1726 results about "Vertical load" patented technology

The invention is a novel moment-resistant building column insert system for distributing lateral and vertical loads between the column-beam and column-foundation connections. Loads are distributed between the column and beam using a column insert, nut plates and beam end plates incorporated to beam-ends. The column insert is hollow and similar cross-section shape to the building column for inserting there to. The column, column insert, nut plates and endplates have patterns of mounting holes for receiving mounting bolts tightened to nuts held by nut plates. Loads are distributed between the column and foundation using a base plate, column insert, and insert plates integrated with anchor bolts, nuts and washers in a concrete foundation. The base plate having mounting holes is incorporated to the building column bottom end to receive the plurality of anchor bolts there through for fixedly tightening as an exposed end of the column insert fits in the column.

The invention discloses a true triaxial loading and unloading test device for large-size bedded pressure-bearing rock and a testing method. The device comprises a confining pressure loading module, a sample storage and water outlet module, a confined water loading module, a load loading module and a signal collecting and processing system, wherein the confining pressure loading module comprises two horizontal loading and unloading systems which are independent and perpendicular to each other and is used for performing horizontal load loading and unloading on the wrapped sample storage and water outlet module; the confined water loading module is located at the bottom of the sample storage and water outlet module and is used for performing confined water loading and unloading on the bottom of the bedded rock; the load loading module is located at the top of the sample storage and water outlet module and is used for performing vertical load loading and unloading on the top of the bedded rock; the signal collecting and processing system is used for collecting and analyzing signals in a test process. The test device realizes the true triaxial test of the bedded rock through four independent loading and unloading systems, truly simulates three-way anisobaric stress state of the coal-series bedded pressure-bearing rock and is more true and more reliable than a conventional triaxial test.

The invention discloses a device and method for measuring swelling representation parameters of swelling soil. The device for measuring the swelling representation parameters of the swelling soil comprises a sample container, a soil body permeation coefficient measurement part, a jacking cylinder applying a vertical load, a dial indicator for testing a swelling soil sample to generate vertical deformation, and a deformation pipe used for testing water seepage coefficients of the swelling soil. The method comprises the steps of: immersing the swelling soil sample into water for swelling stably, measuring the water seepage coefficients; and then electrically heating the swelling soil sample to ensure that the swelling soil sample is dehydrated and contracted stably, and measuring the permeation coefficients of the swelling soil. Therefore, the invention can be used for measuring water seepage and permeation coefficients of the swelling soil in a repeatedly-swelling deformation process by controlling temperature and water content changes of the swelling soil sample in the sample container so as to reflect the change of a fracture and a soil body structure inside the soil body of the swelling soil in the repeatedly-swelling deformation process. In addition, the sample container of the device is connected with an external pipeline through each joint arranged on the sample container, therefore, data measurement in an experiment process is facilitated, and measurement precision of data is increased.

The invention is a novel moment-resistant building column insert system for distributing lateral and vertical loads between the column-beam and column-foundation connections. Loads are distributed between the column and beam using a column insert, nut plates and beam end plates incorporated to beam-ends. The column insert is hollow and similar cross-section shape to the building column for inserting there to. The column, column insert, nut plates and endplates have patterns of mounting holes for receiving mounting bolts tightened to nuts held by nut plates. Loads are distributed between the column and foundation using a base plate, column insert, and insert plates integrated with anchor bolts, nuts and washers in a concrete foundation. The base plate having mounting holes is incorporated to the building column bottom end to receive the plurality of anchor bolts there through for fixedly tightening as an exposed end of the column insert fits in the column.

A box, preferably made from a unitary blank of material. The box has four interconnected sidewalls defining an open storage area that has a generally rectangular prism shape. Each sidewall defines at least a triple thickness of the material. The preferred material is corrugated paper or plastic.

An onboard system for determining the instantaneous weight and balance of an aircraft simply, reliably, accurately, and requiring a minimum amount of calibration includes a memory for storing previously determined breakout friction data of the aircraft's landing gear shock struts, sensors for sensing the pressures in the struts, the vertical loads exerted by the landing gear on the aircraft, and the attitude of the aircraft relative to the horizontal during loading or unloading thereof, and a computer for computing the vertical load in each of the landing gears from the stored calibration breakout friction data and the shock strut pressures, landing gear vertical loads and aircraft attitude sensed during the loading or unloading. The computer then computes the gross weight of the aircraft and the location of its center of gravity (CG) using the computed vertical loads in the landing gears.

