baber/WOPTO huggingface dataset:
Patent WO-2018090780-A1 (WO)
Title: 一种旋转伸缩机芯及使用其的皮肤护理设备
Inventor: ZOU JIANHAN
IPC: A47K7/04
Filed: 2017-10-18
Abstract: 一种旋转伸缩机芯（3），包括：驱动机构（31）、传动机构（32）、输出转轴（33）；传动机构（32）包括转动传动机构（321）和升降传动机构（322）；转动传动机构（321）受驱动机构（31）驱动而转动，并带动输出转轴（33）绕其轴向转动；升降传动机构（322）受驱动机构（31）驱动而转动，输出转轴（33）具有连动件（332），连动件（332）与升降传动机构（322）顶抵，并且升降传动机构（322）在转动过程中，连动件（332）与升降传动机构（322）的顶抵配合面高度连续变化，带动输出转轴（33）沿着其轴向上下运动。还提供了使用旋转伸缩机芯（3）的皮肤护理设备。旋转伸缩机芯（3）及使用其的皮肤护理设备，通过设置升降传动机构（322），使得输出转轴（33）在转动的过程带动清洁组件（2）在转动的同时上下往复运动，实现更好的清洁和按摩效果。
Patent WO-2018196301-A1 (WO)
Title: Cmos图像传感器及其像素电路、驱动方法
Inventor: CHENG CHIH-JEN
IPC: H04N5/3745
Filed: 2017-10-20
Abstract: 一种CMOS图像传感器及其像素电路、驱动方法。CMOS图像传感器的像素电路包括：采集电路，用于对入射光进行采集，并将采集到的光信号转换为电信号；源跟随电路，用于在扫描线的控制下，将接收到的电信号输出至采集信号输出端；电压转换电路，配置为通过读取信号线与所述采集信号输出端相连接，将所述采集信号输出端的电压转换至输出电压，并由电压输出端输出；其中，该输出电压位于图像处理器的工作电压范围内。
Patent WO-2018077279-A1 (WO)
Title: 洗衣机
Inventor: YONEDA MASANORI
IPC: D06F37/12
Filed: 2017-10-30
Abstract: 一种洗衣机(1)，其能相对于洗衣机主体(4)容易地拆装被驱动旋转的洗涤桶(2)。洗衣机(1)包含：洗涤桶(2)，可拆装地装接有洗涤桶(2)的洗衣机主体(4)；以及锁定解除机构(84)。洗衣机主体(4)具有：容纳空间(4A)，容纳洗涤桶(2)；以及支承部(65)，从下侧(Z2)与容纳空间(4A)内的洗涤桶(2)的底壁(12)对置，并在支承洗涤桶(2)的状态下被驱动旋转。锁定解除机构(84)具有：凸部(71)，设于支承部(65)；凹部(19E)，设于底壁(12)并接纳凸部(71)；以及凹陷部(71B)，形成于凸部(71)的外周面(71A)并供凹部(19E)的边缘部(19H)嵌入。锁定解除机构(84)根据拆装时的洗涤桶(2)的旋转，将容纳空间(4A)内的洗涤桶(2)锁定于支承部(65)，或者解除其锁定。
Patent WO-2018090870-A1 (WO)
Title: 支撑机构及移动终端
Inventor: YOU YULIN
IPC: G06F1/16
Filed: 2017-11-10
Abstract: 一种支撑机构及移动终端，该支撑机构可以包括：第一托板、第二托板、以及连接所述第一托板和所述第二托板的传动机构；当所述支撑机构处于支撑状态时，所述第一托板与所述第二托板处于第一相对位置，形成一个支撑平面。
Patent WO-2018099362-A1 (WO)
Inventor: XIA ENPIN
IPC: F25D23/00
Filed: 2017-11-28
Abstract: A vacuum pump mounting box (100), used for placing a vacuum pump (600) and disposed in a refrigerator (500). The refrigerator (500) comprises a housing (5) and an inner container (6) disposed in the housing (5). The housing (5) comprises a rear plate (51), an upper plate (52), a lower plate, and two side plates (53). The vacuum pump mounting box (100) comprises an inner box (1) and an outer box (2) used for accommodating the inner box (1). The inner box (1) comprises two secondary inner boxes (10) that match with each other to form an accommodating space for accommodating the vacuum pump (600). The outer box (2) comprises two secondary outer boxes (20) that match with each other to form another accommodating space for accommodating the inner box (1). The vacuum pump mounting box (100) is disposed between the inner container (6) and the rear plate (51) and is fixed on the rear plate (51).
