9results about How to "Lower height requirement" patented technology

The utility model relates to the technical field of column, concretely is a kind of adjustable column of large -scale injection molding machine, it includes: adjustable column, adjustable column is inserted in first through-hole, second through-hole and third through-hole, and fixed on fixed mould limit rod installation plug-in seat, and limit rod installation plug-in seat is opened in limit rod plug-in hole;Beneficial effect is: the end of the end of the one end of adjustable column originally inserted in first through-hole is moved to second through-hole, i.e. adjustable column can be adjusted and opened from the space between movable mould and fixed mould, so that injection mould can be directly moved from the side of injection molding machine body by hoisting equipment, so that when replacing injection mould, the hoisting time of injection mould is greatly shortened, the replacement efficiency of injection mould is accelerated, the height requirement of hoisting equipment is also reduced, and then the construction height demand of workshop is reduced, greatly save the construction cost of workshop.

This utility model provides a steel pipe pile assembly component and a steel trestle. The steel pipe pile assembly component includes a first sleeve, a second sleeve, and a partition plate. During assembly, two sections of steel pipe piles are respectively fitted into the first and second sleeves and then fixed with bolts. This avoids the series of processes involved in traditional welding operations, such as positioning, beveling, grinding, welding, and weld inspection, greatly improving installation speed. It also reduces the high requirements of traditional welding methods on the operating environment, enabling rapid construction even in complex environments such as the field, damp areas, and river channels. Unlike welding methods, it is not easily affected by human factors, leading to defects such as incomplete welds and cracks, resulting in better connection quality and stronger controllability. Furthermore, it avoids the disassembly difficulties associated with welding methods. After assembling the steel pipe piles using this assembly component, disassembly can be performed when necessary, facilitating the replacement of specific sections of the steel pipe piles or connecting parts, thus improving service life and maintenance efficiency.

The novel wind driven generator comprises a support, the support is composed of a cabin, a yawing cabin and a plurality of pipe bodies used for connecting the cabin and the yawing cabin, the cabin and the pipe bodies are fixedly connected in sequence, the pipe body at the topmost end is rotationally connected with the yawing cabin through a bearing, a fan blade shaft is rotationally connected into the yawing cabin, and the fan blade shaft is rotationally connected with the yawing cabin through a bearing. One end of the fan blade shaft penetrates through the yaw cabin and then is fixedly connected with fan blades, a transmission shaft penetrates through the yaw cabin, the pipe body and the cabin, and a generator set is installed in the cabin; the generator set is installed in the cabin located at the bottom end of the support, during installation and maintenance, a crane does not need to be used for hoisting the generator set to the high altitude of tens of meters, the safety and maintenance difficulty of the generator set in the wind driven generator can be effectively reduced, the weight of the top end of the wind driven generator is effectively reduced, and the cost is reduced. Therefore, the requirement of the wind driven generator for the height of the tower pole is reduced, and the production cost of the wind driven generator is saved.

The utility model relates to a kind of grain barn inner circulation uniform temperature ventilation system, including grain barn and the center pipe being set in the middle part of grain barn, further including ventilation pipe, upper air collecting chamber, lower air collecting chamber, ventilation ground groove, center ventilator and uniform temperature fan;Ventilation pipe is fixedly arranged on the lateral wall of center pipe;Upper air collecting chamber is communicated with the upper end of ventilation pipe;The air supply pipeline of center ventilator and uniform temperature fan is all communicated into upper air collecting chamber, center ventilator and uniform temperature fan extract air from the top inside grain barn, then output into upper air collecting chamber, lower air collecting chamber is communicated with the lower end of ventilation pipe;Ventilation ground groove is opened in the bottom of grain barn, and ventilation ground groove is communicated with lower air collecting chamber, so that uniform temperature airflow can be vertically downward along ventilation pipe and reach lower air collecting chamber and ventilation ground groove located in bottom, uniform temperature ventilation is carried out to grain from bottom to top, form inner circulation located in grain barn, avoid heat loss and energy efficiency reduction caused by long-distance transportation of traditional external air pipe, improve economy and environmental protection.

