31 results about "Test weight" patented technology

The invention relates to a detection method of plated layer corrosion rate in a steel wire or a steel wire rope. The method comprises the process steps that: 1, a sample is prepared, wherein a plated steel wire or steel wire rope is cut into N segments; the surfaces are cleaned by using alcohol cotton; and the ends are sequentially sealed by using a solid sealant (AB composite adhesive), such that N samples are prepared; 2, the samples are weighed; 3, a salt spray test is carried out, wherein the weighed samples are subjected to a neutral salt spray test in a salt spray box; 4, the surfaces of the samples are cleaned, wherein the samples after the salt spray test are washed in a container with a prepared chromic acid cleaning agent, such that residual salt and corrosives on the surface of the samples are completely removed; the samples are washed by using water, and are dried; and 5, weighing and calculation are carried out, wherein the dried samples are weighed, and the weights are adopted as after-test weights; and the corrosion rate is calculated according to the weight loss before and after the test. With the method provided by the invention, corrosion-resistant rates of various plated layers can be easily determined, and the service lives of the plated layer samples in the environment can be inferred.

Disclosed is a surface aircraft stability whole-machine power model basin test method. The surface aircraft stability whole-machine power model basin test method comprises the test steps of a, installation of a whole-machine power model and a test device; b, installation of a data collecting device. Specifically, the method comprises observing and recording the motion state and the motion process of the whole-machine power model (1) under disturbance; during the test, recording the state of the whole-machine power model (1) as well parameters such as the angle of deflection of flaps, the angle of deflection of an elevator, test weight and center of gravity and test speed. After finishing the test, data analyzing personnel should perform comprehensive analysis on the collected data according to the collected data and test phenomena as well as validity evaluation on test data. The surface aircraft stability whole-machine power model basin test method has the advantages of being practical, feasible, simple in operation and reliable in test results.

A flow test machine 2 which, for example, is able to be used for viscosity tests on plastics, comprises a test piston 4, a test channel 38, at least one test weight 72 and a drive unit 92. The test piston 4 is able to move through the test channel 38 by means of a weight force 79 of the test weight 72. The test weight 72 is able to be loaded by an actuating additional force 108, 108′ by means of the drive unit 92 between a starting position 151 and an end position. The actuating additional force 108 enables a movement of the test piston 4 in the direction of the weight force 79, said movement being accelerated in comparison with an effect of the weight force 79. In a melt viscosity test, after a heating step, a thermoplastic plastic is pressed through a test channel 38 by a test piston 4. In a measurement preparation step and/or a cleaning step, the test mass is lowered along a weight force direction 79 under the influence of an actuating additional force 108, 108′. In a method for cleaning, a cleaning step is undertaken by means of an actuating additional force 108, 108′ from the drive unit 92, said drive unit 92 serving to drive a test piston movement during a melt viscosity test.

The invention provides a method for determining dissolving state and adsorption state of Cd (II) in mineral soil, and belongs to the field of soil analysis. The method comprises the steps: separating clay minerals from the soil, testing the CEC (cation exchange capacity) value and the specific surface area Ss of the minerals, testing acid-base constants (namely logK(+), logK(-) and logK(Na, H)) of the surface of the clay minerals, testing metal surface complexion constants (namely logK(AlOCd) and logK(X2Cd)) of the surface of the clay minerals, testing weight percentages of organic matters, iron oxide and clay granules in the soil, and constructing a full-soil model. According to the method for determining dissolving state and adsorption state of Cd (II) in the mineral soil, the problem that the states of Cd in the soil cannot be predicated is solved, the determination method for the state and the concentration of Cd in a soil system is created, and the method can be used for predicating the effective concentration of Cd in the mineral soil.

The invention provides auxiliary ammonia uniformity testing equipment and a testing method thereof. The testing method includes: firstly, testing weight of crystallization state test part of a postprocessing system of a diesel vehicle; secondly, performing a urea heat flow test; finally, testing a weight variation of the crystallization state test part again, testing ammonia concentrations of different positions of the crystallization state test part through the auxiliary ammonia uniformity testing equipment, and evaluating to obtain urea uniformity. The auxiliary ammonia uniformity testing equipment is capable of testing the ammonia concentrations of different positions of a tested object, and has the advantages of simplicity in operation, low failure rate, accuracy in test points and lowcost.

