38 results about "Vertical resistance" patented technology

A highly accurate physical quantity sensor which can ensure reliability in strength and reduce resistance changes caused by stresses. Assuming, with respect to stress σ imposed on a substrate in a predetermined direction (e.g., direction in which maximum stress is imposed), a parallel direction to be a horizontal direction and a perpendicular direction to be a vertical direction, each of resistors of the sensor has a horizontal resistance component Rl and a vertical resistance component Rt. When a ratio of a piezoresistance coefficient πl of the horizontal resistance component Rl, which is provided when the stress imposed on the substrate is applied to the horizontal resistance component Rl, to a piezoresistance coefficient πt of the vertical resistance component Rt, which is provided when the stress is applied to the vertical resistance component Rt, is πl:πt=−n:1 (n:integer), a resistance value ratio of the vertical resistance component Rt to the horizontal resistance component Rl is set substantially equal to the ratio of the piezoresistance coefficient πl to πt.

An exercise machine is provided for developing the chest muscles while maintaining correct biomechanical posture and joint movement for the user, thereby maximizing efficiency and safety. The exercise machine includes a track on which two platforms independently slide. The platforms are each interconnected to a weight stack unit or other vertical resistance unit that provide resistance to the inward movement of the platforms. Each platform may also be connected to a tension element or resistance band that is configured to provide gradual and progressively increased resistance as the platforms are moved inwardly towards the center or center stop of the track.

The invention relates to rapid heating equipment used for carrying out surface hardening heat processing on roller bodies of a supporting roller and other large rollers, wherein the supporting roller is used for bearing rolling force and on a metal band rolling mill. A vertical resistance- band rapid heating furnace is provided with a furnace body (9) and a base (18), wherein the furnace body is vertically arranged on the base; the furnace body consists of a furnace floor (15), a furnace chamber and a furnace cover (14); the furnace chamber is internally divided into a upper part region (11),a middle part region (12) and a lower part region (13); each internal wall of the furnace chamber of each region is respectively provided with a resistance-band heating element (10); the resistance-band heating element is connected with a controller; each region is provided with a thermocouple used for measuring temperature; the thermocouple output is connected with the controller; the middle of the furnace floor and the middle of the furnace base are hollow; the furnace cover has a open-type; and the middle of the furnace cover is provided with a circular hole. The heating furnace provided by the invention has the advantages of simple structure, low investment and small occupation area and is dedicated to the rapid heating of the surface layer of the roller body of the supporting roller.

The invention discloses a landfill resistivity irregular factor test and engineering safety warning method and system. The method comprises the following steps that in the whole process of landfill stacking body construction, operation and maintenance period, a data acquiring probe acquires a horizontal resistance signal and a vertical resistance signal of a landfill body which is tested by a landfill; a data acquiring control module calculates a horizontal resistance value and a vertical resistance value of the landfill which is tested by the landfill according to an unbalanced bridge principal; an intelligent control terminal calculates a resistivity irregular factor according to the horizontal resistance value and the vertical resistance value of the tested landfill body, thereby monitoring the change situation of the internal structure of the landfill stacking body in the whole process of construction, operation and maintenance period, and further performing landfill engineering safety warning. The system provided by the invention can be used throughout the construction of the landfill work, and has the advantages of simple and fast operation, continuousness and non-destructiveness, reliable result, low cost, easiness in promotion and the like, and filling the blank of landfill work risk evaluation and engineering safety warning, and has strong promotion and application values.

The invention relates to the technical field of engineering structure shock isolation, in particular to a slip device for a shock isolation structure. The device includes two sets of sliding assemblies arranged horizontally from up down. The two sets of sliding assemblies are perpendicular with each other. Each set of sliding assembly includes a sliding block and a sliding rail. The sliding blockis slidably connected with the sliding rail. The upper sliding block is connected with the lower sliding block through a flexible connecting piece. The flexible connecting piece is a shape memory alloy wire rope. According to the invention, the displacement requirements of the structure on the horizontal directions are met through the upper and lower groups of sliding assemblies perpendicular witheach other; according to the device, the vertical resistance-to-tensile capability between the upper and lower structures can be provided through the shape memory alloy wire rope to make up for the poor resistance to tensile of the shock isolation device. Meanwhile, orthogonal sliding assemblies are arranged to ensure that the mechanical properties of the shock isolation layer of the structure will not be affected. The device has the advantages of simple structure, fast assembly, and has good application prospect in shock insulation engineering with remarkable resistance-to-tensile energy consumption requirements in high-rise buildings, special-shaped buildings, oblique bridges and bent bridges and the like.