Patent WO-2018108055-A1 (WO)
Title: 冰箱
Inventor: TUTIAN JUNZHI
IPC: F25D17/06
Filed: 2017-12-12
Abstract: 冰箱(1)，包括配设有冷却器(32)的冷却室(13)、连结冷却室(13)与贮藏室的供给风路(15)、在将冷却室(13)与供给风路(15)相连的送风口(26)处设置的送风机(40)、覆盖送风机(40)的可动式送风机罩(60)、以及固定于将贮藏室与供给风路(15)划分开的间隔构件(35)且支撑送风机(40)和送风机罩(60)的基底构件(51)，间隔构件(35)具有：支轴部(37)，其从面向供给风路侧的主面突出，并被插入基底构件(51)的支撑孔(53a)内；以及卡止片(38)，其与基底构件(51)的外周部卡合，在卡止片(38)所卡合的基底构件(51)的外周部附近，形成有组装时发生变形以容许卡止片(38)的爪部(39)通过的弹性部(57)。
Patent WO-2019075898-A1 (WO)
Title: Three-step pre-wetting method in through-silicon-via electroplating
Inventor: LI CAO
IPC: H01L21/768
Filed: 2017-12-19
Abstract: A three-step pre-wetting method in through-silicon-via electroplating, comprising: immersing and soaking a through-silicon-via wafer of a seed copper layer in a wetting liquid, to obtain a preliminarily wetted wafer when the through-silicon-via wafer of the seed copper layer is completely wetted; immersing and soaking the preliminarily wetted wafer in deionized water to obtain a re-wetted wafer; and immersing and soaking the re-wetted wafer in an electroplating solution such that solute in the electroplating solution is diffused into through-silicon-vias to wet the interiors of the through-silicon-vias. By means of the method, wetting of through-silicon-vias with high aspect ratios can be implemented, the problem of fall-off of the seed layer is avoided, the costs are reduced, the process time is greatly shortened, and the efficiency is improved.
Patent WO-2018121343-A1 (WO)
Title: 非连续接收调整方法及装置
Inventor: CHEN NINGYU
IPC: H04W28/18
Filed: 2017-12-19
Abstract: 本公开提供了一种DRX调整方法及装置，其中，DRX调整方法包括：向基站发送调整DRX周期的请求信息；所述请求信息可以请求将DRX周期调长、调短或不变；接收所述基站根据所述请求信息反馈的指示信息；在所述指示信息指示准许调整DRX周期时，根据所述指示信息调整本地的DRX周期。
Patent WO-2018121582-A1 (WO)
Title: 脚本生成方法及装置
Inventor: LI KE
IPC: G06F9/44
Filed: 2017-12-27
Abstract: 本公开公开了一种脚本生成方法及装置，其方法包括：在浏览器上显示包括终端设备UI界面各个控件信息的图片；依次捕捉用户在浏览器上操作图片的行为，获取相关的操作行为信息；将操作行为信息按照用户在浏览器上操作的顺序进行记录；保存记录的操作行为信息，生成与操作行为信息对应的脚本文件。
Patent WO-2018133689-A1 (WO)
Title: 团体信息的获取方法及装置、交互系统
Inventor: MA XINGLIN
IPC: G06Q10/06
Filed: 2018-01-08
Abstract: 一种团体信息的获取方法及装置、交互系统，该方法可以包括：在移动化团体办公平台的客户端界面中，检测到针对团体信息平台的触发操作（102）；向所述移动化团体办公平台的服务端发送针对所述团体信息平台的页面获取请求（104）；根据所述服务端返回的页面数据，示出所述团体信息平台的功能页面；其中，所述功能页面用于对所述移动化团体办公平台的已注册团体进行团体信息的集中展示（106）。通过该方法，可以在移动化团体办公平台上实现团体内部事件处理的同时，基于移动化团体办公平台与团体信息平台之间的联接互通，可以实现对团体外部事件的访问和处理，从而在同一团体的内外之间、不同团体之间实现更加便捷的信息交互。
Patent WO-2019127805-A1 (WO)
Title: 缓冲板及液晶面板包装结构
Inventor: LV CHENGLING
IPC: B65D25/10
Filed: 2018-01-25
Abstract: 一种缓冲板以及一种液晶面板包装结构，该缓冲板包括板本体（10）、设于板本体（10）的第一表面上的第一限位结构和设于板本体的与第一表面相对的第二表面上的第二限位结构，第一限位结构用于固定平面型液晶面板，第二限位结构用于固定曲面型液晶面板。该液晶面板包装结构包括侧缓冲板（40）和两个缓冲板，两个缓冲板相对设置，且两个第一限位结构（20）或者两个第二限位结构（30）相向，侧缓冲板（40）设于两个缓冲板之间，且侧缓冲板（40）上设有用于固定平面型液晶面板或曲面型液晶面板的第三限位结构（41）。所述缓冲板和液晶面板包装结构可实现对不同类型的液晶面板的固定，提高缓冲板的利用率，同时通过缓冲板和侧缓冲板的配合，实现对不同类型的液晶面板的包装，缓解仓储压力，降低包装成本。
Patent WO-2018153283-A1 (WO)
Title: 终端天线及终端
Inventor: XU SU
IPC: G05B19/418
Filed: 2018-02-09
