43results about How to "Guarantee the same" patented technology

The invention discloses a four-engine propeller aircraft wind tunnel test model based on air motors. One end of a supporting member is fixedly connected with a wind tunnel balance rack, and the otherend is connected to a main balance by means of a supporting rod connection member and an air bridge. Empennage and aerofoil assemblies are installed on an aircraft body, the middle section of the aircraft body is fixedly connected to balance connection members, the other end of each balance connection member is fixedly connected to the main balance, and a whole aircraft acting force is transmittedonto the main balance by means of the balance connection members. Flaps and ailerons are connected with an aerofoil stabilizing plane by means of respective angle changing pieces. A force and momentof a propeller are measured in real time by means of a rotating shaft balance during a wind tunnel test. A flow control device is installed in the aircraft body, and controls output power of the air motors by controlling gas flow. The invention provides a design method of the wind tunnel test model using the air motors for simulating power of the propellers, the flow field similarity degree in thepropeller power simulation tests is improved, and the data precision of wind tunnel tests is effectively improved.

Disclosed is a method for testing a residual stress of a welding joint based on a three-dimensional optical measurement technology and a contour method. The method comprises the following steps: performing pre-processing before welding; after welding, performing cutting perpendicular to a cross section of a weld on a welding test plate, and performing XJTU-OM capturing on the cut test plate to obtain calculated measurement point cloud data; marking two cut planes as cutting faces A and B; performing preliminary de-noising fitting on the measurement point cloud data by adopting a Geomagic-qualify extruded scanning data band width to obtain an primary de-noised point cloud; performing de-noising on the primary de-noised point cloud obtained in the step3 according to a mean value of grid sizes by MATLAB, interpolating contour data between points to obtain fitting contours of the cutting faces A and B; performing mirroring on a fitting profile of the cutting face A measured by XJTU-OM, then performing point-by-point averaging on the two cutting faces A and B, generating a model with a displacement deviation by MATLAB for final elasticity calculation; and performing stress calculation and analyzing. The present invention has advantages of having important theoretical and engineering values for testing the residual stress of a weldment.

The invention relates to a method for testing multiple welding residual stress components via a three-dimensional optical contour method. Pretreatment is carried out before welding; and after welding, a low speed wire is used to cut a tested plate for multiple time, the primary cutting direction is vertical to the weld seam direction of the test plate, and cutting is carried out along the middle cross section. XJTU-OM scanning is carried out on cutting planes of the test plate, and calculated measurement point cloud data is obtained; and an established data processing platform is used to carry out positive conversion, de-noising, displacement calculating, discretion, and boundary condition output on the point cloud data. The stress is calculated and analyzed to obtain vertical residual stress distribution of primary cutting. The secondary cutting direction is vertical to the first cutting direction and along the middle cross section, the same scanning and data processing are carried out on the cutting surface contour after secondary cutting, the stress is calculated by taking the secondary cutting plane contour data as boundary conditions, and stress elasticity calculation of the secondary cutting plane is realized. Thus, the method has theoretical and engineering significance in testing the multiple residual stress components of a welding member.

The invention belongs to the field of bridge monitoring and particularly relates to a system and method for continuously monitoring bridge deformation through foundation radar. The system comprises concrete piers (3), fixed supports (2) and foundation radar instruments (1), wherein each concrete pier (3) is fixed to a foundation, each fixed support (2) is connected with the corresponding concrete pier (3), and each foundation radar instrument (1) is connected with the corresponding fixed support (2). Each foundation radar instrument (1) is used for conducting interference-strategy measurement on a bridge (4). The foundation radar instruments (1), the fixed supports (2) and the concrete piers (3) are located between the bridge (4) and the foundation. By the adoption of the system and method for continuously monitoring bridge deformation through the foundation radar, the problem that an existing instrument can only monitor bridge deformation for once is solved, and the design basis stability of the instruments is achieved; through the method for continuous monitoring, an operator can continuously monitor a monitored target for a long time without arranging the instruments for a long time; the system is simple in structure and convenient to debug, and capable of continuously and accurately monitoring the health condition of the bridge.

The invention belongs to the technical field of test devices, and discloses a test device for testing performance of a water-lubricated bearing in a real environment. The test device comprises a loadsimulation module, a test shaft, a test water lubricated bearing, an environment simulation module and a measurement module, wherein the load simulation module comprises a torque output unit, a longitudinal load output unit and a lateral load output unit; the environment simulation module comprises a water circulation unit and a water flow control unit; the test shaft passes through the water circulation unit, and the measurement module is used to measure rotation speed and displacement of the test shaft and load and internal pressure distribution of the test water lubricated bearing. The testdevice of the invention can effectively simulate a real environment and a loading condition of the test water lubricated bearing during working. By the test device, the improvement on accuracy and practicability of design of the water-lubricated bearing can be achieved in case of inadequate consideration on different environmental factors during design of the water lubricated bearing.