A direct shear tester for both portable field test and indoor test and a sampling and testing method are provided. The tester comprises a sampling device, a portable vertical load system and a horizontal shear system. The testing method comprises burying a rigid frame together with a cruciform shear frame in the soil of a place to be test, digging out the whole soil containing the rigid frame and the cruciform shear frame to obtain an integrated sample with less interference, placing and fixing the integrated sample in a rigid frame base on a box-shaped frame, applying a vertical force by using the portable vertical load system on the box-shaped frame, and measuring the strength of the sample by using the shear frame. During the test process, the volume change of the sample in the vertical direction is not limited. The tester has simple structure, easy operation and good portability. The testing method employs flexible tension shear mode instead of the rigid top-bunt shear mode, overcomes the friction and sampling problems, and avoids the vertical pressure offset during the test process by using the portable vertical loading system, thereby increasing the test accuracy.

The present relates to an automatic insulin pump, which allows the rotary shaft only to rotate piston advancing means to remove vertical load applied to a rotary shaft, thereby improving durability thereof. The insulin pump includes: an injector having a syringe for containing insulin therein, and a piston inserted into the rear end of the syringe for providing the syringe with insulin discharge pressure; a housing having an injector receiving space formed in an appropriate position thereof, the injector receiving space having a partition wall formed at the rear end thereof; a rotary shaft having a non-circular section and a predetermined length; power supply means for rotating the rotary shaft at a predetermined speed; a push plate assembly for providing the piston with ahead power by pushing the piston, the push plate assembly having a disk part having a male screw formed on the outer circumferential surface thereof and a coupling hole axially coupled with the rotary shaft at the central portion thereof to allow for forward and backward movement of the rotary shaft, which passes through the coupling hole; and a hollow cylindrical type push plate case inserted into the injector receiving space of the rear end of the syringe, for the piston to pass therethrough, the push plate case having a female screw formed on the inner circumferential surface thereof to be coupled with the male screw of the disk part for allowing the disk part to carry out a spirally forward and backward movement.

The invention discloses a true triaxial rock loading and unloading disturbance test device. The device comprises a vertical loading device and a horizontal loading device, which are orthogonally distributed, wherein the vertical loading device is hollow; load cylinders are arranged on, below, in the front of and at the rear of the vertical loading device; pressure transfer pillars are arranged at the left and right ends of the horizontal loading device and are driven by the load cylinders to achieve six-side stress loading simulation of a specimen. The device has the beneficial effects that an unloading rockburst experimental method for suddenly unloading the single-side stress of the rock specimen and a loading rockburst experimental method for increasing the vertical load after single-side sudden unloading are obtained on the basis of the true triaxial three-direction six-side stress state.

The invention provides a plane type ejection launch carrier-borne aircraft front undercarriage static force test loading apparatus. The apparatus comprises a plane type test bench rack, an undercarriage, a lateral load loading device, a course load loading device, a vertical load loading device, an ejection load loading device, a hamper load loading device and a mooring load loading device. Based on a conventional loading technology, a set of loading equipment capable of applying ejecting, hampering and mooring loads is designed, and the vertical, course, lateral, ejection, hampering and mooring load loading of an ejection launch carrier-borne aircraft is finished on a single test bench, no replacement of tools is needed, all the loading points are fixed in the frame type test bench, a self-balance bearing system is formed when loading is performed, the bearing of the test bench is quite small, the fixation is facilitated, and the precision is high.

A rapidly-erectable lightweight load resisting system for the construction of buried arched bridges, tunnels or underground bunkers, has a plurality of lightweight arched tubular support members which are formed of a fiber reinforced polymer material and are substantially oriented in a vertical plane. The lightweight tubular support members are connected by at least one or more lateral force resisting members which are positioned in a direction perpendicular to the vertical plane of the tubular support members, and which are capable of transferring vertical loads to the tubular support members and of providing lateral-load capacity to the load resisting system. The tubular support members are fitted with one or more holes near the top which allows them to be filled with a suitable material to provide additional strength or stiffness.

