baber/WOPTO huggingface dataset:
Patent WO-2018107862-A1 (WO)
Title: 一种阻燃防霉防腿色建筑保温外墙
Inventor: LAI QUNGUANG
IPC: C04B28/04
Filed: 2017-09-29
Abstract: 一种阻燃防霉防褪色建筑保温外墙，包括基层和阻燃防霉涂层，其阻燃防霉涂层涂覆于基层上，其特征在于，其基层包括以下重量份的原料：复合纤维材料9-16份、珍珠岩6-8份、粉煤灰4-8份、纳米硫酸钙7-11份、氯化亚锡2-4份、改性硅藻土30-40份、水镁石5-10份、可再分散胶粉1-3份、羟丙基甲基纤维素1-3份、普通硅酸盐水泥20-30份、建筑用负离子粉5-15份、脲醛树脂10-20份、芳砜纶纤维1-3份、十二烷基硫酸钠0.2-0.8份、甲基纤维素0.3-0.5份、六偏磷酸钠0.3-0.5份；其保温层包括以下重量份的原料：氢氧化镁4-8份、黄原胶3-6份、富马酸二酯5-8份、硬脂酸3.5-7份、线性低密度聚乙烯3-6份、丁晴橡胶4-10份、磷酸氢二铝5-7份、结晶II型聚磷酸铵10-14份、蛤壳粉4-10份、油酰胺6-8份、云母粉5-10份、偶联剂1-5份、分散剂3-5份、阻燃剂0.1-1份、聚乙烯醇缩丁醛5-10份、水5-9份。阻燃防霉防褪色建筑保温外墙隔热保温性能强，墙体不易出现空鼓、开裂、粉化、结露和脱落情况，以及发霉现象。
Patent WO-2019061344-A1 (WO)
Title: Multi-functional nail gun
Inventor: WANG WEIYI
IPC: B25C1/02
Filed: 2017-09-29
Abstract: Disclosed is a multi-functional nail gun, comprising: a housing (1); a nailing portion (2) provided at the front end of the housing; and a trigger device (3), with a part of the trigger device being provided in the housing, and a part of the trigger device extending to the outside of the housing, wherein the nailing portion (2) comprises: a nail outlet member (21) provided at the front end of the housing, with a surface on one side of the nail outlet member being provided with a nail outlet groove for accommodating a nail; a nail hammering member (22), with a part of the nail hammering member being inserted into the nail outlet groove (211), and the trigger device (3) controlling the nail hammering member to hammer in the nail; and an adjusting device (23), with a part of the adjusting device being provided outside the housing, and the adjusting being used for adjusting the depth of the nail outlet groove.
Patent WO-2018036569-A1 (WO)
Title: 一种节能阳光板
Inventor: JIANG WEIGUO
IPC: E04C2/30
Filed: 2017-10-19
Abstract: 一种节能阳光板，全部取消传统阳光板的格状结构，在螺丝孔的位置通过直接成型或熔接等方式设置有一定厚度的圆筒，同时在各层板材的四周设置边框，从而固定各层板材之间的距离和相对位置，并通过这种方式使各层板材之间的距离可以任意控制、板材的层数可以任意增加，从而可达到任意的保温性能；此外，随着板材之间隔状结构的全部取消，可以达到玻璃幕墙同等的透明功能。
Patent WO-2018077146-A1 (WO)
Title: 一种非对称的心脏瓣膜假体
Inventor: LV SHIWEN
IPC: A61F2/24
Filed: 2017-10-23
Abstract: 一种非对称的心脏瓣膜假体（100、200、300、400、500），包括支架（110、210、310）和人工瓣膜（120、220），支架（110、210、310）包括心房段（111、211、311、411）、支撑段（113、213、313、413、513）和瓣膜缝制段（112、212、312、412、512），支撑段（113、213、313、413、513）与瓣膜缝制段（112、212、312、412、512）的远端部分相连，心房段（111、211、311、411）与支撑段（113、213、313、413、513）相连，或者心房段（111、211、311、411）与瓣膜缝制段（112、212、312、412、512）的远端部分相连，人工瓣膜（120、220）被固定连接在瓣膜缝制段（112、212、312、412、512）上，在垂直于人工瓣膜（120、220）中轴线的横截面上，瓣膜缝制段（112、212、312、412、512）的中心与支撑段（113、213、313、413、513）的中心不重合，瓣膜缝制段（112、212、312、412、512）的横截面积小于患者自体瓣膜瓣环的横截面积，在自由状态下，瓣膜缝制段（112、212、312、412、512）至少部分位于患者自体瓣叶（581）之间，心房段（111、211、311、411）的横截面积大于或等于患者自体瓣膜瓣环的横截面积。
Patent WO-2018205554-A1 (WO)
Inventor: LIAO YANPING
IPC: G02F1/1333
Filed: 2017-11-24
Abstract: L'invention concerne un panneau d'affichage (1100) et son procédé de préparation, ainsi qu'un dispositif d'affichage. Le panneau d'affichage (1100) comprend : un substrat opposé (100) et un substrat à matrice (300) qui sont disposés selon un alignement de cellules, une matrice noire conductrice (200) étant disposée sur un côté du substrat opposé (100), et la matrice noire (200) est conçue de manière à être électriquement connectée à un circuit externe et être mise à la terre. Par conséquent, le panneau d'affichage (1100) réalise un blindage électromagnétique par l'intermédiaire de la matrice noire (200), de sorte que le coût de production puisse être réduit et qu'un processus de production puisse être simplifié.