The invention discloses a rootstock and scion support mechanism for automatic grafting, which comprises a scion support assembly and a rootstock support assembly; the rootstock support assembly is provided with a scion front bearing and a scion rear bearing; the scion front bearing and the scion rear bearing are respectively arranged on two sides of a moving seat; the rootstock support assembly isprovided with a rootstock front bearing and a rootstock rear bearing, the rootstock front bearing and the rootstock rear bearing are respectively arranged at two sides below the moving seat; the scion front bearing and the rootstock front bearing are connected with a driving part, and the scion front bearing and the rootstock front bearing are driven to move in the vertical direction. The rootstock and scion support mechanism for automatic grafting is used for supporting and positioning a rootstock and a scion in the operating process of a grafting machine so as to assist in completing the grafting and cutting operation.

The invention belongs to the field of communication technology, and discloses a long-distance wireless laser WIFI communication system and method. The system comprises a first digital optical transceiver, a first optical amplifier, a first wavelength division multiplexer, a first optical antenna, a second optical antenna, a second wavelength division multiplexer, a second optical amplifier, a second digital optical transceiver and a wireless router. The method comprises: transmitting information by using a wireless laser channel to replace a radio channel. The long-distance wireless laser WIFIcommunication system solves the problems that the WIFI signal coverage is small, the bandwidth is insufficient, the transmission security is poor, and the communication signal is susceptible to interference, resulting in signal instability in the prior art, the long-distance WIFI signal coverage is achieved, the wireless WIFI communication bandwidth is improved, and the communication signal is more stable, safer and less delayed.

The invention discloses an automatic filling, packaging and conveying production line for walnut oil production, and relates to the technical field of walnut oil production equipment. The automatic filling, packaging and conveying production line for walnut oil production comprises a workbench, a filling cabinet and a cover sealing assembly, foot stools are connected to the bottom of the workbench, a conveying belt is installed at the top of the workbench, and a conveying motor is connected to one side of the conveying belt; partition plates are fixed to the surface of the conveying belt, limiting blocks are installed on the two sides of the conveying belt correspondingly, and rotating shafts are connected into the limiting blocks. According to the automatic filling, packaging and conveying production line for walnut oil production, hydraulic push rods, the limiting blocks and a base plate are arranged in a matched mode, when the hydraulic push rods push the limiting blocks and the base plate to move, the distance between the two limiting blocks can be adjusted, and therefore the conveying belt can convey oil bottles of different sizes, a situation that the conveying belt is single in size of the oil bottles is avoided. A reset spring at the other end of the limiting block is matched to enable the limiting block to slide on the surface of the base plate to achieve fine adjustment, adjustment by workers is facilitated, and the practicability is improved.

The invention relates to the technical field of batteries, in particular to a mode clustering method of battery alarm characteristic data and an accident characteristic recognition technology. The method comprises the following steps: S1, collecting operation data of a battery before and after alarm in the operation of an accident vehicle and a normal vehicle; S2, performing dimension reduction processing on the operation data to obtain mode features; S3, performing clustering analysis on the mode features after dimension reduction to obtain classification features of the operation data; S4, analyzing the statistical difference between the accident vehicle and the normal vehicle according to the classification features; S5, judging whether the vehicle is an accident vehicle or not by taking the statistical difference as a standard. The method has the advantages that compared with the prior art, the judgment standard in the scheme is not single and fuzzy, the mode characteristics, the classification characteristics and the statistical difference are obtained in sequence by analyzing the operation data of the battery, the accident vehicle can be accurately identified, and the technical problem that the accident vehicle is difficult to accurately identify in the prior art is solved.

The invention discloses an MRI positioning measurement method of anteroposterior diameter and left-right diameter of ventriculus quartus cerebri of human bodies. On an MRI high-resolution image, a line parallel to the connecting line between the cross front edge and the rear linkage is drawn through the top of the ventriculus quartus cerebri and is used as a positioning line for reconstructing the cross section; a cross-section image is reconstructed on the positioning line; and the anteroposterior diameter and the left-right diameter of the ventriculus quartus cerebri are measured according to the cross-section image. The invention eliminates errors caused by inclination of heads of people to be measured, reduces the effect factors on the measuring result by measurement scanning personnel and improves the accuracy and the repeatability of the measuring result.

