An installation transfers fluid between a source (e.g., a cryogenic fluid reserve) and a receiving unit (e.g., a boat reservoir). It includes a beam framework tower housing a fluid transfer circuit with a pipe extending from a lower connection to an upper connection. The tower is composed of at least two separable stacked modules, enabling different height configurations (two modules stacked or a single module). The transfer circuit within the tower has two sections, one in each module, connected by demountable connectors to adapt the circuit's height to the tower's configuration.

The present disclosure provides a boom comprising a frame structure, wherein the boom comprises: a top plate; a bottom plate, wherein the bottom plate and the top plate are oppositely disposed at an interval; a first side plate; and a second side plate, wherein the second side plate and the first side plate are oppositely disposed at an interval, wherein a first side of the top plate is provided with a first bending portion, and at least a portion of the first bending portion and a first end of the first side plate are attached and spliced to each other, a second side of the top plate opposite to the first bending portion is provided with a second bending portion, at least a portion of the second bending portion and a first end of the second side plate are attached and spliced to each other, and a first side of the bottom plate is provided with a third bending portion, at least a portion of the third bending portion and a second end of the first side plate are attached and spliced to each other, a second side of the bottom plate opposite to the third bending portion is provided with a fourth bending portion, at least a portion of the fourth bending portion and a second end of the second side plate are attached and spliced to each other, and define the frame structure. The present disclosure makes the boom more suitable for mass production by splicing out the boom, and the change cost is low compared to the integrally formed mold.

A working device and an arm support (100) thereof. The arm support (100) comprises a top plate (110), a bottom plate (120), and first and second side plates (130, 140). The top plate (110) and the bottom plate (120) are oppositely disposed at an interval. The first and second side plates (130, 140) are oppositely disposed at an interval. One side and an opposite side of the first side plate (130) are provided with a first and a second bending portion (134, 136), respectively. At least a part of the first and second bending portions (134, 136) are attached and spliced to the top plate (110) and the bottom plate (120), respectively. One side and an opposite side of the second side plate (140) are provided with a third and a fourth bending portion (144, 146), respectively. At least a part of the third and fourth bending portions (144, 146) are attached and spliced to the top plate (110) and the bottom plate (120), respectively. The working device is provided with a chassis, a pump tube and the arm support (100), and adjacent arm supports (100) are hinged to one another. The arm support (100) is suitable for mass production and has low costs.