A load detection structure in a vehicle seat with a support leg member, which includes a block member of rigid yet resilient recovery property and a strain gauge attached thereon. The block member is interposed between the seat and support leg member, such that a securing portion thereof is secured to the seat, whereas a pivotal end portion thereof is rotatably pivoted to the support leg member. The securing portion is displaced in a vertical direction due to a vertical load applied to the seat, while the pivotal end portion is rotated, so as to cause deflection in the block member, which is detected by the strain gauge. It may be so arranged that the block member is rotatable about its central axis, thereby being prevented against twist due to a lateral load applied to the seat. An auxiliary linkage is provided to insure preventing such twist of block member.

A key-board type input mechanism suitable for inputting large quantity of data is provided to a portable information technology device having a pen-input type display device. A keyboard (33 or 35) of the present invention comprises a key top panel portion (12 or 17) on which a plurality of input key portions (12a or 18) that are pressed down when carrying out a key input are integrally formed, a coordinate position information generating portion (13) and contact portions (16 or 19) for changing loads generated by pressing each input key portion of the key top panel portion down into a vertical load, a load distribution portion (14 or 20) for distributing unnecessary loads other than the vertical load changed by the coordinate position information generating portion and the contact portions, by deformation under a pressure. The key top panel portion, coordinate position information generating portion, contact portion, and load distribution portion are layered.

Standard test methods for determining one-dimensional consolidation properties of soils using incremental loading in accordance with ASTM D2435, or AASHTO 216, and of those of other international and organizations, do not accurately predict the values of vertical settlement, coefficients of consolidation in horizontal and vertical directions, and modulus of elasticity in vertical direction, because fixed ring used in these tests do not allow horizontal settlement and dissipation of excess pore-water pressures in horizontal direction, whereas, in field, under application of a vertical load, both horizontal and vertical settlements occur along with dissipation of excess pore-water pressures in both vertical and horizontal directions. To overcome this more than 100 year old problem, the inventor (Dr. Ramesh Chandra Gupta, Ph. D., P.E.) has invented a test device for determining three-dimensional consolidation properties of soils, using a flexible ring which permits development of horizontal and vertical displacements, and dissipation of excess pore-water pressures in both horizontal and vertical directions, along with increased lateral resistance as takes place in field at any depth in a soil deposit when vertical load at the surface is applied.The flexible ring consists of filter fabric around the soil specimen, rubber membrane around the filter fabric, circular segmental metal plates around the membrane and elastomeric rubber bands or spring loaded jacket around the segmental plates, and allows horizontal and vertical displacements, dissipation of pore-water pressures in horizontal and vertical directions to take place with increased lateral resistance with each increment of vertical load like those in the field. Thus new test device simulates field condition to allow accurate determination of three-dimensional consolidation properties of soils (such as settlements, coefficients of consolidation in horizontal and vertical directions, and modulus of elasticity).For this new test device, conventional incremental consolidation frame or triaxial type chamber system either with the triaxial loading system or modified to adapt to incremental consolidation frame, shall be used to perform three-dimensional consolidation tests.

A new and novel device for controlling a steering characteristic of a vehicle such as automobile so as to enhance an effect of suppressing a change in a behavior of the vehicle body due to a difference between driving and braking forces on the left and right wheels is characterized in that the device makes an amount of controlling the steering characteristic smaller as an index indicating an amount of a shift of vertical loads between the left and right wheels is increased. The steering characteristic is modified through controlling steering assist torque or a steering angle of the steered wheels. The steering assist by the steering control device is fully effective when the vehicle is running on a straight road having surfaces of different frictional coefficients while less effective on a curved road having a uniform frictional surface, preventing undesirable and unexpected modification of the steering characteristic during turning of the vehicle.

The invention discloses a multifunctional test bed for an electric wheel. The test bed comprises a power measuring motor, an electric push rod, a loading motor, an electric wheel equipped with a hud motor, a rotary drum, a rotating speed torque sensor, a pressure sensor, a ball screw mechanism, a parent controler (computer), an A / D & D / A card, and a USB / CAN adapter, whrein, the computer controls the rotating speed of the power measuring motor through the D / A card according to experimental operating conditions, the computer dynamically controls vertical load which is applied by the loading motor to the electric wheel through the D / A card according to the experimental operating conditions, the computer controls torque of the electric wheel r which is equipped with the hud motor through the USB / CAN adapter according to the experimental operating conditions, and the pressure sensor and the rotating speed torque sensor send load, rotating speed and torque signals of the electric wheel to the computer through the A / D card and a serial port respectively. The multifunctional test bed for the electric wheel can automatically assess durability of the electric wheel without monitoring in thelaboratory and without arranging special experimenter to carry out road test, and has the advantages of saving manpower and material resources, providing rapid and accurate assessment and the like.

