞装置（300），包括防碰撞罩（20）和检测部（30）。该检测部（30）沿该防碰撞罩（20）的轴线方向设置于该防碰撞罩（20）的底端的外侧，且该检测部（30）与该防碰撞罩（20）之间具有轴向间隙。该检测部（30）配置为采集触发信号，并根据该触发信号输出碰撞信号；该触发信号包括在该轴向间隙减小至目标值的情况下产生的机械式触发信号或电磁式触发信号。
Patent WO-2021147228-A1 (WO)
Inventor: YANG CHEN
IPC: G06F3/044
Filed: 2020-06-10
Abstract: 一种图像扫描装置及图像扫描方法。图像扫描装置包括：显示器，当物体接触所述显示器时，所述显示器分别发出红光、绿光及蓝光以曝光所述物体；传感器，设置于所述显示器下方，所述传感器获得对应所述红光的第一图像、对应所述绿光的第二图像及对应所述蓝光的第三图像；以及处理模块，耦接到所述传感器及所述显示器，所述处理模块根据所述第一图像、所述第二图像及所述第三图像产生对应所述物体的物体图像。
Patent WO-2022000342-A1 (WO)
Inventor: ZHANG XIANG
IPC: H01M50/531
Filed: 2020-06-30
Abstract: A pole piece, comprising a pole piece main body, a tab, a first glue layer and a second glue layer. The tab comprises a connection portion and an extension portion connected to the connection portion; the connection portion overlaps with and is connected to the pole piece main body; the extension portion protrudes from a side of the pole piece main body in a first direction from the connection portion; the first glue layer is disposed on the extension portion; the second glue layer comprises a first portion and a second portion; the first portion is bonded to a surface of the pole piece main body and covers the connection portion; the second portion extends in a first direction from one side of the first portion that is near the first glue layer and bonds to the first glue layer; and in a second direction perpendicular to the first direction, the width of the second portion is less than the width of the first portion, thereby improving the reliability and safety of the pole piece. Further provided in the present application are an electrode assembly and a battery which use the pole piece.
Patent WO-2021012915-A1 (WO)
Title: 无通信海上风电场经柔性直流系统并网的有功频率控制方法及系统
Inventor: YANG YUEXI
IPC: H02J3/48
Filed: 2020-07-01
Abstract: 本文公开了一种无通信海上风电场经柔性直流系统并网的有功频率控制方法及系统。岸上换流站获取岸上交流电网的接入点的第一频率信号；岸上换流站根据第一频率信号生成直流电压参考值；岸上换流站根据生成的直流电压参考值控制岸上换流站的输出直流电压值等于直流电压参考值；海上换流站检测海上换流站的直流侧的直流电压值，将海上换流站的直流侧的直流电压值转化为频率，得到第二频率参考值；在海上换流站控制海上公共耦合点的频率等于第二频率参考值的情况下，海上风电场获取海上电网的第三频率信号；海上风电场基于初始的频率参考值及第三频率信号对海上风电进行有功频率调制。
Patent WO-2021128789-A1 (WO)
Title: 一种阻力装置
Inventor: CHEN GANG
IPC: A63B21/005
Filed: 2020-07-01
Abstract: 本发明公开了一种阻力装置，包括：阻力源、绞盘、拉绳、滑轮组、理线机构、拉线及固定板；所述阻力源的输出端与绞盘一端连接，所述绞盘另一端枢设于固定板，所述固定板与阻力源之间设有所述理线机构，所述拉绳的一端固设于绞盘上，所述拉绳的另一端凸伸出理线机构，所述绞盘另一端的端部凸设有绕线柱，所述滑轮组包括至少一定滑轮及至少一动滑轮，所述定滑轮固设于固定板上，所述动滑轮固设于理线机构上，所述拉线的一端固设于绕线柱上，所述拉线缠绕于绕线柱、定滑轮与动滑轮之间，所述拉绳与理线机构连动，本发明结构简单、减小拉绳阻力、减少制造成本、降低制造精度要求及保证拉绳有序卷绕。
Patent WO-2021227220-A1 (WO)
Title: Method for improving through-current capability of zinc oxide varistor by regulating morphology of bismuth oxide crystals, zinc oxide resistor sheet, and preparation method therefor
Inventor: LU JIAZHENG
IPC: H01C7/12
Filed: 2020-07-03
Abstract: A method for improving the through-current capability of a zinc oxide varistor by regulating the morphology of bismuth oxide crystals, a zinc oxide resistor sheet, and a preparation method therefor. By optimizing the raw material formulation, the cooling rate during sintering and the heat treatment temperature after sintering, and the heating/cooling rate of the zinc oxide resistor sheet, the regulation of the morphology of the bismuth oxide crystal in the zinc oxide resistor sheet is achieved, the proportions of the two structures of β-Bi  2 O  3  and δ-Bi  2 O  3  in the bismuth oxide crystals are