Patent WO-2018130015-A1 (WO)
Title: 一种海浪发电系统、海上平台以及氢能源基地
Inventor: YUE YONGQIANG
IPC: F03B13/14
Filed: 2017-11-27
Abstract: 一种海浪发电系统、海上平台以及氢能源基地，所述海浪发电系统包括电能利用装置、发电装置和用于将变化海浪转化为稳定的海水波动的转化装置；所述发电装置与所述转化装置相连并接收所述海水波动进行发电，所述电能利用装置与所述发电装置相连以使所述发电装置产生的电能被用户利用。该海浪发电系统将大小不同的海浪转化为稳定的海水波动，使发电装置可以稳定高效地发电，使大小不同的海浪被充分利用，降低了发电成本。
Patent WO-2018233226-A1 (WO)
Title: Dual-frequency slot mimo antenna
Inventor: PENG BIAO
IPC: H01Q13/10
Filed: 2017-11-30
Abstract: Disclosed is a dual-frequency slot MIMO antenna, comprising two antenna radiators, wherein the bottoms of the two antenna radiators are connected to each other, and an included angle is formed between inner side edges thereof; the inner side edges of the two antenna radiators are connected via a neutral line; a metal layer is laid on an upper surface of a dielectric substrate covered by the two antenna radiators to serve as a metal radio frequency ground; the neutral line is connected to a lumped capacitor C; the lumped capacitor C is connected to a metal block; each antenna radiator is composed of a multi-mode slot resonator and a coplanar wave guide feeder line with a T-shaped structure; the multi-mode slot resonator is composed of a folded slot resonator and a coplanar wave guide stepped impedance resonator; the coplanar wave guide stepped impedance resonator is connected to the metal radio frequency ground; and the multi-mode slot resonator is fed via the coplanar wave guide feeder line. The dual-frequency slot MIMO antenna in the present utility model has a simple structure, a high practicability and a high isolation degree, and can realize the reconfigurability of an antenna frequency.
Patent WO-2019071810-A1 (WO)
Title: Device unlocking control method, apparatus, device and storage medium
Inventor: TAO LIN
IPC: G06F21/44
Filed: 2017-12-17
Abstract: Embodiments of the invention disclose a device unlocking control method, an apparatus, a device and a storage medium. The method comprises: upon receiving a device unlocking instruction, detecting whether there is at least one target terminal corresponding to pre-stored identity identification information in the coverage area of a wireless network in which the device is located; if so, setting the upper limit on the number of input errors for a device unlocking password to a first target number; and locking the device if it is detected that the number of times an incorrect password has been input exceeds the first target count. The technical solution of the present invention ensures password security while also preventing the device from being mistakenly locked, thereby improving user experience.
Patent WO-2019024411-A1 (WO)
Title: Hydrogen elimination agent and preparation method therefor, and electrolyte for aluminum electrolytic capacitor
Inventor: ZHENG ZHONGTIAN
IPC: H01G9/035
Filed: 2017-12-28
Abstract: To solve the problems of an existing hydrogen elimination agent for an aluminum electrolytic capacitor of poor solubility property and influence to break-down voltage, provided is a hydrogen elimination agent. The hydrogen elimination agent is at least one of compound A as shown in structural formula I and compound B as shown in structural formula II; the solubility of the hydrogen elimination agent in an electrolyte for an aluminum electrolytic capacitor is 7% or more, and when the volume of addition in the electrolyte is 7%, the hydrogen elimination agent would not be separated out of the electrolyte, and other components in the electrolyte likewise would not be separated out. Addition of the hydrogen elimination agent in the electrolyte has no influence to the electrical conductivity and break-down voltage of the electrolyte, and the gas production rate is low, and thus the hydrogen elimination performance is superior.
