窗帘卷绳器

Unmanned aerial vehicle parking platform

The invention relates to the technical field of parking platforms, in particular to an unmanned aerial vehicle parking platform. Comprising a platform assembly, a righting assembly, a clamping assembly and a connecting assembly, the clamping assembly comprises a clamping motor set, a rack positioning block, a transmission gear, a rack set, a rack guide block and a turnover rod set, the connecting assembly is used for connecting the platform assembly with a mobile device, and the righting assembly is used for adjusting the falling position of the unmanned aerial vehicle. The platform assembly provides installation conditions for the righting assembly and the clamping assembly and is used for parking the unmanned aerial vehicle, the clamping assembly is used for clamping and fixing the unmanned aerial vehicle, and parking of the unmanned aerial vehicle is achieved. And under the action of the transmission gear, the turnover rod combination can be driven to turn upwards to press on the foot ...

Webpage file processing method and device

The embodiment of the invention provides a webpage file processing method and device.The method is applied to a client side and comprises the steps that a packaged file, mapping information and customization information of a target webpage are obtained; wherein the packaged file is obtained by packaging a plurality of code files of a target webpage by the server, the mapping information comprises a mapping relationship between each code snippet in the packaged file and a first path, and the customized information comprises a second path; for any code snippet in the packaging file, after the code snippet is operated, matching a first path of the code snippet with a second path in the customized information; and determining whether to replace the operation result of the code snippet based on the matching result. Through packaging processing, the opening speed of the webpage is increased; the operation result is dynamically replaced during operation, the influence of damage of a directory ...

Injection-production well of gas storage

The invention relates to the technical field of gas storage injection and production, in particular to an injection and production well of a gas storage, which comprises a first technical casing, a second technical casing, a third technical casing and a fourth technical casing. The second technical casing pipe is inserted into the first technical casing pipe, and the bottom of the second technical casing pipe is located in the cover layer bottom; and a production casing assembly suspended in the second technical casing to be located in the reservoir for collecting or injecting gas. According to the arrangement, the cover layer is completely packed through the first technical casing and the second technical casing, leakage is avoided, the sealing performance is guaranteed, the injection and production efficiency is improved, economic losses are avoided, pressure systems of the cover layer and the reservoir are different, after the cover layer is packed, targeted drilling can be conducted ...

METHOD FOR CUTTING QUARTZ GLASS PRODUCT USING LASER WITHOUT CONTACT AND DEVICE THEREOF

Disclosed is a method for cutting a quartz glass product using a laser without contact and a device thereof. The method specifically is: burning the quartz glass product being with a laser beam emitted by a laser generator to form a broken pipe groove, and then cut the quartz glass product with a pneumatic device. A device for cutting a quartz glass product provided by the present invention comprises an automatic laser cutting device and a pneumatic device. The laser cutting method and device provided by the present invention can ensure the product quality, decrease breaks, ensure the consistency between a cutting nozzle and a stick cross section, reduce wastes, and make operations safer. The laser cuts a quartz glass pipe or quartz glass stick without contact, which can improve the pipe and stick pulling speed, decrease the production cost, reduce labor intensity of workers, and improve the yield.

Book borrowing desk for library

The invention belongs to the technical field of reading desks, and relates to a library book borrowing desk which is characterized by comprising a desktop, magnetic attraction type storage boxes, a transmission belt and a storage box, six return cavities are symmetrically formed in the desktop, reinforcing ribs are fixedly arranged on the end face of the bottom end of the desktop, and the two magnetic attraction type storage boxes are symmetrically arranged on the reinforcing ribs; a return cavity is formed in the magnetic type storage box and communicated with the magnetic type storage box, a motor wheel is arranged in the magnetic type storage box, a transmission belt is arranged on the motor wheel in a friction transmission mode, and six storage boxes are placed on the transmission belt. Through the design of the table top, the magnetic type storage box, the transmission belt and the storage box, borrowed books can be returned through the storage box, meanwhile, the storage box is driven ...

Grading pressure relief device

The invention relates to a graded pressure relief device and belongs to the technical field of pressure relief equipment, the graded pressure relief device comprises a high-pressure pump, a liquid tank and a multi-stage pressure relief pipeline, the liquid inlet end of the high-pressure pump is communicated with the liquid tank through a liquid inlet pipe, the liquid outlet end of the high-pressure pump is connected with a liquid outlet pipe, and the liquid outlet pipe is sequentially provided with a plurality of pressure relief valves in the liquid flow direction; by the adoption of the structure, the pressure of liquid output by the high-pressure pump is controlled in a staged mode by arranging the multi-stage pressure relief pipelines, and therefore the requirement that the high-pressure hydrogen production equipment needs to make pressure changes meeting requirements when meeting different pressure requirements can be met; damage caused by overweight load of an injection device in equipment ...

Living pig counting and multi-target tracking method based on convolutional neural network

The invention belongs to the technical field of intelligent breeding identification and monitoring, and particularly relates to a living pig counting and multi-target tracking method based on a convolutional neural network, comprising the following steps: S1, acquiring a pig herd image and preprocessing the image; s2, inputting the preprocessed pig herd picture into a preset pig counting network based on YOLOv5; s3, taking the intersection-union ratio of the pig target detection frame and the tracking frame of the pig counting network as input, and tracking the pigs through a preset DeepSort-based pig target tracking network; and S4, counting the motion distance of the tracked pigs, and judging the health condition of each pig according to the counted motion distance of each pig. According to the method, individual segmentation and monitoring of the pig group can be accurately carried out in the pig group under the conditions of crowding, adhesion, shielding and the like, so that the pig ...

Unmanned patrol car ground-air cooperation system and control method

The invention relates to the technical field of unmanned vehicles, in particular to an unmanned patrol vehicle ground-air cooperative system and a control method, and the system comprises a vehicle-mounted differential base station, a parking platform controller, a cooperative controller, a positioning antenna, a vehicle-mounted radio station, an unmanned aerial vehicle, an unmanned vehicle, a parking platform, a communication antenna, a portable radio station, and an operation terminal. After receiving the target information, the unmanned aerial vehicle performs reconnaissance on a target, and after a suspicious target is reconnoited, the unmanned aerial vehicle performs photographing and uploads target picture information and position information to the operation terminal, and an operator makes a decision according to a target picture and position information returned by the reconnaissance target; and if the unmanned vehicle needs to be driven out and dispose the target, the operator ...