reduced, and the proportions of the two crystal structures of α-Bi  2 O  3  and γ-Bi  2 O  3  in the bismuth oxide crystals are increased, such that the uniformity of the microscopic grain boundary structure of the zinc oxide resistor sheet is effectively improved, and the gap in a grain boundary layer is reduced, such that the crystal structure distribution is more uniform, which further improves the through-current capacity of the resistor sheet. After the electrical performance test, the zinc oxide resistor sheet prepared by using the method is more stable under the action of an impact current compared with traditional zinc oxide resistor sheets.
Patent WO-2021184595-A1 (WO)
Title: Devices, systems, and methods for treating ethylene oxide waste gas
Inventor: HE YECHENG
IPC: B01D53/047
Filed: 2020-07-03
Abstract: A system (10) for treating an ethylene oxide waste gas comprises a first pressure swing adsorption tower (110), a first thermostatic assembly (120), a gas storage tank (130), a first branch pipe (141), and a second branch pipe (142). The first pressure swing adsorption tower (110) comprises a first accommodating chamber (111c) which accommodates an adsorption material (114c). A first vent port (111a) and a first exhaust port (111b) are in communication with the first accommodating chamber (111c). The first pressure swing adsorption tower (110) is partially disposed in the first thermostatic assembly (120). The gas storage tank (130) comprises a gas inlet/outlet port (131). The first branch pipe (141) and the second branch pipe (142) are in communication with the first vent port (111a). The first branch pipe (141) couples the first vent port (111a) with the gas inlet/outlet port (131) and the second branch pipe (142) introduces an ethylene oxide waste gas into the first pressure swing adsorption tower (110).
Patent WO-2021031753-A1 (WO)
Inventor: YIN HUI
IPC: H01S5/042
Filed: 2020-07-16
Abstract: 一种用于发光模块（220）的安全充电电路（210）、保护方法以及激光雷达发射系统。发光模块（220）包括发光器件支路和蓄电元件，安全充电电路（210）包括：安全保护模块（230），被配置为检测发光模块（220）中的蓄电元件两端的电压，并且在确定电压下降到低于下降到低于预设阈值电压时生成第一控制信号；以及第一开关，被配置为根据第一控制信号而导通，形成对发光模块（220）中的蓄电元件的放电回路。实现了持续高电压驱动发光模块（220）的同时，提供对人眼或皮肤安全的保护。
Patent WO-2022021008-A1 (WO)
Inventor: ZHAO ZHENSHAN
IPC: H04W72/04
Filed: 2020-07-27
Abstract: Embodiments of the present application provides a method and a terminal device for determining a sidelink configured grant source. When sidelink transmission needs to be performed, a terminal device can accurately determine a time domain resource corresponding to a Sidelink Configured Grant (SL CG). The method for determining the SL CG source comprises: the terminal device determines a time domain resource of a first SL CG according to first information, wherein the first information comprises at least one of the following: the number of time slots corresponding to periods of the first SL CG in a resource pool associated with the first SL CG; an average number of logical slots used for sidelink transmission in one radio frame; SFN information within time ranges of double SFNs; logical time slot information within the time ranges of the double SFNs; a time domain offset within the time ranges of the double SFNs; and an offset value of a target sidelink transmission resource in the first SL CG and a first sidelink transmission resource in the time domain.