The invention discloses a negative pressure osmosis test device which comprises a base, a soil sample ring, a porous permeable stone, a water storage container, an electronic balance, a vacuum pump, a pressure gauge and a sealed container, wherein the soil sample is arranged in the cylindrical soil sample ring, the upper end of a sample is connected with the water storage container, and the bottom end of the sample is connected with the sealed container and the vacuum pump; a pressure difference is formed at two ends of the soil sample through vacuum-pumping, and water seeps in the soil sample under the action of the pressure difference; an osmotic coefficient of the soil sample can be obtained through calculating the amount of water passing though the soil sample in unit time; a load applying piston at the upper end of the sample can apply vertical load so as to solidify the soil; osmosis tests of different solidifying pressures can be performed to simulate the seepage of the practical field soil under different stress environments; the osmosis test can be directly performed on the prepared soil sample. Therefore, the test device has the advantages of simple structure, convenience in use, quick and convenient test, and obviously shortened test time, and is particularly suitable for the osmosis test of low-osmosis soil samples.

An air spring device includes an air spring (4) wherein gas is filled in an interior defined by an upper face plate (1), a lower face plate (2), as well as a cylindrical flexible diaphragm body (3) having opposite ends gas-tightly connected to the upper and lower face plates (1, 2), respectively. Between the lower face plate (2) and a lower supporting plate (8) spaced downward therefrom, a shear spring means (5) and a compression spring means (6) are series-connected, which are made mainly of rubber material. When a vertical load is applied to the air spring device, the shear spring means (5) and the compression spring means (6) are subjected mainly to shearing deformation and compressive deformation, respectively. The air spring device further includes an abutment member (10) allowing the compression spring means (6) to support the load in place of the shear spring means (5), after the deformation amount of the shear spring means (5) reaches a predetermined level.

The invention discloses a multi-degree-of-freedom vehicle dynamics test platform which comprises a double-rod vertical loading hydraulic cylinder with an axial force sensor, a measurement and control system, a roller, a rotating disk, a position servo hydraulic cylinder, a six-degree-of-freedom Stewart platform, an outer rotor motor, a six-force-component sensor and the like. The use of the multi-degree-of-freedom vehicle dynamics test platform can simulate the changes of geometrical shape and mechanical properties of a road pavement and the incentive role of the changes to wheels, the exertion of any one-dimensional or multi-dimensional force in six-dimensional pavement incentive force on the wheels can simultaneously carry out pavement simulation, static load simulation and dynamic load simulation, and the wheels can change the direction relative to the roller, thereby realizing the simulation of large tire sideslip angle caused by turning of a vehicle, being capable of measuring steering angles of the wheels and six-dimensional force born on the wheels, carrying out better simulation and testing on the practical driving working status of the vehicle, realizing the comprehensive research of the multi-degree-of-freedom vehicle dynamics and providing the vehicle dynamics test platform with more excellent performances.

A mobility assistance apparatus for use by a person as a walking aid, e.g. a cane, crutch, or walker, improves the mobility of the person by providing a loading response shock absorption which stores energy and releases the energy to generate propulsive force to aid mobility. A device of the apparatus for ground engagement has a monolithically formed extrusion with foot, ankle and shank portions with improved spring rate gain. An upwardly extending, vertical load bearing support of the apparatus is connected to the device and flexes to absorb shock and store energy and then release it in ambulation to aid mobility. A set of various terrain foot slipper socks with different distal surface configurations for ice, snow and mud can be selectively used on the foot to enhance safety.

A building roof fascia and coping connector arrangement includes a cleat having a planar wall, a spacer extending inwardly from the planar wall for spacing the planar wall away from a building side when the cleat is secured thereto and having an opening permitting air flow therethrough and between the planar wall and the building, an upper securement assembly at an upper end of the planar wall, and a lower securement assembly at a lower end of the planar wall, with coping secured across an outer surface of the planar wall and connected with the upper and lower securement assemblies; and a vertical load bearing member seating on the building roof when the cleat is secured to the building side, while being connected with an upper end of the cleat to transfer a load from the cleat and the coping to the building roof.