The invention discloses a cutter reciprocating type granulation machine, which comprises a packing auger, a packing auger installing tube, a double-edge cutter, a sieve plate, a push rod, a push block, a return spring, an elliptical push block and an electric motor, wherein the packing auger is arranged in the packing auger installing tube, the back end of the packing auger is connected with the electric motor through a packing auger rotating shaft, the sieve plate is arranged at the front end of the packing auger installing tube, a upper row of through holes and a lower row of through holes are formed in the sieve plate, the cutter surface of the double-edge cutter is arranged in a way of being tightly attached to the plate surface of the sieve plate, double edges of the double-edge cutter are respectively positioned at the top edge and the bottom edge of the double-edge cutter, the double-edge cutter is connected with the top end of the vertically extending push rod, the bottom end of the push rod is connected with the return spring fixedly arranged on the ground, the push block is fixedly arranged among the push rod, the return spring and the double-edge cutter, the push block ground is tightly attached to the elliptical push block in an epitaxy way, and the elliptical push block is connected with the electric motor through a push block rotating shaft. The cutter reciprocating type granulation machine has the advantages that powder materials are cut by the cutter, the shape and the dimension regularity of particles are ensured, the subsequent package is convenient, and the identical particle medicine content is ensured.

The invention discloses precision instrument polishing equipment which comprises a machine base (1), an upright pole (2), a support plate (3), a framework (4), a motion device, a first swirling power device, an instrument fixing device and a polishing cutter (11), wherein the upright pole (2) is fixedly arranged on the left side of the upper surface of the machine base (1) and comprises side plates (21) which are arranged in front and back; the support plate (3) is fixed at the upper end of the upright pole (2); a sliding rail bulging bar (22) which extends upwards and downwards is arranged on the inner sides of the side plates (21); the left side part of the framework (4) is arranged between the side plates (21) arranged in front and back; and the motion device comprises an up-down motion device (51) and a lead screw (5). The precision instrument polishing equipment has a compact overall structure, is low in production cost, is safe and reliable to use, and is stable to operate.

The invention provides a TBS determination method and related equipment. The method comprises the following steps: determining a first reference resource overhead; and determining a first transport block size (TBS) according to the first reference resource overhead, the first reference resource overhead comprising a reference resource overhead of second-level sidelink control information (SCI) and/or a reference resource overhead of a channel state information reference signal (CSI-RS). According to the method for determining the TBS provided by the invention, a terminal can determine the first reference resource overhead for determining the TBS, so that it can be ensured that the initially transmitted TBS and the re-transmitted TBS are the same, the terminal can perform data merging, and the reliability of data transmission of the terminal is improved.

The invention discloses a label capable of distinguishing a water bottle. The label comprises a label body; chamfers are arranged on the left side and the right side of the label body; a letter mark number area is arranged on the left side of the front surface of the label body; a pattern area and a digital mark number area are sequentially arranged on the right side of the front surface of the label body from top to bottom; adhesive tapes are arranged on the left side and the right side of the back of the label body; and transparent plastic films are arranged on the back surfaces of the adhesive tapes. According to the label, the letter mark number area and the digital mark number area are matched; the purpose of serial number marking is not to know how many bottles of water in one box but is to conveniently distinguish the bottles of water; the water bottles also can be ensured to be the same, and a proper amount of serial numbers can be ensured; if the serial numbers are excessivelyfew, repeated numbers can occur; if the serial numbers are excessively numerous, typesetting printing and identification are not convenient; by designing the pattern area, animal patterns are printedto distinguish the bottles, so that the bottles are convenient to observe and distinguish; and therefore, the effect of convenient distinguishing is achieved, and the problem that existing water bottles are inconvenient to distinguish is solved.

The invention relates to a curtain wall expansion joint node. The curtain wall expansion joint node comprises a left side curtain wall keel and a right side curtain wall keel, wherein an expansion joint is formed between the left side curtain wall keel and the right side curtain wall keel. The curtain wall expansion joint node is characterized in that aluminum alloy clamping grooves are formed in the opposite sides of the left side curtain wall keel and the right side curtain wall keel; expansion rubber strips are connected between the aluminum alloy clamping grooves of the left side curtain wall keel and the right side curtain wall keel; the two ends of the expansion rubber strips are arranged in the aluminum alloy clamping grooves respectively. The expansion rubber strip is formed by connecting a plurality of prisms and is made of an ethylene propylene diene monomer. An aluminum alloy cover plate is arranged above the groove bodies of the aluminum alloy clamping grooves. According to the curtain wall expansion joint node provided by the invention, a deformation joint of a curtain wall is guaranteed by adopting a manner of arranging the expansion rubber strip on the expansion joint; the installation is reasonable, the appearance is attracitve, and the surfaces of the curtain wall are uniform.