Patent WO-2018141297-A1 (WO)
Title: Mécanisme de détermination de réciprocité de faisceau et de gestion de faisceau de liaison montante
Inventor: YU CHIA-HAO
IPC: H04B7/04
Filed: 2018-02-06
Abstract: L'invention concerne un procédé de rapport d'état de réciprocité de faisceau et de gestion de faisceau de liaison montante dans des systèmes de communication sans fil avec formation de faisceau. Dans un aspect nouveau, un UE détermine son état de réciprocité de faisceau d'UE et envoie un message d'« état de réciprocité de faisceau d'UE » à une BS, qui déclenche une gestion de faisceau de liaison montante appropriée en conséquence. Le message d'état de réciprocité du faisceau d'UE peut avoir lieu lorsque l'UE essaie de s'enregistrer auprès du réseau. Par exemple, selon un réglage usine, l'UE rapporte au moins « positif » ou « négatif » dans ce message. L'état de réciprocité du faisceau peut être mis à jour par un message de « mise à jour d'état de réciprocité de faisceau d'UE ». Une information auxiliaire peut être transmise à la BS pour une gestion de faisceau UL si l'UE rapporte « négatif » pour un état de réciprocité de faisceau. Les informations auxiliaires indiquent le niveau d'incertitude des faisceaux d'UE.
Patent WO-2019015314-A1 (WO)
Title: Backlight module and display apparatus
Inventor: WANG XUERONG
IPC: G02F1/13357
Filed: 2018-02-11
Abstract: A backlight module and a display apparatus. The backlight module comprises a light source assembly (10), and an illumination rendering film (20) arranged at a light emergent side of the light source assembly (10). The illumination rendering film (20) comprises a plurality of dimming units (201) arranged in a matrix; and the dimming units (201) are configured to receive a dimming signal, and change transmittance of the dimming units (201) according to the dimming signal. The backlight module and the display apparatus can avoid repeated adjustment of a light source in the process of regional dimming, without the need to adjust the light source in the light source assembly.
Patent WO-2019001009-A1 (WO)
Title: Cooking appliance graphical cooking profiles
Inventor: WILSON MARK W
IPC: G06F3/0488
Filed: 2018-03-12
Abstract: Graphical cooking profiles may be used to control a cooking appliance (10) such as an oven, stovetop, range, grill or the like by varying applied cooking energy in the cooking appliance (10) over the course of a cooking cycle.
Patent WO-2018188573-A1 (WO)
Title: 一种电磁炉
Inventor: YANG HUA
IPC: F24C7/08
Filed: 2018-04-10
Abstract: 一种电磁炉，包括底壳(1)、面板(2)、温控器(3)，温控器(3)包括内架(31)，内架(31)的顶端设置有与烹饪锅体接触的感温盖(32)，内架(31)内腔中设置有接触式或非接触式测量感温盖(32)温度的测温元件(33)；温控器(3)从面板(2)的通孔中伸缩探出，温控器(3)的感温盖(32)与烹饪锅体贴合；面板(2)的通孔与温控器(3)之间设置有避免汤汁进入的密封结构或设置有将汤汁导送出底壳(1)的排水结构；面板（2）处形成通孔，通孔中设置有伸缩式的温控器（3），从而能够实现温控器（3）与烹饪锅体底部的贴合，保证温控器（3）对烹饪锅体底部的温度进行精确测量，通过面板通孔处的密封结构或排水结构避免面板(2)上的汤汁进入到底壳（1）的电气元件中。
Patent WO-2019136878-A1 (WO)
Inventor: LUO NENGYUN
IPC: H02J50/10
Filed: 2018-04-20
Abstract: La présente invention concerne un système électrique intelligent basé sur la charge sans fil et un appareil électrique intelligent. Le système électrique intelligent comprend un premier corps (1) et un second corps (2); le premier corps (1) comprend à l'intérieur un module de transmission de charge sans fil (4), le second corps (2) comprend à l'intérieur un module de réception de charge sans fil (5), un module de stockage d'énergie (6) et un module de communication sans fil (7); et le premier corps (1) et le second corps (2) sont reliés de façon détachable. Le système électrique intelligent basé sur la charge sans fil de la présente invention permet d'éviter des problèmes de câblage, de façon à réaliser le placement et l'agencement aléatoires de produits électriques.