The invention relates to the technical field of spacecraft supporting devices, and discloses a freight aircraft support which comprises an upper connecting cylinder, a cylinder body, a lower connecting cylinder and a loading platform. The upper connecting cylinder is located at the top of the cylinder body and connected with the cylinder body, and a first opening is formed in the upper connecting cylinder and used for containing the tail of the freight aircraft; a second opening is formed in the side wall of the barrel, and a through channel is formed between the first opening and the second opening; the lower connecting cylinder is located at the bottom of the cylinder body, connected with the cylinder body and used for being connected with a carrier rocket. The loading platform is located in the barrel and located below the through channel, one end of the loading platform is connected with the barrel, and the other end of the loading platform is used for being connected with a carrier rocket. The present invention can improve loading convenience and separation reliability.

The application discloses a liquid tank structure of a rolling mill process system for a shallow pit, which comprises the liquid tank structure connected with the rolling mill process system, and the liquid tank structure comprises a dirty liquid tank, a clean liquid tank and a filter; the clean liquid tank is located at the upper portion of the inner cavity of the dirty liquid tank, and one side of the clean liquid tank is fixed with the upper portion of the inner wall of the dirty liquid tank; the bottom wall of the dirty liquid tank is communicated with the lower portion of the side wall of the filter through a filter pump structure; the bottom wall of the clean liquid tank is respectively communicated with the input end of the rolling mill process system through a jet pump structure and a process pump structure, and the bottom of the rolling mill extends into the dirty liquid tank through a liquid return pipe. The structure of the application is reasonable, the clean liquid tank is located at the upper portion of the inner cavity of the dirty liquid tank, that is, the clean liquid tank and the dirty liquid tank are arranged in a top-down mode, which is beneficial to reducing the volume of the whole structure, reducing the height requirement of the clean liquid tank and the dirty liquid tank respectively, improving the construction efficiency, reducing the construction cost, greatly reducing the construction danger, and is suitable for wide application and good in practicality.

The invention discloses an unmanned aerial vehicle-mounted methane sampling and quantifying method and system, and belongs to the technical field of gas pollutant detection. The unmanned aerial vehicle-mounted methane concentric circle sampling and quantification method is realized based on the tunable laser detection technology, a grid package emission area is sampled and measured by adopting a concentric circle closed sampling method, and compared with other sampling methods, the non-dominant air methane flux is not easy to miss calculation, and the sampling accuracy is improved. According to the method, the sampling precision and stability are further improved, the tolerance to wind direction changes and headwind errors can be improved, the method can be suitable for the situation that the wind direction is unstable, the quantification precision of the methane emission rate is further improved, and compared with other similar unmanned aerial vehicle-mounted methane emission detection quantification methods, the method has the advantage that the quantification precision is improved. The relative error of the quantification precision is reduced by about 20%, and the high requirement of the unmanned aerial vehicle-mounted methane emission detection quantification method on the measurement climate condition is reduced.

The present disclosure relates to a scene feature extraction method, device, medium and electronic equipment, the method comprising: acquiring each environment object in a target environment, the environment object including a virtual character and an object in the target environment; for each environment object, determining the object type corresponding to the environment object; according to the object type of the environment object, collecting point cloud information of a target feature point of the environment object; and generating a feature representation corresponding to the environment object according to the point cloud information of the target feature point. In this way, when extracting features in a scene, different object types of environment objects can be based on their corresponding features for feature extraction, thereby improving the accuracy of feature extraction and the matching degree between environment objects. The point cloud information-based method can effectively reduce the data amount of the feature representation and accurately describe the environment.

The application discloses a tunnel air pipe winding device, which comprises a supporting seat, a rotating roller fixed on the supporting seat, end plates and exhaust valves fixed on both ends of the rotating roller, a pneumatic device comprising a fixed shaft and a spiral guide plate, the fixed shaft being rotatably connected with the end plates and the supporting seat, the spiral guide plate being fixed on the fixed shaft and abutting against the inner wall of the rotating roller, the end of the fixed shaft being in a hollow tubular structure and provided with a through hole, the first locking structure being arranged between the end plate and the supporting seat, the second locking structure being arranged between the fixed shaft and the supporting seat, and the third locking structure being arranged between the end plate and the fixed shaft, and a connecting pipe connected with the fixed shaft and a high-pressure air pipe. The device can drive the rotating roller to rotate by using the compressed air provided by the high-pressure air pipe, so as to realize the winding of the air pipe, reduce the manpower required for dragging the air pipe and improve the dragging efficiency of the air pipe.