Abstract: 本申请公开了一种终端天线及终端，属于无线通信技术领域。该终端天线包括：接地地板、天线支架和天线辐射结构，接地地板与天线支架连接，天线辐射结构分别与接地地板和所述天线支架连接，天线支架具有各向异性。由于天线支架具有各向异性，也即，天线支架的本构参数在某一方向上的分量，与其他任意方向上的分量在数值上不同，这样使得电磁波能够向不同方向辐射，天线支架起到了辅助辐射的作用。本申请通过具有各向异性的天线支架，在不增大终端天线的尺寸的情况下，使得终端天线的带宽和效率也能够满足设计要求，用于终端。
Patent WO-2019157752-A1 (WO)
Inventor: YU YINGHUI
IPC: H04W74/08
Filed: 2018-02-14
Abstract: 本申请提供一种随机接入方法及装置，该方法包括：终端确定待传输数据的业务属性，所述业务属性包括下述一种或多种：业务类型属性、业务数据包属性、业务时延属性；若所述业务属性满足预设数据早传条件，所述终端通过早传专用资源向网络设备发送随机接入请求。实现了在业务属性满足预设数据早传条件后，再发起早传，这样就会减少发起早传的情况，从而节约资源；另外，也可以提高早传的成功率。
Patent WO-2019119663-A1 (WO)
Title: Method, device and system for measuring tower top displacement of wind power generator set
Inventor: WANG YU
IPC: G01B11/16
Filed: 2018-03-22
Abstract: Provided are a method, device and system for measuring a tower top displacement of a wind power generator set. The method may comprise: photographing a multi-frame image of a tower top; calculating an image displacement of a feature point in the multi-frame image; and calculating a tower top displacement according to the calculated image displacement.
Patent WO-2018177344-A1 (WO)
Title: 离心式右心室辅助装置
Inventor: YUAN HAIYUN
IPC: A61M60/232
Filed: 2018-03-29
Abstract: 一种离心式右心室辅助装置，包括离心泵和动力传递部件，离心泵具有驱动端，动力传递部件与驱动端连接，用于随呼吸肌的运动带动驱动端转动，以驱动离心泵实现血液的泵入和泵出。这种辅助装置能够辅助右心室发育不良或右心功能不全等患者，实现反复的血液泵入和泵出动作，为肺循环提供所需动力，使人体内血液接近正常流动；而且，利用患者呼吸时的动力辅助右心室，可省去复杂的动力和控制系统，与外接动力驱动相比，更容易保证体肺循环相平衡，从而能够较好地辅助右心室，并达到较长的辅助时间，有利于临床应用和推广。
Patent WO-2019136841-A1 (WO)
Title: Method for extracting content tag of live stream rooms, storage medium, electronic device, and system
Inventor: WANG LU
IPC: G06F17/27
Filed: 2018-03-30
Abstract: Disclosed in the present invention are a method for extracting content tags of live stream rooms, a storage medium, an electronic device, and a system, relating to the technical field of large data recommendation. The present invention comprises performing, according to a live stream vocabulary dictionary, word partitioning on live stream room titles and bullet comments within a predetermined time period; performing word frequency counting on a text on which word partitioning has been performed, extracting words, having a word frequency exceeding a preset value or appearing in more than a preset number of live stream rooms, as content tag candidate words, summarizing content tag candidate words having similar meanings as a content tag, and taking the content tag candidate words having similar meanings as tag association words of the content tag; and calculating a relevance between all content tags and a live stream room within a predetermined time period, sorting the content tags according to the relevance, and selecting one or more content tags as the content tags of the live stream room. The present invention fully takes into account of the frequency of occurrence of content tags and the number of live stream rooms, providing various tags, saving labor costs.