Patent WO-2019210443-A1 (WO)
Inventor: YAO PING
IPC: E02D31/02
Filed: 2018-05-01
Abstract: 一种工厂仓库地下室主体防水结构，包括地下室底板防水结构、地下室顶板防水结构、地下室侧墙防水结构、地下室水池防水结构。结构合理，防水性能好、施工方便。
Patent WO-2019041874-A1 (WO)
Title: Aerial vehicle control method and device
Inventor: FENG YINHUA
IPC: G05B19/00
Filed: 2018-05-02
Abstract: Disclosed in the present invention are an aerial vehicle control method and a device. The aircraft control method is used for a terminal device, and the terminal device establishes a connection with a remote controller of the aerial vehicle. The method comprises: receiving current status information returned by the aerial vehicle by means of the remote controller; generating a flight task according to a preset target task and current state information of the aerial vehicle; transmitting the flight task to the aerial vehicle by means of the remote controller. According to the method, tasks are assigned through the terminal device and are sent to each aerial vehicle through the remote controller, so that the aerial vehicle can fly according to a task trajectory according to the received flight tasks, thereby completing the target task. In this solution, it is not necessary to pre-burn each task trajectory into the flight control system of the aerial vehicle, but the task can be assigned in real time as needed. In this way, not only the work efficiency is provided, but the flexibility in a formation flight can be better, the target task can be adjusted in time according to needs, and the controllability is better.
Patent WO-2019213814-A1 (WO)
Title: Charging method and device, and terminal charging apparatus
Inventor: MI GENGLIN
IPC: H02J7/00
Filed: 2018-05-07
Abstract: The solution of the present invention is applicable to the technical field of terminals. Provided are a charging method and device, and a terminal charging apparatus. The method comprises: pushing advertisements to a user, and when it is detected that one of the advertisements has finished playing, determining, according to a preset first conversion relation and a quantity of finished advertisements, a charging duration at a charging port; and charging, according to the charging duration, an apparatus to be charged connected to the charging port, the apparatus being a mobile intelligent terminal or another chargeable apparatus connected to the charging port after the charging duration has been obtained by means of the mobile intelligent terminal. The solution of the present invention enables a user to selectively watch a quantity of advertisements as required in exchange for a charging duration, thereby accomplishing the object of free charging. Moreover, a charging duration corresponds to a charging port of a terminal charging apparatus, such that a charging operation can be performed on chargeable apparatuses including but not limited to a mobile intelligent terminal. The invention can be used flexibly.
Patent WO-2019213820-A1 (WO)
Title: Photographing control method and electronic device
Inventor: WANG XINGZE
IPC: H04N5/232
Filed: 2018-05-07
Abstract: Provided is a photographing control method, comprising: when a user performs a manually controlled photographing operation, a model setting a currently photographed image as a positive sample satisfying a photographing condition, and adjusting a parameter of the model itself according to the positive sample; the model sampling, according to a preset rule, an image frame not obtained by means of a manually controlled photographing operation so as to obtain a negative sample, and adjusting the parameter of the model according to the negative sample; and if it is determined that the training has satisfied a completion condition, ending the training to obtain a trained model for subsequent automatic photographing control. Also provided is an electronic device implementing the photographing control method. In the photographing control method and the electronic device, a model is trained, and the trained model is used to subsequently perform automatic photographing control, such that an image of a scene of interest containing content corresponding to the current preview image can be timely captured.