Patent WO-2021032188-A1 (WO)
Title: Method for configuring relay threshold of terminal, method for controlling relay service, and device
Inventor: KIMBA DIT ADAMOU BOUBACAR
IPC: H04W40/08
Filed: 2020-08-21
Abstract: Provided are a method for configuring a relay threshold of a terminal, a method for controlling a relay service, and a device. The method comprises: sending configuration information to a UE, wherein the configuration information is used for configuring a threshold parameter, for providing a relay service, of the UE.
Patent WO-2021088481-A1 (WO)
Inventor: ZUO CHAO
IPC: G06T7/33
Filed: 2020-08-27
Abstract: Disclosed is a high-precision dynamic real-time 360-degree omnibearing point cloud acquisition method based on stripe projection. The method comprises: firstly, by means of the fringe projection technology based on a stereoscopic phase unwrapping method, and with the assistance of an adaptive dynamic depth constraint mechanism, acquiring high-precision three-dimensional data of an object in real time without needing any additional auxiliary fringe pattern; and then, after a two-dimensional matching point optimized by means of corresponding three-dimensional information is rapidly acquired, by means of a two-thread parallel mechanism, carrying out coarse registration based on simultaneous localization and mapping (SLAM) technology and fine registration based on iterative closest point (ICP) technology. By means of the invention, low-cost, high-speed, high-precision, unconstrained and rapid-feedback omnibearing three-dimensional real-time modeling becomes possible, and a new gate is opened into the fields of 360-degree workpiece three-dimensional surface defect detection, rapid reverse forming, etc.
Patent WO-2021037134-A1 (WO)
Title: Lung adenocarcinoma molecular typing and survival risk factor gene cluster, diagnostic product, and application
Inventor: ZHOU TONG
IPC: C12Q1/6886
Filed: 2020-08-27
Abstract: Disclosed are a gene cluster which can evaluate lung adenocarcinoma molecular typing and survival risk, and an application of a reagent, which detects the gene expression level of the gene cluster, in preparing a product, the product being used for determining lung adenocarcinoma molecular typing and evaluating lung adenocarcinoma patient survival risk, the product comprising a next-generation sequencing (NGS) detection reagent kit, a fluorescence quantitative PCR detection reagent kit, a gene chip and a protein microarray. Also disclosed is a method which uses the detection reagent kits to evaluate lung adenocarcinoma molecular typing and survival risk.
Patent WO-2021047484-A1 (WO)
Title: Text recognition method and terminal device
Inventor: LI YUE
IPC: G06V10/82
Filed: 2020-09-07
Abstract: A text recognition method, comprising: performing feature extraction on an image to be recognised to acquire a first feature map; processing the first feature map to at least acquire N first candidate vector detection frames, each first candidate vector detection frame being configured to frame a text vector area; filtering the N first candidate vector detection frames to acquire K first target vector detection frames; performing feature extraction on the first feature map to acquire a second feature map; processing the second feature map to acquire L first candidate text detection frames, each first candidate text detection frame being configured to frame an area containing text; on the basis of the K first target vector detection frames, filtering the L first candidate text detection frames to acquire J first target text detection frames; and recognising the text in the J first target text detection frames to acquire J items of target text information.
