Please select the most similar patent number from A, B, C and D. Which number is?
Provided are a high-altitude greening lifting device and system, which relate to the technical field of vertical greening. The high-altitude greening lifting device comprises a flexible hoisting belt, fixing assemblies, an anti-deviation rope, and flowerpots, wherein the flexible hoisting belt clamps several flowerpots in a lengthwise direction through the fixing assemblies respectively; the anti-deviation rope is successively connected, in the lengthwise direction of the flexible hoisting belt, to the several fixing assemblies; and the fixing assemblies are detachable. Through the high-altitude greening lifting device provided in the present invention, installation of a large-area support is avoided by means of the design combining the flexible hoisting belt and the flowerpots; the design of the anti-deviation rope avoids safety accidents caused by drifting of the flowerpots with wind during a lifting process, and improves the typhoon resistance capability; and the fixing assemblies are detachable, which facilitates spacing adjustment of the flowerpots according to user requirements or seasonal changes, thus meeting usage requirements of users. A high-altitude greening lifting system which uses the high-altitude greening lifting device is additionally provided in the present invention, and the stability of the entire system is improved by means of installing an upper support and a lower support.
A: A logistics lifting/lowering device and an operation method therefor. The logistics lifting/lowering device comprises a base plate (1); the bottom of the base plate (1) is uniformly provided with a plurality of shock-absorbing plates (4); omnidirectional wheels (5) are mounted on the shock-absorbing plates (4); one side of the top end of the base plate (1) is uniformly provided with a plurality of support rods (2); the top ends of all the support rods (2) are jointly fixedly connected to a top frame (3); a feeding mechanism (6) is mounted on the top frame (3); a mobile base (7) is mounted on the feeding mechanism (6); the bottom end of the mobile base (7) is fixedly connected to a lifting/lowering frame (8); a winch (10) is fixedly mounted on the bottom wall of an inner cavity of the lifting/lowering frame (8); a rotating shaft (11) is rotatably connected to the winch (10); an overhanging end of the rotating shaft (11) is fixedly connected to a wire roller (12); a rope (13) is wound around the wire roller (12); and a plurality of connection wires (14) are fixedly connected to a moving end of the rope (13). The whole hoisting or discharging process is automatically completed, such that the working intensity can be greatly reduced, quick operation can be conveniently realized, and the management efficiency can be improved; and because hoisting or discharging is completed by using a machine, the operation safety can be greatly improved, and the personal safety of a worker can be guaranteed.
B: Disclosed is a lifting device for aerial operations, comprising a vehicle body (5), a lower bracket (7) installed on a bottom part of a safety ladder (14), a host drive (9) fixed on the lower bracket (7) for providing lifting power, an upper bracket (1) installed on a top part of the safety ladder (14), a hauling cable (4) for connecting the upper bracket (1), the vehicle body (5) and the host drive (9), and a sliding rail (2) installed on the safety ladder (14); and further comprising an anti-dropping device (3) installed on the sliding rail (2), a guiding device assembly (12) installed on a rear part of the vehicle body (5), a stalling protection device (11) installed on the guide rail (2) and fitted with the vehicle body (5), a foldable pedal (6) installed on the lower part of the vehicle body (5) for loading people and commodities, an operation handle (13) fixed on the upper part of the vehicle body (5) and a limiting bracket (16) installed on an upper part of the safety ladder (14); wherein the vehicle body (5) is driven by the host drive (9) via the hauling cable (4) to move up and down along the guide rail (2), so as to realize the purpose of transferring people and commodities by moving the vehicle body up and down, and during installation, there is no need to change the original structure of the safety ladder.
C: The present invention relates to the field of engineering equipment, such as a marine wind power installation ship and a marine oil drilling platform, and in particular, to a lifting device for a marine platform and a marine platform. The lifting device comprises: a first beam body; a second beam body fixedly connected to the marine platform; a lifting drive member, the first beam body being connected to the second beam body by means of the lifting drive member; snap-fitting racks fixedly connected to pile legs; two snap-fitting devices, one of which is connected to the first beam body, and the other of which is connected to the second beam body, each snap-fitting device comprising a clamping block adapted to the snap-fitting rack, and the clamping block and the snap-fitting rack can be snap-fitted or separated. The marine platform comprises the described lifting device for a marine platform. The snap-fitting racks of the lifting device for a marine platform provided in the present invention are easily aligned and fitted with the snap-fitting devices, so that a hydraulic station and a hydraulic cylinder can be prevented from being in an operating state for a long time, thereby improving safety. The present invention also has a good effect in use in an environment with an uneven seabed.
D: A multifunctional flowerpot rack for an ecological garden, relating to the technical field of landscaping, and mainly resolving the problems, of a common flowerpot rack on the current market, of having a plain shape and a single function, and being able to hold only one flowerpot generally. A lampshade (1) is provided at the top end and is of a trapezoidal hollow structure; a bulb (2) is mounted on the surface of the hollow of the lampshade (1); a water outlet pipe (3) is of a crown structure; small flowerpots (4) are provided close to the top end of the flowerpot rack; large flowerpots (5) are mounted below the small flowerpots (4); the bottom end of the water outlet pipe (3) is connected to a water pump (6); the water pump (6) is communicated with a water pump pipe (8); a vine pot (7) is provided at the lowest end of the flowerpot rack. The flowerpot rack is suitable for the growth of various potted and vine plants, light emitted by the bulb (2) is reflected by the surface of the hollow of the lampshade (1) and thus is evenly scattered during usage, the light of the bulb is soft, heat emitted by the bulb may meet the needs of plants for temperature, the environment is beautified, and the flowerpot rack is also suitable for use as a garden lamp and saves planting space.
Answer: D