摘要：【中文】本发明涉及一种用于为传动链提供张紧力的液压张紧器。该液压张紧器包括柱塞和调节作用在柱塞上的力的压力释放阀，压力释放阀具有阀体、阀芯、阀盖和弹簧，阀体在轴向上具有流体流入端和流体流出端，从流体流入端流入阀体的流体能够推抵阀芯在阀体中沿轴向滑动，阀芯为中空筒状，阀芯朝向流体流入端的一端为封闭端，封闭端与阀体的内壁形成密封配合，阀芯的侧壁上形成有径向延伸的一级内泄压孔，阀体的侧壁上形成有径向延伸的一级外泄压孔；当阀芯接触流体流入端时，一级内泄压孔和一级外泄压孔不连通；当阀芯沿轴向朝向阀盖滑动时，一级内泄压孔和一级外泄压孔逐渐连通。本发明的液压张紧器能够根据流体压强的大小自动调节流体释放速率。 【EN】The present invention relates to a hydraulic tensioner for providing tension to a drive chain. The hydraulic tensioner comprises a plunger and a pressure release valve for adjusting force acting on the plunger, wherein the pressure release valve is provided with a valve body, a valve core, a valve cover and a spring, the valve body is provided with a fluid inflow end and a fluid outflow end in the axial direction, fluid flowing into the valve body from the fluid inflow end can push the valve core to slide in the valve body along the axial direction, the valve core is in a hollow cylinder shape, one end of the valve core facing the fluid inflow end is a closed end, the closed end is in sealing fit with the inner wall of the valve body, a first-stage inner pressure release hole extending in the radial direction is formed in the side wall of the valve core, and a first-stage outer pressure release hole extending in the radial; when the valve core contacts the fluid inflow end, the first-stage inner pressure relief hole is not communicated with the first-stage outer pressure relief hole; when the valve core slides towards the valve cover along the axial direction, the first-stage inner pressure relief hole is gradually communicated with the first-stage outer pressure relief hole. The hydraulic tensioner of the present invention is capable of automatically adjusting the fluid release rate based on the magnitude of the fluid pressure.

摘要：【中文】本发明涉及一种链条张紧器，其具有主体、柱塞和销，所述销具有用于操作所述销的操作部、用于防止所述柱塞从所述主体脱出的杆部和用于将所述销相对于所述主体和/或所述柱塞定位的定位部，所述主体具有插入孔，所述销的所述杆部插入所述插入孔中从而防止所述柱塞从所述主体脱出，所述主体和/或所述柱塞具有定位结构，所述定位部与所述定位结构接合，从而防止所述销相对于所述主体和/或所述柱塞转动。 【EN】The present invention relates to a chain tensioner having a main body, a plunger, and a pin, the pin having an operating portion for operating the pin, a shank portion for preventing the plunger from coming out of the main body, and a positioning portion for positioning the pin relative to the main body and/or the plunger, the main body having an insertion hole into which the shank portion of the pin is inserted so as to prevent the plunger from coming out of the main body, the main body and/or the plunger having a positioning structure with which the positioning portion is engaged so as to prevent the pin from rotating relative to the main body and/or the plunger.

摘要：【中文】一种多功能便捷式移动计量装置，包括箱体、配盘、刀闸；配盘与箱体滑动连接；配盘上设置有仪表表位、接线端子、接地端子、互感器、断路器等部件，箱体对接线部件有效保护。满足临时用电需求，并且充分减少繁琐的开户手续，提高仪表、配件、及线材的重复利用率。 【EN】A multifunctional portable mobile metering device comprises a box body, a distribution disc and a disconnecting link; the matching disc is connected with the box body in a sliding way; the distribution plate is provided with an instrument epitope, a wiring terminal, a grounding terminal, a mutual inductor, a circuit breaker and other parts, and the box body effectively protects the wiring parts. The temporary power demand is met, the tedious opening procedure is fully reduced, and the repeated utilization rate of instruments, accessories and wires is improved.