Patent WO-2021077986-A1 (WO)
Inventor: PENG FEN
IPC: B01D53/06
Filed: 2020-09-25
Abstract: 本发明公开了一种吸附材料脱附再生系统，包括一体连接的脱附段箱体和净化段箱体，所述脱附段箱体和净化段箱体之间通过净化段箱体入口和净化段箱体出口实现气流循环连通；所述脱附段箱体内部在净化段箱体入口和净化段箱体出口之间的通道内填装待脱附的吸附材料；所述净化段箱体设有换热器以及相互连通设置的催化燃烧区和加热区，形成脱附气体和催化燃烧高温气体之间的余热利用循环通路。本发明采用一体机设计，结构紧凑、净化效率高、能耗低、运行成本低，可广泛应用于各种吸附设备及吸附材料的脱附及净化，设备维护方便快捷，具有广泛的应用价值。
Patent WO-2021063322-A1 (WO)
Title: Display device, gate driver circuit, shift register circuit, and driving method therefor
Inventor: FENG XUEHUAN
IPC: G11C19/28
Filed: 2020-09-28
Abstract: A shift register circuit (RS), comprising an input sub-circuit (10), an output sub-circuit (20), a first control sub-circuit (30) and a second control sub-circuit (40). The input sub-circuit (10) is connected to a first signal input terminal (IN1), a second signal input terminal (IN2) and a first node (N1); the output sub-circuit (20) is connected to the first node (N1), a first clock signal terminal (CLKD) and a first output terminal (O1); the first control sub-circuit (30) is connected to a first power supply voltage terminal (VDD1), a second power supply voltage terminal (VDD2), the first node (N1) and a second node (N2); and the second control sub-circuit (40) is connected to the second power supply voltage terminal (VDD2), a third power supply voltage terminal (VDD3), the second node (N2) and a third node (N3), the third node (N3) also being connected to the input sub-circuit (10).
Patent WO-2021143239-A1 (WO)
Title: Routing control method and apparatus, electronic device, and storage medium
Inventor: WANG LEI
IPC: H04L45/74
Filed: 2020-10-20
Abstract: A routing control method, comprising: receiving a routing query request sent by a forwarding node, the routing query request being generated by the forwarding node according to an access request for a target node; obtaining path information of a forwarding path according to state information of each forwarding node in a cloud acceleration network; and sending the path information to the forwarding node, such that the forwarding node forwards the access request to the target node according to the path information.
Patent WO-2021139308-A1 (WO)
Inventor: HU JUNWEN
IPC: G06F21/57
Filed: 2020-10-21
Abstract: 本申请涉及人工智能领域，公开了一种云服务器监控方法、装置、设备及存储介质。云服务器监控方法包括：检测当前是否存在云服务器定时监控任务；若存在，则根据预置硬件可信完整性校验策略和/或软件可信完整性校验策略，得到对应的硬件环境监控值和/或软件环境监控值，并分别判断其与硬件环境基准值和/或软件环境基准值是否一致，若不一致，则判断当前云服务器是否满足预置告警条件；若满足告警条件，则生成硬件可信报告和/或软件可信报告并发送至对应用户。本方案可实现用户对云服务器的安全性监控，以保障在云服务器上数据的安全性。此外，本申请还涉及区块链技术，硬件环境基准值和/或软件环境基准值可存储于区块链中。
Patent WO-2021169336-A1 (WO)
Inventor: LI SHUCAI
IPC: G06F30/20
Filed: 2020-10-22
Abstract: Disclosed are a near-field dynamics method and system for simulating a sudden inrush water disaster of tunnel rock mass failure, which solve the problems of existing methods in which describing progressive failure features of rock mass under the action of excavation and unloading is difficult and an evolution mechanism of an inrush water channel cannot be revealed, and can effectively describe the formation process of the rock mass failure inrush water channel and a surrounding rock damage and failure mechanism. The technical solution is: discretizing a computing model as matter points, and configuring a virtual boundary layer on an outer side of a boundary of the computing model as an object implemented by a boundary condition; selecting a neighborhood size of the matter points to form a neighborhood matrix of the matter points; enabling the crustal stress to be equivalent to a stress boundary condition of the computing model and karst water pressure to be equivalent to normal pressure, and converting a displacement constraint and a tunnel support into a displacement boundary condition; solving the velocity and displacement of the matter points, determining whether the bonds of all of the matter points satisfy a failure condition, and recording the local damage condition; and after an initial equilibrium calculation is stabilized, using a material point dormancy method to simulate a tunnel construction process.
