An apparatus for connecting one or more guy wires to a down rod, the connector having first and second separable portions which form an aperture for receiving the down rod. At least one of the first or second portions includes at least one passage adapted for releasably receiving a portion of the guy wire. The guy wire may include an anchor, and the passage for receiving the guy wire may be adapted for capturing the anchor so as to preclude movement of the guy wire in a radial direction.

Pneumatically supported towers for low gravity applications are disclosed herein. In one aspect, an inflatable tower for use in vacuum environments can have a membrane configured to support a load when inflated with an inflation gas to a pressures less than 100,000 pascals and greater than 0.01 pascal. The inflation gas can be chosen to have a sufficiently low boiling temperature at the inflation pressure of the membrane that the gas will not condense to a liquid or solid within a defined range of temperatures in which the tower is designed to operate. The membrane can be configured to be packaged for transport in deflated condition and rolled onto cylinders from which the membrane can be later unfurled and inflated as part of the tower inflation process. The membrane can be further configured to progressively inflate beginning at a bottom or lowest level of the membrane during the tower inflation process. The membrane can be divided into a plurality of compartments by one or more diaphragms containing valves configured to regulate flow of the inflation gas between the compartments.

Pneumatically supported towers for low gravity applications are disclosed herein. In one aspect, an inflatable tower for use in vacuum environments can have a membrane configured to support a load when inflated with an inflation gas to a pressures less than 100,000 pascals and greater than 0.01 pascal. The inflation gas can be chosen to have a sufficiently low boiling temperature at the inflation pressure of the membrane that the gas will not condense to a liquid or solid within a defined range of temperatures in which the tower is designed to operate. The membrane can be configured to be packaged for transport in deflated condition and rolled onto cylinders from which the membrane can be later unfurled and inflated as part of the tower inflation process. The membrane can be further configured to progressively inflate beginning at a bottom or lowest level of the membrane during the tower inflation process. The membrane can be divided into a plurality of compartments by one or more diaphragms containing valves configured to regulate flow of the inflation gas between the compartments.

A training apparatus for fast-rope training includes a platform-supporting structure having one or more containers and at least one platform configured for use in fast-rope training. At least one attachment is provided for attaching a fast-rope. The platform-supporting structure is supportable by a surface. The at least one attachment is located higher than the platform and spaced laterally from the platform-supporting structure such that the at least one attachment overhangs the surface so a fast rope can hang from the at least one attachment, past the platform and toward the surface.

A method and system of additively-manufacturing a structure having a reinforced access opening includes printing, via an additive printing device having at least one printer head, a portion of the structure adjacent to a support surface. The portion of the structure is printed of a cementitious material, and the printed portion of the structure defines an access opening for the structure. Moreover, the method includes providing a void of the cementitious material at a top boundary of the access opening, placing one or more reinforcement members in the void such that the one or more reinforcement members extend across the void, and continuing to print the printed portion of the structure around the void to build up the structure. Thus, the method also includes backfilling the void with a backfill material to incorporate the one or more reinforcement members within the void into the printed portion of the structure.

A damper includes a vibration energy buffering transfer unit and a vibration energy dissipation unit. The vibration energy buffering transfer unit includes a plurality of piston transfer structures and connecting tubes, the piston transfer structures includes a cylinder and a piston arranged as a pair, the plurality of piston transfer structures surrounding the vibration energy dissipation unit, the connecting tubes inter-connecting the plurality of cylinders, the vibration energy dissipation unit includes a damping liquid accommodating cavity and damping liquid accommodated in the damping solution accommodating cavity, and one end of the cylinder or the piston being connected to the damping fluid accommodating cavity. The load-bearing enclosing structure provided with said damper can effectively suppress vibration.

A wind generator includes a revolving platform rotationally connected with a base; a tower body, where a bottom end of the tower body is connected to the revolving platform, a top end of the tower body is fixedly provided with a generator room, and a plurality of blades are rotationally connected to the generator room through a wheel hub; and the tower body is provided with at least one windward side in the circumferential direction of the tower body, and a bending stiffness of the windward side is not less than that of the remaining sides of the tower body; and a power source, where the power source is started when airflow is to the sides rather than the windward side to enable the airflow to flow to the windward side while the windward direction of the blades coincides with the airflow. A wind generator group is further provided.

The present invention provides a multi-utility signal transmission system with integrated modular units (103). The system (100) comprises an integrated base module (102) which is disposed on a base platform (101) and houses the electronic devices and/or equipment(s) which are required for ensuring optimum functionality of the signal trausmission system. The signal transmission system is built using a plurality of integrated modular units (103) which are stacked one above the other by means of linking points (104) wherein each integrated modular unit (103) comprises linking points (104) and mounting points (105) which enable the fitment of external peripheral devices. The system (100) provides a scalable, adaptable and modular solution for a multi-utility signal communication system to make it feasible, acceptable and relevant to cater to all the infrastructural needs of the signal communication industry and their surrounding establishments.

In order to make it easier to access an access unit (4) of a cableway support (1) of a cableway (2), according to the invention a climb-over apparatus (15) for persons to climb over from a cable car (7) of the cableway (2) onto the access unit (4) or vice versa is provided on the cableway support (1), wherein the climb-over apparatus (15) is positioned on the cableway support (1) by means of a fastening unit (21) so as to be movable relative to the access unit (4), wherein the climb-over apparatus (15) can be displaced relative to the access unit (4) from a rest position (RP), in which the climb-over apparatus (15) is stowed on the access unit (4), into a standby position (BP), which is provided for performing the climb-over action.

In order to make it easier to access an access unit (4) of a cableway support (1) of a cableway (2), according to the invention a climb-over apparatus (15) for persons to climb over from a cable car (7) of the cableway (2) onto the access unit (4) or vice versa is provided on the cableway support (1), wherein the climb-over apparatus (15) is positioned on the cableway support (1) by means of a fastening unit (21) so as to be movable relative to the access unit (4), wherein the climb-over apparatus (15) can be displaced relative to the access unit (4) from a rest position (RP), in which the climb-over apparatus (15) is stowed on the access unit (4), into a standby position (BP), which is provided for performing the climb-over action.