The invention provides a calculation method of on-line dynamic balance of a fan, and belongs to the technical field of dynamic balance of fans. The calculation method comprises the following steps of measuring an initial vibration vector, performing shutdown, adding a test weight, measuring a test weight vibration vector, dividing the weight of the test weight by the vibration magnitude of the test weight vibration vector to obtain a counterweight ratio of increase or decrease unit vibration quantity, determining the magnitude of a lag angle theta, measuring a target vibration vector of the same fan, obtaining the weight of a to-be-mounted balance weight by the vibration quantity in the target vibration vector, rotating the corresponding lag angle theta based on a phase angle in the target vibration vector to obtain a non-balance position point, performing rotation by 180 degrees at the non-balance position point to obtain a balance weight position point, and mounting the balance weight to the balance weight position point. The calculation method of the on-line dynamic balance of the fan does not require machine start or stop for many times; the time consumption of a dynamic balance experiment is low; and great manpower and material resources are saved.

The invention discloses a digital type tear strength tester which comprises an energy conversion mechanism for converting gravitational potential energy into kinetic energy, a clamping mechanism for clamping a test sample and a measurement mechanism for measuring energy loss, wherein the energy conversion mechanism comprises a swing device and a test weight; the test weight is hung on the swing device, and the swing device swings to convert the gravitational potential energy of the test weight into the kinetic energy of the swing device; the clamping mechanism comprises a movable part and a fixed part; the movable part of the clamping mechanism is connected with the swing device; the fixed part is fixed on a stander of the tester; under the action of the swing device, the movable part and the fixed part of the clamping mechanism are separated, so that the test sample clamped on the movable part and the fixed part is torn away; the measurement mechanism comprises an angle encoder; the angle encoder is connected with the swing device; and the swing device swings, so that the angle encoder reads an angle variable. The digital type tear strength tester has the advantages of simple structure, simplicity and convenience in operation, small test error, high test accuracy, high test efficiency and the like.

The invention provides a method for determining dissolving state and adsorption state of Pb (II) in mineral soil, and belongs to the field of soil analysis. The method comprises the steps: separating clay minerals from the soil, testing the CEC (cation exchange capacity) value and the specific surface area Ss of the minerals, testing acid-base constants (namely logK(+), logK(-) and logK(Na, H)) of the surface of the clay minerals, testing metal complexion constants (namely logK(AlOPb) and logK(X2Pb)) of the surface of the clay minerals, testing weight percentages of organic matters, iron oxide and clay granules in the soil, and constructing a full-soil model. According to the method for determining dissolving state and adsorption state of Pb (II) in the mineral soil, the problem that the states of Pb in the soil cannot be predicated is solved, the determination method for the state and the concentration of Pb in a soil system is created, and the method can be used for predicating the effective concentration of Pb in the mineral soil.

The invention discloses a rotor dynamic balancing method without weight removal, and belongs to the technical field of rotor dynamic balance. The rotor dynamic balancing method without weight removalprovided by the invention can achieve balance just by adding weights twice, eliminates a weight removal process, greatly improves balance precision, reduces balance cost, improves balance efficiency,and avoids accidents. The method comprises steps of a, installing a vibration sensor horizontally on a rotor bearing seat to acquire a vibration signal, attaching reflective paper to a rotor shaft, measuring a rotational speed signal by using a speed sensor facing the reflective paper, and measuring the amplitude and the phase of the unbalanced vibration of the rotor by a dynamic balancer; b, after a test weight is added, measuring the amplitude and the phase of the unbalanced vibration again; and c, solving the magnitude and the position of the unbalanced weight according to a formula, addingthe same correcting weight to an opposite side so as to greatly reduce the vibration and achieve balance.

