重锤

When the moment made by material on turning plate is greater than that of heavy hammer and rocker, the disc will open adown to discharge. After discharge the moment made by heavy hammer and rocker will drive disc close quickly to realize locking air. Because the structure of valve is two-layer, there is always one disc in pipe that is in close condition. So it can discharges and lock air at the same time.

即当作用于翻板上的物料产生的力矩大于重锤摇杆产生的力矩时，阀板打开卸灰，一旦积灰卸去后，重锤与摇杆产生的力矩使阀板迅速关闭，实现锁气是由于本阀采用的是双层结构，因而使管道上阀板始终有一个是关闭状态，可使卸灰与锁气同时达到目的。

This paper examines the soil characteristic and liquefaction degree of hard shell seams at the subaqueous delta of the Yellow River. Four typical areas were chosen for measuring, testing and studying. The hard shell seam strength was measured by in-situ Proctor penetrometer. Undisturbed soil sample of 1 m long was excavated for laboratory soil property test. Sledge hammers were dropped down freely to hit the load board to simulate the wave force acted on the hard shell seam. The excess pore pressure and strength variation were observed. The liquefaction depth of the hard shell seams at four study areas under different wave storms were calculated by theory.

为揭示黄河口水下三角洲硬壳层的土性特征和风浪作用下的液化破坏状况，选择典型研究区，在现场利用普氏贯入仪测试硬壳层的强度特征，原位取1m原状样进行室内土工试验；利用重锤锤击荷载板的方式模拟波浪对硬壳层的动力作用，通过孔压探头和普氏贯入仪实时监测土体内孔压和振动前后强度的变化；通过理论计算研究硬壳层在不同风浪等级下的液化深度。

Every wind up full the clock can work 7 days, this time the hammer drop at the bottom, Need wind up once again, to the hammer rise again.

每上足一次发条，时钟走时大于7天，此时重锤，落到最低位置。需要重新上足发条，将重锤升起。

The valve is mainly made up of body, disc, axle, rocker and heavy hammer etc. It realizes discharging and air locking using trimming moment.

重锤锁气翻板卸灰阀主要由阀体、阀板、阀轴、摇杆、重锤等零件组成，利用力矩平衡的方法实现锁气卸灰。

The research of the utility and safety of the hammer was performed. The affecting factors of pile-soil system to the results of dynamic load testing were also analyzed. The results show that there is no tensile force in hammer during impact and it is feasible to utilize the hammer in drilling piles dynamic testing. Drop height, stiffness of cushion, pile length and diameter, and the soil qualities etc. affect the dynamic load testing results considerably.

研究结果表明：锤体冲击过程中基本不受拉力，符合试验要求；特大型组合式基桩高应变动力试桩重锤应用于灌注桩承载力检测是可行的；锤重、落距、桩径、桩长、土阻力分布、桩侧及桩端土弹限、锤垫刚度和力脉冲宽度等因素对检测承载力均有较大影响。

Lever safety valve rod through the hey hammet the lever on the location or change the weight of hey hammer to adjust the take-off pressure.

杠杆杆式安全阀是通过重锤在杠杆上的位置或改变重锤的重量来调整起跳压力。

Spring-loaded safety valve spring is delivered to the valve on the container or force to balance the pipeline pressure by adjusting the elastic springs to balance the medium on the pressure valve control media pressure to achieve the objective of safety valve lever weights Is to use a heavy hammer through the transmission lever to force the valve to balance the pipe or container medium pressure by adjusting the weights of the valve to balance the role of media from the valve on the pressure, media pressure to achieve the purpose of control ; Pilot of the main safety valve by valve components and sub-valve, to promote the role of Vice valve main valve action, also known as the pulse safety valve.

弹簧式安全阀是利用弹簧传递到阀瓣上的作用力来平衡容器或管道内压，通过调节弹簧的松紧来平衡介质对阀瓣的压力从而达到控制介质压力的目的；杠杆重锤式安全阀是利用重锤通过杠杆传递到阀瓣上的作用力来平衡管道或容器内介质的压力，通过调整重锤对阀瓣的作用距离来平衡介质对阀瓣的压力，从而达到控制介质压力的目的；先导式安全阀是由主阀和副阀组成，借副阀的作用带动主阀动作，又称为脉冲式安全阀。

A heavy, long-handled hammer used especially to drive stakes, piles, or wedges.

长柄重锤一种长柄的重锤，用于打桩、打楔

Mallets should be smooth and level, weight, and in each of the mallets on the plane marked with the actual weight of a heavy hammer markings.

重锤应光滑平整、重量准确，并在每个重锤的上平面标有重锤的实际重量的标记。

Heavy hammer ; pile ; soil ; high strain ; impulse response ; heavy hammer and low strike

重锤；桩；岩土；高应变；冲击响应；重锤低击

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。