Patent WO-2018210211-A1 (WO)
Title: 像素电路及其驱动方法、显示装置
Inventor: XUAN MINGHUA
IPC: G09G3/3233
Filed: 2018-05-15
Abstract: 一种像素电路及其驱动方法、显示装置。该像素电路的驱动子电路（10）分别与驱动信号端（G1）、数据信号端（DATA）和驱动节点（C）连接，并且配置成在来自驱动信号端（G1）的驱动信号的控制下，向驱动节点（C）提供来自数据信号端（DATA）的数据信号。该像素电路的保持子电路（20）分别与驱动节点（C）、第一开关信号端（S1）、第一电源信号端（VDD）和第二电源信号端（VSS）连接，并且配置成在来自第一开关信号端（S1）的第一开关信号的控制下，获取驱动节点（C）的电位，并且在来自第一电源信号端（VDD）的第一电源信号和来自第二电源信号端（VSS）的第二电源信号的控制下，使驱动节点（C）的电位保持不变。该像素电路的发光子电路（30）与驱动节点（C）连接，并且配置成在驱动节点（C）的驱动下发光。
Patent WO-2019104957-A1 (WO)
Inventor: HUANG JIANDONG
IPC: G06F21/30
Filed: 2018-05-22
Abstract: 本发明提供了一种电子设备，所述电子设备包括主电路板、处理器、传感器件和存储介质；所述主电路板上设置有通用集成电路卡卡槽，所述通用集成电路卡卡槽里设置有通用集成电路卡；所述传感器件与处理器连接。本发明通过将用户生理特征信息存储于UICC卡，在识别认证过程中无需通过云端服务器进行校验，而是通过处理器获取UICC卡中的预设身份识别信息，并将其与传感器件采集得到的待认证的身份信息进行比对，实现身份识别认证过程。由于身份信息是实时采集、实时认证的，可以保证设备的验证操作者即为合法注册用户本人，有效提高了认证过程的安全性。
Patent WO-2018219194-A1 (WO)
Inventor: SONG AIGUO
IPC: B25J9/16
Filed: 2018-05-23
Abstract: 一种基于数据手臂的面向空间站机器人的遥操作系统，包括：手臂关节运动测量装置、数据采集装置、数据通信装置及PC终端。所述手臂关节运动测量装置由3组独立的MEMS传感器模块构成。所述数据采集装置由微处理器最小系统构成，用于读取和转换来自传输手臂关节运动测量装置的数据。所述数据通信装置通过串口接收数据采集装置的数据，通过蓝牙发送到PC终端。所述PC终端包括数据显示模块、手臂运动解算模块、机器人运动逆解算模块和虚拟场景渲染模块。本发明可以采集操作者手臂运动时，其肩、肘、腕三个关节的欧拉角，通过数据通信装置将数据发送至PC终端，并映射到虚拟手臂上，使虚拟手臂做出相应的动作。最终根据欧拉角和虚拟手臂的大臂、小臂和手掌的尺寸解算出手掌末端的运动轨迹，然后逆解算出机器人的关节角，将其用于遥操作机器人控制。本遥操作系统通过操作者的手臂动作直接控制遥操作机器人运动，可有效提高人机功效。
Patent WO-2018219358-A1 (WO)
Inventor: WANG MINGZHU
IPC: G02B3/00
Filed: 2018-06-04
Abstract: 光学镜头(10)、光学组件(20)和光学模组(100)以及制造方法，其中光学镜头(10)，其包括：至少两镜片单元(11)，两镜片单元(11)分别具有一第一面(1101)和一第二面(1102)，两镜片单元(11)的相邻的第一面(1101)和第二面(1102)相叠合,相邻两镜片单元(11)的折射率不同，以形成叠层布置的光学镜头(10)替代传统的光学镜头。
Patent WO-2019237271-A1 (WO)
Title: Display screen assembly, electronic device, and manufacturing method of electronic device
Inventor: TANG YIMEI
IPC: H04M1/02
Filed: 2018-06-13
Abstract: A display screen assembly (100), an electronic device (200), and a manufacturing method of an electronic device (200). The display screen assembly (100) comprises: a transparent cover plate (10); a display module (20), disposed at a side of the transparent cover plate (10) and provided with an installation hole (201); a camera (30), at least partially received in the installation hole (201) and comprising a housing (34) and an optical element (32) received in the housing (34), the housing (34) comprising a top end face (34a) facing toward the transparent cover plate (10), the top end face (34a) being provided with an opening (36) to expose the optical element (32); a black adhesive layer (40), located on the top end face (34a) and used for blocking and preventing the light leaked from the display module (20) from interfering the imaging of the optical element (32), the camera (30) being bonded to the transparent cover plate (10) by means of the black adhesive layer (40). The manufacturing method of an electronic device (200) comprises attaching a black adhesive layer (40) between a transparent cover plate (10) and a camera (30), thus preventing light leakage from a display module (20) to the camera (30) and improving the photographic effect of the camera (30).