The invention provides a high-water pressure, high-stress and automatic-mining mine water disaster comprehensive analog system and a test method, belonging to the technical field of basic research of water prevention and treatment in a mine. The invention mainly relates to a mine water damage comprehensive analog system which is good in leakproofness, and can simulate the mining, reflect the mutual function between a rock mass at a top plate and a base plate and the water, and obtain the change regularity of solid and liquid physical mechanics parameters under the conditions of high water pressure and high vertical stress. By adopting a cylindrical closed test chamber and an automatic mining analog device in the chamber, the system allows the highest water pressure at 3MPa, applies the maximum vertical load at 3MPa, has the test diameter at 1.4m, and has the sample assembly height at 1.4m. The system comprises a model test chamber, a stable high-water pressure (flow) water supply and control device, a mining simulating and controlling device, a multiple interference flow observing device and an assembly observing subsystem of pressure, stress, temperature and PH value. The invention further establishes a test method for automatically simulating the mining of the dynamic sudden water inflow by the top plate and the base plate of the mine under the conditions of high water pressure and high stress and the real-time monitoring.

A breakaway conveyor discharge member received between first and second conveying surfaces is provided. The conveyor discharge member is received by a bracket mounted on a frame connected between the first and second conveying surfaces. The conveyor discharge member includes a generally planar surface between the first and second conveying surfaces. The conveyor discharge member can withstand a vertical load substantially greater than a particular longitudinal load on the planar surface. Under normal operating conditions, the conveyor discharge member conveys the object from the first conveyor surface onto the intake conveying surface. Under jam conditions, when the substantially longitudinal load is great enough, the conveyor discharge member dislodges from the brackets to protect the first and second conveying surfaces by eliminating the jam point.

The invention discloses a moment distribution method for a self-adaptive cruise control system of a four-wheeled independent drive electric automobile. An ideal acceleration command is calculated through an upper layer control method and input in a lower layer control method, the lower layer control method is used for calculating the ideal drive moment according to the ideal acceleration command calculated through the upper layer control method and distributing the moment to four wheels, and the problem that a traditional self-adaptive cruise control system cannot be directly applied to the four-wheeled independent drive electric automobile is solved. Smoothly-restrained model prediction control is adopted in the upper layer control method, the practicality of the self-adaptive cruise control system is improved, and the requirements for safety, comfort and economical efficiency of a driver are met. Fuzzy control is adopted in the lower layer control method, so that the ideal longitudinal moment is obtained, the moment is distributed to the four wheels according to the vertical load proportions, and the robustness and practicality of the self-adaptive cruise control system of the four-wheeled independent drive electric automobile are improved while the dynamic quality of the four-wheeled independent drive electric automobile is guaranteed.

The invention discloses a portable performance test device for automatic control of a combined action of a bidirectional load of a beam-column joint and a determination method. The test device comprises an outer frame fixing device, a test piece fixing device, a test piece loading device and a data acquisition system, wherein the outer frame fixing device comprises a trapezoidal horizontal counter-force frame, an I-shaped girder bearing platform, an I-shaped beam, an I-shaped upright and a prestress wire rope; the test piece loading device comprises a horizontal actuator, two vertical actuators, a hydraulic oil source, a horizontal load sensor and a vertical load sensor; the test piece fixing device comprises two steel splints, an anchor bolt rod, a column fixing base and a column bottom hinge support; and the data acquisition system comprises a controller, a multi-channel strain collector and a computer. The device, provided by the invention, has the advantages of simple structure, convenience for assembly and disassembly, and few required materials, and is suitable for testing hysteretic behavior of a node test piece at scientific research and construction sites.

An aircraft is decelerated by applying a braking force to a wheel of the aircraft as it moves along the ground. An anti skid controller calculates the braking force to be applied by taking into account data relating to the vertical load transmitted between the ground and the wheel and data relating to the slip between the ground and the wheel. Predictions (box 13b) made regarding how the vertical load will change and data (box 13a) concerning the relationship between slip and the ground to wheel friction coefficient are both taken into account when calculating the braking force to be applied. Skids may thereby be predicted in advance and may be reduced or even avoided.

A method of controlling a washing machine is provided. A first laundry load is first detected based on a rotational property of a pulsator. A second laundry load is detected based on a property that varies in accordance with a vertical load applied from a tub. Finally, it is determined if laundry loaded in the drum is in a dry state or a wet state by comparing the first laundry load with the second laundry load.