9results about How to "Extended test time" patented technology

This invention discloses a planar spiral spring fatigue testing machine, comprising a base, a mounting seat fixedly mounted on the base, a reducer fixedly mounted on the mounting seat, a servo motor fixedly mounted at the rear of the reducer, and mounting brackets symmetrically mounted on the left and right sides of the mounting seat. Each mounting bracket is equipped with a rotatable rotating shaft. The output shafts at both ends of the reducer are nested and fixedly connected to the rotating shafts on the mounting brackets, and the rotating shafts on the mounting brackets are arranged symmetrically front to back. In this invention, the rotating shafts on the mounting brackets are arranged symmetrically front to back and have positioning grooves, so that the spiral springs to be tested are symmetrically installed. After one end is placed, the other end needs to be rotated 180 degrees counterclockwise. The servo motor drives the reducer to rotate, and the reducer and rotating shafts rotate together, causing the spiral springs to rotate. The spiral springs at both ends rotate in the same direction, and the forces on both sides cancel each other out. The torque of the servo motor can be smaller, making it more energy-efficient and effective.

The present invention discloses a method for designing a horizontal test flange of a direct-drive generator, and relates to a method for designing a test flange. The test apparatus includes a horizontal test, a direct-drive wind turbine generator, and a horizontal test flange, wherein the upper end face of the horizontal test flange is connected to the fixed axis of the direct-drive generator by bolts, and the lower end face of the horizontal test flange is connected to the horizontal test bench by bolts. Only the basic test parameters of the generator and the test bench need to be obtained to obtain the optimal height of the flange. Compared with the prior art, the present application can calculate the size of the required test flange according to the relative positions of the test bench, the generator, and the flange, and the sizes of the test bench and the generator, and can quickly design flanges that are suitable for different test benches and generators, thereby accelerating the test time and improving the test efficiency.

The utility model discloses a chain saw brake testing arrangement, include: frame body subassembly, adjusting assembly and testing assembly, adjusting assembly includes: vertical mechanism, transverse mechanism, longitudinal mechanism and adjusting plate, vertical mechanism is located on frame body subassembly, the output of vertical mechanism is connected transverse mechanism, the output of transverse mechanism is connected longitudinal mechanism, the output of longitudinal mechanism is connected adjusting plate, testing assembly is located on adjusting plate, testing assembly includes: pendulum mechanism, positioning mechanism and reset mechanism, pendulum mechanism is hinged with adjusting plate, positioning mechanism is used for fixing pendulum mechanism at the height of setting, when testing, positioning mechanism lowers pendulum mechanism, reset mechanism is used for the pendulum mechanism after testing resets. The utility model can reduce the time of testing assembly position adjustment, improve the testing time of chain saw, improve the production efficiency of chain saw.

The utility model discloses a resistance testing device for a self-recovery fuse, which relates to the technical field of fuse testing, comprises a testing device, and is technically characterized in that the testing device comprises a self-recovery assembly which is internally mounted, and the self-recovery assembly comprises a pressing block, a compensator and a recovery spring, the fuse resistance test device has the advantages that the fuse resistance test plays a role in opening and closing, the whole interior of the pressing block is made of a rubber material, the pressing block is made of a rubber material, the pressing block is made of a rubber material, the pressing block is made of a rubber material, and the pressing block is made of a rubber material. The internal part of the testing device is disconnected when the rubber material is connected with the lead wire, and on the contrary, the testing device can be restarted by using the compensator, so that a self-recovery effect can be achieved when the fuse resistance is tested, the mode of one-time resistance testing is reduced, and the testing cost is reduced.

The invention discloses a coating method of a high-strength fastener, which comprises a pre-process and a post-process, the pre-process comprises cleaning, shot blasting, alkaline cyanide-free galvanizing, washing, passivating, washing, sealing and spin-drying, and the post-process comprises cleaning, shot blasting, alkaline cyanide-free galvanizing, washing, passivating, washing, sealing and spin-drying; the post-process comprises the steps of coating, pre-drying, sintering, secondary coating, pre-drying, sintering and blanking. The method has the advantage that the corrosion resistance is improved.

The invention discloses a production communication test method for a LoRaWAN electric meter. The method comprises the following steps: S1, placing a LoRaWAN gateway on one side of an electric meter rack and keeping a power-on state; s2, connecting the LoRaWAN gateway with a computer through a network cable, placing a plurality of ammeters needing production communication testing on an ammeter rack, and connecting the ammeters with the computer through a serial server; and S3, the computer carries out production communication test on the plurality of electricity meters on the electricity meter rack at the same time. According to the production communication testing method for the LoRaWAN electric meter, batch testing of lorawan electric meters can be rapidly completed, the production testing time is shortened, the testing accuracy is improved, and the signal value of each lorawan radio frequency circuit can be rapidly measured and uploaded to a computer for judgment.

The utility model relates to the technical field of fastener test, and discloses a fastener transverse vibration test device, which is characterized in that the right side of the top of a base is fixedly connected with a fixed plate, the output end of a servo motor is fixedly connected with a turntable, the surface of the turntable is rotatably connected with a swing arm, the left side of the swing arm is rotatably connected with a connecting rod, and the connecting rod is fixedly connected with the fixed plate. A connecting seat is fixedly connected to the left side of the top of the base, a sliding rail is fixedly connected to the top of the connecting seat, a sliding block is slidably connected to the surface of the sliding rail, a test board is fixedly connected to the top of the sliding block, a mounting groove is formed in the middle of the test board, and a mounting seat is slidably connected to the interior of the mounting groove. Through cooperative use of the installation grooves, the installation seats and the like, a plurality of installation seats can be prepared in advance, then fasteners to be tested are distributed and installed on the installation seats, during testing, only the installation seats need to be placed in the installation grooves in sequence, use by workers is facilitated, the testing time is shortened, and the testing efficiency is improved.

This invention discloses a non-mechanical liquid crystal optical phased array (U-PHI) high-speed measurement system and method. The system includes: a laser, a polarizer, a liquid crystal optical phased array under test, a quarter-wave plate, a first depolarizing beam splitter, a second depolarizing beam splitter, a 135° polarization direction analyzer, a 45° polarization direction analyzer, a polarizing beam splitter, four photodetectors, a DSP signal processing module, and a main control terminal. The method of this invention, based on a small number of waveplates, optical crystals, and unit photodetectors, realizes a simple, low-cost, and highly controllable non-mechanical liquid crystal optical phased array (U-PHI) high-speed measurement system. It also achieves one-click U-PHI testing of liquid crystal devices, completing one test in 1ms, improving testing time and accuracy, greatly reducing human error caused by individual differences, and facilitating system integration, miniaturization, lightweighting, and low power consumption. This accelerates batch testing and quality assurance of mass-produced products in the liquid crystal device industry and is suitable for mass production equipment.

This invention discloses a document layout analysis method based on object detection and keypoint detection, comprising: Step A: acquiring a color document image and labeling the document image; Step B: extracting feature information from the color document image to obtain coded features; Step C: adding a coordinate width loss function to the loss function to calculate the loss of image features and corresponding label information; Step D: predicting the result of the document image using object detection and keypoint detection algorithms, including title coordinates, content coordinates, and the coordinates of keypoint information corresponding to the content coordinates, to obtain the text line boxes of the content column and the title column, as well as the keypoint positions corresponding to the content column; Step E: using a character recognition algorithm to perform full-page text line recognition, and outputting full-page recognition information in a structured manner based on the relationship between the title column and the corresponding content column obtained in Step D.