Patent WO-2021083063-A1 (WO)
Title: 电子设备、无线通信方法和计算机可读存储介质
Inventor: CUI TAO
IPC: G01C21/34
Filed: 2020-10-26
Abstract: 本公开涉及电子设备、无线通信方法和计算机可读存储介质。根据本公开的用于车辆的电子设备，包括处理电路，被配置为：确定所述车辆的载重信息；生成车辆信息，所述车辆信息包括所述车辆的载重信息；以及将所述车辆信息发送至服务器，以用于所述服务器根据所述车辆信息确定用于所述车辆的道路规划信息。使用根据本公开的电子设备、无线通信方法和计算机可读存储介质，可以在道路规划和决策规划时考虑车辆的载重信息，由此更好地管理车辆的载重，并且更合理地进行道路规划。
Patent WO-2021098485-A1 (WO)
Title: PCIe设备的上下电控制方法以及系统
Inventor: WANG LIUFEI
IPC: G06F1/26
Filed: 2020-10-30
Abstract: 一种PCIe设备的上下电控制方法及系统，所述方法包括：逻辑模块接收来自CPU的操作指令（S202），操作指令包括携带有目标设备信息的上电指令或者下电指令；根据所述操作指令，模拟所述目标设备的在位状态（S203）；根据模拟的目标设备在位状态，使能控制所述目标设备的时钟和复位信号（S204）；根据来自逻辑模块的模拟的目标设备在位状态，触发操作系统的热插拔驱动执行添加或者移除所述目标设备的操作（S206）；根据所述操作指令，输出相应的电源控制指令至电源控制模块（S207），接收并根据来自逻辑模块的电源控制指令，控制供给所述目标设备的电源信号开启或者断开（S208）。
Patent WO-2022095012-A1 (WO)
Inventor: ZOU WEN
IPC: H04N5/232
Filed: 2020-11-09
Abstract: 本申请实施例提供一种快门调整方法，用于拍摄装置，该方法包括获取拍摄对象的深度信息，基于所述拍摄装置的焦距与所述拍摄对象的深度信息确定所述拍摄装置的安全快门时间，基于所述安全快门时间调整所述拍摄装置的快门时间。本申请实现了基于场景来调整快门时间。本申请还提供了快门调整装置、拍摄装置、可移动平台、控制终端以及计算机存储介质。
Patent WO-2021135759-A1 (WO)
Inventor: CHEN HU
IPC: B23B19/02
Filed: 2020-11-27
Abstract: 一种带传动的角度附件头，包括机壳（1）、动力机构、传动机构以及主轴（30）；动力机构和传动机构置于机壳（1）内；动力机构包括伺服电机（20）和减速机（21），伺服电机（20）与减速机（21）连接，减速机（21）的输入轴与输出轴垂直设置；传动机构包括主动轮（22）、传动带（23）以及从动轮（24），减速机（21）的输出轴上安装有主动轮（22）；主轴（30）的一侧通过转动轴（31）安装在机壳（1）上，转动轴（31）远离主轴（30）的一端安装有从动轮（24），主动轮（22）和从动轮（24）通过传动带（23）连接，主轴（30）和动力机构位于传动机构的同侧。该附件头具有体积小，结构简单，适于深腔加工等优点。
Patent WO-2021115145-A1 (WO)
Inventor: LI YONGJIAN
IPC: H01S3/067
Filed: 2020-11-30
Abstract: A fiber laser, comprising a first resonant cavity, a second resonant cavity, pump sources (900), and a beam combiner (800); the first resonant cavity comprises a fourth grating (400), a first active optical fiber (500), and a first feedback element; a first end of the fourth grating (400) is connected to the first feedback element by means of the first active optical fiber (500); the second resonant cavity comprises a second grating (200), a second active optical fiber (600), and a second feedback element; a first end of the second grating (200) is connected to the second feedback element by means of the second active optical fiber (600); a Q switch (700) is provided in the first resonant cavity or the second resonant cavity; the pump sources (900) are connected to a pump end of the beam combiner (800); a signal end or an output end of the combiner (800) is inserted into the second resonant cavity and connected to the second active optical fiber (600); and a second end of the second grating (200) or a second end of the fourth grating (400) is connected to an output port of the fiber laser. The laser achieves active and passive dual Q-switching, helping to reduce the pulse width of the fiber laser, increasing peak power, and expanding the application of a pulsed fiber laser.