Patent WO-2018233633-A1 (WO)
Title: Ssao inhibitor
Inventor: LUO ZHI
IPC: A61K31/4245
Filed: 2018-06-20
Abstract: The present invention provides an SSAO inhibitor and an application thereof in preparing a drug for treating a disease related to SSAO. In particular, the present invention provides a compound shown in formula (IV) and a pharmaceutically acceptable salt thereof.
Patent WO-2019140865-A1 (WO)
Title: Exhaust gas aftertreatment device
Inventor: LI JUNLIANG
IPC: B01D53/94
Filed: 2018-06-27
Abstract: Disclosed is an exhaust gas aftertreatment device, comprising a first aftertreatment carrier assembly (1), a second aftertreatment carrier assembly (2), and a mixer assembly (3), wherein the mixer assembly (3) comprises a housing (31), and a mixing tube (32) and a separation plate (33) located inside the housing (31), the separation plate (33) dividing the housing (31) into a first space (331) and a second space (332); the mixing tube (32) comprises a first tube portion (321) located in the first space (331) and a second tube portion (322) located in the second space (332), wherein the first tube portion (321) is provided with at least two first openings (3211) located on two sides thereof; and the exhaust gas aftertreatment device further comprises a first shutter plate portion (351) and a second shutter plate portion (352) for blocking the front ends of the first openings (3211) respectively. By means of this arrangement, and by providing the first and second shutter plate portions for rectification, the distribution uniformity of the gas flow is improved, and the mixing effect is also improved.
Patent WO-2019214053-A1 (WO)
Title: Portable small fan having entertainment function
Inventor: XU WENLONG
IPC: A63F13/00
Filed: 2018-07-12
Abstract: A portable small fan having an entertainment function, comprising a fan main body (1). A control assembly, a power source assembly, a driving member, and a fan blade assembly (2) are provided on the fan main body (1); the power source assembly is electrically connected to the control assembly, so as to provide power support for the operation of the fan main body (1); the control assembly is electrically connected to the driving member, so as to control the operation of the driving member; an output end of the driving member is transmittingly connected to the fan blade assembly (2); the fan main body (1) is further provided with a gaming device.
Patent WO-2019011318-A1 (WO)
Title: Control method for steel jacking platform capable of achieving overall jacking and partial jacking
Inventor: CHEN YUEXI
IPC: E04B1/35
Filed: 2018-07-13
Abstract: A control method for a steel jacking platform capable of achieving overall jacking and partial jacking, comprising: firstly, closing N main power supply switches, N control transformer power supply switches and N control circuit switches; during startup, pressing down corresponding startup switches on electromagnetic starters connected to the control circuit switches, powering on and pulling in coils of corresponding main contactors, closing and self-locking normally-opened auxiliary heads of the main contactors, closing main contact heads of the main contactors, and powering on and starting up corresponding motors to run continuously; and when stopping, pressing down stop switches on the electromagnetic starters connected to the control circuit switches, powering off and disconnecting coils of the corresponding main contactors, separating and disconnecting the self-locking contact heads of the main contactors, separating and disconnecting the main contact heads of the main contactors, and powering off the corresponding motors to stop running. The steel platform may be subjected to overall jacking and partial jacking, precise control in the use process of the steel platform is greatly improved, the requirements for steel platform jacking at different positions are met, without affecting the overall progress of construction.
Patent WO-2019128207-A1 (WO)
Inventor: REN SHAOYUN
IPC: F03G7/08
Filed: 2018-07-24
Abstract: A vibration damping component, comprising a hydraulic oil cylinder (1) and a hydraulic motor (2); The hydraulic oil cylinder (1) comprises a relatively independent oil storage cylinder (12) and a working cylinder (13), wherein the working cylinder (13) is internally provided with a first piston piece (14) and is divided into an expansion cavity (131) and a contraction cavity (132) by means of the first piston piece (14); the expansion cavity (131) is in communication with the oil storage cylinder (12) by means of a first unidirectional oil outlet pipe (15); the contraction cavity (132) is in communication with the oil storage cylinder (12) by means of a second unidirectional oil outlet pipe (16); the oil storage cylinder (12) is provided thereon with an oil outlet hole (31); an input end of the hydraulic motor (2) is connected to the oil outlet hole (31); and an output end of the hydraulic motor (2) is in communication respectively with the expansion cavity (131) by means of a first unidirectional oil return pipe (17) and with the contraction cavity (132) by means of a second unidirectional oil return pipe (18).