59 results about "Load rating" patented technology

A method for setting a safe work area and a rated load in a swing type work machine, as well as a swing type work machine which utilizes the said method, are disclosed. An area where a strength-based safe work area which is established taking the strength of a swing member into account and a stability-based safe work area which is established taking the stability of the work machine into account overlap each other, is set as a safe work area to be used actually. Likewise, out of a strength-based rated load which is set taking the strength of the swing member into consideration and a stability-based rated load which is set taking the stability of the work machine into consideration, the lower one is set as a rated load to be used actually. Using the safe work area and rated load thus obtained, there are made a safety control and an appropriate display. According to this method, in a swing type work machine such as a crane, it is possible to establish a safe work area and a rated load both matching the actual hoisting capacity of the work machine.

In-situ methods and systems for determining bridge load ratings under ambient traffic are provided. These may include, for example, by installing one or more strain gauges on one or more bridge girders a batch of strain readings may be acquired from the one or more strain gauges. From the batch of strain readings, one or more strain time histories may be randomly sampled based, for example, on a girder peak strain. One or more vehicles may be randomly selected based on the one or more stored vehicle parameters by accessing a database with one or more stored vehicles and stored vehicle parameters. A bridge load rating model may be calibrated based on the one or more randomly sampled strain time histories and the randomly selected one or more vehicles for acquiring, in one embodiment, a bridge load rating distribution.

An load moment indicator, in a crane provided with hoist means of a main side and an auxiliary side, including a calculator in which a reference value if a rated load determined by the stability of a crane or the like is preset, a hoist load of the other side is converted into a load component of its own side, and the converted value is subtracted from a reference value of its own side to thereby obtain a rated load of own side, or in which a tolerant load that can be suspended by the other side is converted into a load component of its own side on the basis of a base of a reference value of the other side, and the converted value is compared with the reference value of its own side to select a lower value. Thereby, it is possible to make the most of the suspending ability of the main side and the auxiliary side and for an operator to grasp clearly a tolerance of the hoist load.

For bridges over waterways which are susceptible to scour, the load carrying capacity of the substructure may be reduced by scour. These bridges must be evaluated for reduced load rating and/or posting limits. Here, the substructure load rating is used in connection with calculating the bridge load rating. This is often limited by the substructure load carrying capacity and the tolerable deformation. Thus, bridges impacted by scour need to be judged based on both the superstructure and substructure components. The system/process to assess the substructure load rating uses an analytical method which combines numerical methods and empirical calculations to predict the behavior of a bridge's superstructure and substructure. Limited instrumentation is installed at critical locations on the bridge. The measurements are then used to verify and refine predictions to arrive at a substructure load rating which is usable with the superstructure load rating to define a safe load carrying capacity.

A sequential drawer slide is disclosed having rails that extend in a predetermined order, resulting in the weight of the drawer initially carried by multiple slides concurrently to increase the load rating of the assembly and prolong the life cycle of the drawer slide. The sequential actuation of the slide rails as the drawer is withdrawn from the cabinet is achieved by incorporating a catch between the small slide rail and the intermediate slide rail that resists extension of the small slide rail from the intermediate slide rail up to a decoupling force. If the decoupling force is greater than the force required to extend the intermediate slide rail from the large slide rail, then the intermediate slide rail and small slide rail nested therein will extend first, and the small slide rail with extend from the intermediate slide rail only after the intermediate slide rail is fully extended.

A method, system, and information handling system provides better system power consumption of a redundant power system having a plurality of power supply units (PSUs) by taking into consideration each PSU's sleep power consumption during selection of one or more PSUs to place into a “hot spare” sleep mode. For each PSU, power efficiency data at different load ratings are measured and stored. During the PSU selection, a calculation of system power consumption is conducted on each of several configurations where a different PSU is hypothetically disabled. Each calculation takes into consideration both the sleep power consumption of a disabled PSU and power efficiency data of an enabled PSU. Selection of one or more PSUs to disable is determined according to the configuration yielding the lower or lowest system input power consumption based on the results of the calculations.

The invention relates to the technical field of elevator test, and provides a method for testing elevator balance coefficient by the aid of an elevator handwheel, which is time-saving, labor-saving, simple in operation and small in systematic composition error and can be used for conveniently, accurately and rapidly measuring the elevator balance coefficient. The method includes the steps: mounting a handwheel torque testing device on the elevator handwheel and testing handwheel torque values A1, A2 and A3 by the aid of the torque testing device after an elevator load operating test; and calculating the relation formula K=iX(A2+A3)/2(A1+A2) of the handwheel torque values and the elevator balance coefficient according to torque balance principle, wherein the i refers to the proportionality coefficient of test load and rated load.