Patent WO-2019148659-A1 (WO)
Title: Slide type terminal
Inventor: LUO JIANHONG
IPC: H04M1/02
Filed: 2018-04-13
Abstract: The embodiments of the present application relate to the technical field of terminals, and provided thereby are a slide type terminal. Influence of an FPC on the sliding smoothness when an upper sliding cover and a lower sliding cover slide relative to each other is reduced. The terminal comprises the upper sliding cover and the lower sliding cover that are arranged opposite to each other. The upper sliding cover and the lower sliding cover may slide relative to each other. The upper sliding cover comprises a first device and a second device, and the first device is connected to the lower sliding cover by means of a first FPC, and the second device is connected to the lower sliding cover by means of a second FPC, wherein the first FPC and the second FPC are disposed in a bent state between the upper sliding cover and the lower sliding cover. When the upper sliding cover slides relative to the lower sliding cover, the first FPC and the second FPC slide together along with the upper sliding cover.
Patent WO-2019019750-A1 (WO)
Title: Annuity management system and method, server, and storage medium
Inventor: HUANG HAILIANG
IPC: G06Q40/08
Filed: 2018-04-28
Abstract: An annuity management system, comprising: an annuity handling system for receiving an annuity service processing request sent by an enterprise terminal, the annuity service processing request carrying an annuity plan identifier, enterprise information, and employee information; an annuity trustee system for establishing an annuity service according to the annuity plan identifier and the enterprise information, the annuity handling system being further used for receiving an annuity payment request sent by the enterprise terminal; and an account management system for performing an annuity payment accounting operation for multiple employees according to the annuity payment request. The annuity trustee system is further used for obtaining annuity income corresponding to the annuity service. The account management system is further used for performing an annuity income allocation accounting operation for the multiple employees according to the annuity income. The annuity handling system is further used for receiving an annuity drawing request sent by an employee terminal. The annuity trustee system is further used for generating an annuity payoff request according to the annuity drawing request and sending the annuity payoff request to an administration terminal.
Patent WO-2019205130-A1 (WO)
Title: Method of fabricating stretchable electronic device, stretchable electronic device, and stretchable display apparatus
Inventor: XU YINGSONG
IPC: H01L27/00
Filed: 2018-04-28
Abstract: The present application provides a method of fabricating a stretchable electronic device. The method includes forming an elastomer polymer layer on a base substrate; selectively stiffening the elastomer polymer layer in a plurality of defined regions of the elastomer polymer layer, thereby forming a modified elastomer polymer layer having a plurality of stiffened portions respectively in a plurality of stiffened regions spaced apart by one or more elastomeric portions in one or more elastomeric regions, the plurality of stiffened portions having a Young's modulus greater than a Young's modulus of the one or more elastomeric portions; and forming a plurality of electronic devices respectively in the plurality of stiffened regions, each of the plurality of electronic devices formed on a side of one of the plurality of stiffened portions distal to the base substrate.
Patent WO-2019033827-A1 (WO)
Title: In-vehicle noise cancellation method, apparatus and device, and storage medium
Inventor: GONG QING
IPC: H04R3/12
Filed: 2018-05-31
Abstract: The present application provides an in-vehicle noise cancellation method, apparatus and device, and a storage medium. The noise cancellation method comprises: obtaining a noise signal inside a vehicle and analyzing the noise signal to obtain a frequency of the noise signal; and generating and outputting a linear subharmonic wave signal according to the frequency of the noise signal. In the technical solution of the present application, a subharmonic wave signal is constituted according to a frequency of a noise signal, and the frequency of the subharmonic wave signal is a fractional multiple of a noise signal frequency component; after the subharmonic wave is outputted, a noise high frequency signal component in an entire acoustical signal does not change, but components of other frequency signals are increased, enabling the high frequency signal component becoming small, thereby enabling the sharpness of the noise signal to be decreased, creating a good in-vehicle acoustical environment, and improving the comfort level of passengers.