The invention discloses a method and a system for testing the weight balance of a racket and a ball arm. The system comprises a test platform and an upper control host, wherein the test platform has a box body structure; the top of the box body is provided with a horizontal mounting surface; the horizontal mounting surface is provided with at least one head contact base and one tail contact base;the positions at which the head contact base and the tail contact base are arranged are opposite, and the top end faces of the head contact base and the tail contact base are positioned on the same horizontal plane; the bottom parts of the head contact base and the tail contact base are connected with pressure sensors; a control chip is arranged inside the test platform; and the control chip processes signals transmitted by the pressure sensors and outputs related data to the upper control host. The system has a compact structure, is convenient to use and has high automation degree. The weight and the balance points of objects to be tested can be acquired after the objects to be tested are arranged as required during operation, the weight distribution of measured parts can be displayed, the measurement speed is high, and the method and the system are suitable for testing mass products.

The invention discloses a load test device for a chain hoist. The device comprises a weight and a pit for placing the weight, wherein the bottom of the pit is provided with a weight bottom support, the middle portion of the weight bottom support comprises an upwardly disposed positioning rod, and the middle portion of the weight is provided with a positioning hole adapted to the positioning rod. The invention also discloses a load test method specifically comprising the following steps of (1) load test of a 0.5t chain hoist; (2) load test of a 1t chain hoist; and (3) load test of a 2t chain hoist. In the load test provided by the invention, the load test of 0.5t, 1t and 2t chain hoists can be realized by switching different hanging points, the weight utilization rate is high, the operationis simple and the work efficiency is high. By arranging the test weight in the pit, the safety factor is greatly improved.

The invention relates to a vertical compression resistance static loading test large base pile ground weight pile-loading method for civil engineering. The method is applied to vertical compression resistance static loading test weight counter force in civil engineering base pile detection. The method is executed according to the following steps that (a) weight platform buttresses are put up, (b) weight pile-loading hollow tank columns are hoisted on the weight platform, the first weight pile-loading hollow tank column and the axis line of a test pile are overlaid, other weight pile-loading hollow tank columns are hoisted around the first weight pile-loading hollow tank column are completely filled on the whole platform, and when the weight pile-loading hollow tank columns are hoisted, every two adjacent weight pile-loading hollow tank columns are fixedly connected through fixing pieces; (c) jumbo bags are hoisted in the first weight pile-loading hollow tank column, or the first weight pile-loading hollow tank column is filled with clear water, and around the first weight pile-loading hollow tank column, bulk jumbo bags are hoisted between every two adjacent weight pile-loading hollow tank columns sequentially, or clear water is filled between every two adjacent weight pile-loading hollow tank columns sequentially; and (d) a hydraulic jack between a weight platform main beam and the test pile is started to conduct detection.

The wheel wear resistance testing device provided by the present invention includes an electric control cabinet, a grinding wheel, a wheel fixture, a wheel up and down adjustment rod and a test weight. The inside of the electric control cabinet is provided with a motor, and the outside of the electric control cabinet is provided with a control panel. Control the speed and time of the motor, the rotating shaft of the motor is connected with the shaft of the grinding wheel; the wheel fixture is set above the grinding wheel, and the wheel fixture is connected with the wheel up and down adjustment rod through the connecting rod; the test weight is set on the platform of the electric control cabinet, and the test The heavy blocks are weight groups with different standard weights, each weight is provided with a through hole in the horizontal direction, and the weight is connected with the up and down adjustment rod of the wheel through a bolt inserted into the through hole. The invention can realize the adjustment of the angles of the wheels and grinding wheels separately, with simple operation and precise positioning; at the same time, parameters such as the wear quality of the front and rear of a wheel, the angle of the grinding wheel, the test weight, and the test speed can all be considered, so as to improve the detection ability of roller skates and improve the detection It is of great significance to level and guarantee the quality of roller skates on the market.

The invention provides a test weight method of lifting ladle for a large steel-making casting bridged crane, belonging to the technical field of converter steelmaking, in particular to a large casting bridged crane. Without adopting normal nacelle test weight method, the method adopts a test weight method of taking a plurality of ladle iron blocks as counterweights and comprises the following steps of: determining the quantity of the ladles and the weight of the iron blocks needed by each ladle; preparing for counterweight; checking before running-in of the crane; running-in at empty load; and testing on static load; and running-in at dynamic load. The method has the advantages of leading the test weight procedure to be simple and greatly reducing the measure costs of the test weights.