A horseshoe load cell is designed to aid in optimizing sucker rod oil production, to improve the installation and removal process for polished rod load cells. This device includes top and bottom washers, a retaining plate and associated bolts. The washers may be used to hold the load cell in the proper position on the polished rod. These washers may also be made in a variety of sizes to accommodate a range of polished rod sizes. An anti-rotation bar can be included to eliminate conflicts between load cell cabling and rod-rotator operation. The anti-rotation bar may have a hole for a quick link to absorb cable tension, reserving the cable strain relief for weatherproofing. The combination of the washers, the specially designed arms and the hole placement in the arms centers the load between the strain gauges, maximizing measurement accuracy. Two sets of strain gauges may be placed on each arm symmetrically around the rod string, providing an effective measurement method. Varying arm sizes and hole placements can be included to allow for different load ratings.

A drainage grate assembly having a drainage grate which is reinforced by a substantially continuous reinforcing member confined within the grate. The load rating for the drainage grate assembly can be adjusted by adding metal strips which can be disposed within and retained by the reinforcing member.

The invention provides a self-balancing high heavy level load loading method and device. The device comprises a carrying frame, a carrying frame beam and carrying frame columns. The carrying frame is composed of the parallel carrying frame beam and the horizontal carrying frame columns. Two limiting steel angles are arranged on the carrying frame beam. Each limiting steel angle is connected with a wire rope. A tension sensor is arranged on each wire rope. Each wire rope is connected with the end part of a power transmission distribution beam through a wire rope fixing device. Tension sensor display is arranged on the power transmission distribution beam. A jack and a reaction force pull rod are arranged on the power transmission distribution beam. A reaction force rack is arranged on the jack and the reaction force pull rod. The method and the device have the advantages that the structure is simple; a power transmission system is improved; through jack loading, the need of large tonnage loading is met in a full-scale test; the defect of small load rating in traditional suspension load is overcome; and the device has the advantages of easy installation, easy loading and secure and stable operation.

The invention provides a crane moment control method and device as well as electronic equipment, and relates to the technical field of crane control. The method comprises the following steps that obtaining state data of a crane; determining a moment balance state of the crane in real time according to the state data; and if determining that the crane is in an unbalanced state according to the moment balance state of the crane, determining a tipping point of the crane; and calculating a rated load value of the crane through the tipping point, controlling the moment of the crane according to therated load value. According to the crane moment control method and device as well as the electronic equipment, the rated load value under the current crane configuration can be calculated and obtained in real time, stepless change of working condition configuration can be realized without a built-in load table, and the adaptability of the crane under special working conditions and construction environments is improved.

The present invention relates to the field of the transportation and storage of goods and to a transport and storage system and in particular, but not necessarily restricted thereto, a system for the transportation and storage of goods such as palletised goods and self-standing goods. The present invention seeks to provide a system that can enable goods to be securely and reliably horizontally, vertically and offset stacked, despite different sizes of goods and support members therefor, such as pallets, whereby wasted volumes arising from the presence of irregular loads, pallets or pallets of different levels or different load ratings in storage and transport can be minimized.

The present invention relates to the field of the transportation and storage of goods and to a transport and storage system and, in particular, a system for the transportation and storage of goods such as palletized goods and self-standing goods. The present invention seeks to provide a system that can enable goods to be securely and reliably horizontally, vertically and offset stacked, despite different sizes of goods and support members therefor, such as pallets, whereby wasted volumes arising from the presence of irregular loads, pallets or pallets of different levels or different load ratings in storage and transport can be minimized.

The invention relates to a bevel gear wheel (1) of a bevel gear unit, each tooth (2) of which comprises a load flank (3) and a non-working flank (4), wherein the teeth (2) have a helical or spiral tooth trace, in particular a curved tooth longitudinal line, and the teeth (2), in particular the upper meshing region of the teeth, have an octoid tooth shape or a spherical involute tooth shape, and the teeth have an excess material quantity (11) on the load flanks (4) in order to reinforce the load flanks (4), in particular such that the axis (9) that runs through the tooth tip-bisecting point A₁ of the tooth tip transverse line (23) and through the midpoint of the gear wheel exhibits asymmetry of the teeth (2). The invention further relates to a method for producing a bevel gear wheel (1) according to one of the preceding claims, in which the tooth geometry is produced by a four-axis or multi-axis method, in particular a five-axis method.

The invention relates to a loading vehicle with a load rating of 500 kg. The loading vehicle comprises a chassis assembly, a lifting assembly, a tray assembly, an auxiliary lifting assembly, a hydraulic system and the like. The whole vehicle realizes hanging installing, disassembling, short-distance transportation and placing of hanging objects with the weight less than 500 kg, and the problems of inconvenience of hanging installing of the hanging objects, low efficiency, low reliability and the like due to the fact that an airplane is low in hanging point and small in space when a vehicle performs the hanging installing operation are solved. The loading vehicle is novel airplane ground support equipment, is flexible in operation and reasonable in structure, has high reliability, and meets the hanging installing requirement of low hanging points in the airplane.