Patent WO-2019119748-A1 (WO)
Inventor: LEE SENG FOOK
IPC: G06Q30/06
Filed: 2018-06-15
Abstract: La présente invention concerne un système pour permettre une communication entre un acheteur et un vendeur. Le système comprend : un module de gestion d'affichage pour présenter l'affichage 3D virtuel d'un endroit à l'acheteur de telle sorte que l'acheteur a l'impression qu'il fait partie de l'affichage 3D virtuel, l'affichage 3D virtuel comprenant une pluralité d'images balayées ; et un émetteur-récepteur pour : recevoir une requête de l'acheteur concernant un produit/service, la requête comprenant un message textuel et/ou un message audio et/ou un message vidéo ; envoyer la requête au vendeur du produit/service ; et recevoir une réponse du vendeur correspondant à la requête ; le module de gestion d'affichage présente la réponse à l'acheteur dans l'affichage 3D virtuel de l'endroit.
Patent WO-2018202218-A1 (WO)
Inventor: LI YONG
IPC: H04L5/00
Filed: 2018-06-15
Abstract: L'invention concerne un procédé et un dispositif d'émission de signal de référence d'informations d'état de canal, ledit procédé comprenant les étapes suivantes : un premier nœud de communication détermine des informations d'indication de signal de référence d'informations d'état de canal ; ledit premier nœud de communication émet les informations d'indication de signal de référence d'informations d'état de canal à un second nœud de communication ; le premier nœud de communication émet ou reçoit un signal de référence d'informations d'état de canal selon les informations d'indication de signal de référence d'informations d'état de canal ; ledit élément sert à former la ressource de signal de référence d'informations d'état de canal, et ledit élément est un ensemble formé par des unités de ressource ayant des relations de position relatives.
Patent WO-2019001473-A1 (WO)
Title: Dendritic polyglycol derivative, preparation method therefor, and application thereof
Inventor: ZHU HUI
IPC: C07C41/18
Filed: 2018-06-27
Abstract: Provided are a dendritic polyglycol derivative, a preparation method therefor, and an application thereof. The dendritic polyglycol derivative has a structure of formula (I), a plurality of terminal functional groups, and better water solubility when compared to straight-chain polyglycols. The dendritic polyglycol derivative can resolve the issue of insufficient water solubility caused by an increase in load when polyglycols are used to modify insoluble drugs. The preparation method further provided for the dendritic polyglycol derivative has mild reaction conditions, and is environmentally friendly, low cost, and easy to industrialize.
Patent WO-2019153637-A1 (WO)
Inventor: WANG LIN
IPC: G03B21/60
Filed: 2018-07-06
Abstract: A projection screen (1), comprising a first region (101), a second region (102), and a third region (103). The first region (101) is located on the left side of the projection screen (1); the third region (103) is located on the right side of the projection screen (1); the second region (102) is located at the middle of the projection screen (1); the first to third regions (101, 102, 103) are all provided with sound transmission holes (H); the number of the sound transmission holes (H) per unit area in the second region (102) is greater than the number of the sound transmission holes (H) per unit area in the first and third regions (101, 103). The problems of non-uniform brightness and poor sound transmission effect of the projection screen (1) are solved, and the brightness uniformity and sound transmission quality of the projection screen (1) are improved.
Patent WO-2019011330-A1 (WO)
Title: Method and device for antenna switching, antenna system, and storage medium
Inventor: LI YUANYONG
IPC: H04B7/08
Filed: 2018-07-13
Abstract: Provided in the present disclosure are an antenna switching method, an antenna switching device, an antenna system, and a storage medium. The antenna switching method comprises the steps of: acquiring the strength of a first received signal received by a receiving link of a first antenna and the strength of a second received signal received by a receiving link of a second antenna; comparing the strength of the first received signal with the strength of the second received signal; and selecting either the first antenna or the second antenna for connection to a transmitting link on the basis of the comparison result.
Patent WO-2019011337-A1 (WO)
Title: Crystal form of qaw-039, preparation method and use thereof
Inventor: CHEN MINHUA
IPC: A61K31/437
Filed: 2018-07-13
Abstract: The invention relates to a crystal form of a compound (I), a preparation method and use thereof, a pharmaceutical composition containing said crystal form, and the use of the crystal form in preparing the prostaglandin D2 receptor 2 antagonist and a drug preparation for treating asthma, allergic dermatitis or allergic rhinitis. Said crystal form has a low hygroscopicity, good stability and high dissolution rate, and the formulation thereof is exploitable and may provide new options for developing a drug containing a compound (I).
Patent WO-2019033895-A1 (WO)
Title: Permeable building composition
Inventor: WANG JING
IPC: C04B28/00
Filed: 2018-07-19
Abstract: The present invention relates to a permeable building composition, which can be used for repair to prolong the service life of concrete, reinforced concrete, or a brick structure. The permeable building composition comprises a cement, sand, a plasticizer, an antirust agent, calcium nitrate granules, double granulated calcium superphosphate, sodium nitrate, a concentrated chlorine-free potassium fertilizer, soda ash, and industrial calcium chloride. The composition has good properties and can be used to make a solid product having high electrical resistance, water resistance, and durability.
Patent WO-2019029569-A1 (WO)
Title: Phr reporting method, related equipment and system
Inventor: WU YUMIN
IPC: H04W52/14
Filed: 2018-08-08
Abstract: provided in an embodiment of the present disclosure are a PHR reporting method, a related device, and a system. The method comprises: obtaining PHR configuration information of BWP supported by a user terminal; and reporting the PHR to a base station according to the PHR configuration information, wherein the PHR comprises a power margin of the BWP indicated by the PHR configuration information and/or a maximum transmit power of the terminal.
Patent WO-2020034096-A1 (WO)
Title: Terminal power level control method and device, and terminal
Inventor: TANG HAI
IPC: H04W52/14
Filed: 2018-08-14
Abstract: Embodiments of the present application provides a terminal power level control method and device, and a terminal, comprising: the terminal determines an actual uplink time slot ratio of the terminal in a first time window under a first power level state, wherein the first time window comprises multiple second time windows; when the actual uplink time slot ratio in the first time window exceeds the maximum uplink time slot ratio supported by the terminal, the power level of the terminal changes from the first power level to a second power level, the power of the second power level being less than that of the first power level.
Patent WO-2019042339-A1 (WO)
Title: F-theta lens suitable for use in laser processing
Inventor: SUN JIANCHAO
IPC: G02B13/00
Filed: 2018-08-30
Abstract: Disclosed is an F-theta lens suitable for use in laser processing. The F-theta lens comprises a first lens (1) with a positive optical power, a second lens (2) with a negative optical power, a third lens (3) with a positive optical power, a fourth lens (4) with a positive optical power, and a fifth lens (5) with a positive optical power. By means of optimizing the lens surface curvature of the lens, the F-theta lens has the characteristics of a large field of view, low telecentricity and small distortion, effectively reduces measurement errors of light spots in the horizontal direction during laser processing, and better inhibits deformation of laser spots in the range of a scanning field of view.
Patent WO-2019072050-A1 (WO)
Title: Dual-bearing structure for motor having dual-lubrication system
Inventor: DENG FANGLIN
IPC: H02K5/173
Filed: 2018-09-03
Abstract: A dual-bearing structure for a motor having a dual-lubrication system. An inner bearing (7), a grease regulator (5) and an outer bearing (3) are sleeved on a rotation shaft (10); the grease regulator is located between the inner bearing and the outer bearing; an outer bearing chamber (4) is sleeved on the outer bearing; an inner bearing chamber (6) is sleeved on the inner bearing; the end parts of the inner bearing and the inner bearing chamber are provided with an inner bearing cover (8); an inner oil seal (9) is provided between the inner bearing cover and the rotation shaft; the end parts of the outer bearing and the outer bearing chamber are provided with an outer bearing cover (2); an outer oil seal (1) is provided between the outer bearing cover and the rotation shaft; the inner bearing chamber, the inner bearing cover, the inner oil seal and the inner bearing form an inner grease storage cavity; an inner grease injection channel (122) is provided inside the inner bearing chamber; the outer bearing chamber, the outer bearing cover, the outer oil seal and the outer bearing form an outer grease storage cavity; an outer grease injection channel (121) is provided inside the outer bearing chamber; the inner bearing chamber, the inner bearing and the grease regulator form an inner grease discharging cavity; the outer bearing chamber, the outer bearing and the grease regulator form an outer grease discharging cavity; grease discharging holes (13) are provided at the lateral bottom of the outer bearing chamber and are respectively in communication with the inner grease discharging cavity and the outer grease discharging cavity.