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111 results about "Lateral compression" patented technology

Earth mass stillness lateral-compression coefficient determinator

The invention provides an earth mass stillness lateral-compression coefficient determinator which comprises a pressure chamber, a loading device and a measurement control device, wherein the loading device is arranged on the top or bottom of the pressure chamber; the pressure chamber comprises a base, a bottom plate and a supporting pad which are arranged on the base, a sample drum arranged on the supporting pad, an upper pressure plate matched with the top opening of the sample drum, and a pressurization cover plate and a loading sensor which are successively arranged on the upper pressure plate from top to bottom; the bottom plate is a rounded bottom plate composed of two hemicycle metal plates with same semidiameter, and the sample drum is composed of two semicircle drums on the outer side wall of the sample drum and is connected with the two semicircle drums through at least two pairs of pull pressure sensors; the upper pressure plate is composed of a hemicycle metal plate; and the signal interface of a measurement control device is respectively connected with the loading device, the loading sensor and the pull pressure sensor, the measurement control device outputs a signal to the loading device, and the loading sensor and the pull pressure sensor output signals to the measurement control device. The determinator provided by the invention has the advantages of simple structure and wide application range.
Owner:HOHAI UNIV

Soil body in situ test device and test method applying same

The invention relates to a soil body in situ test device, comprising a steel tube with the same shape of tubular pile as well as a data collector; wherein one end part of the steel tube is provided with a pile point plate and a first pressure sensor used for sensing pressure born by the pile point plate, the pile point plate is vertical to the side wall of the steel tube; more than one side wall friction drum is arranged along the radial direction of the steel tube, and each side wall friction drum is provided with a second pressure sensor used for sensing the friction force born by the side wall friction drum; the side wall friction drum forms one part of the side wall of the steel tube; one part of the side wall of the steel tube is set to be a movable lateral compression plate and is provided with a third pressure sensor used for sensing the pressure born by the lateral compression plate; the side wall of the steel tube is internally provided with a pore pressure gauge and a camera; and electrical signals sent by the first, second and third pressure sensors and the pore pressure gauge are all collected by the data collector. The device can test and read multiple data, thus being convenient for accurately analyzing soil body properties. The invention also discloses an in situ test method applying the device.
Owner:广东永基建筑基础股份有限公司

Assembly clamper for sandwich structure board lateral compression test

ActiveCN105241751AGuaranteed internal and external symmetry of strainEasy to assembleStrength propertiesSandwich boardLateral compression
The invention relates to an assembly clamper for sandwich structure board lateral compression test. In the prior art, when the large-size and non-symmetrical sandwich board is subjected to the lateral compression performance test, the centering of the compression center is difficult, and the deflection is high. A purpose of the present invention is to solve the problems in the prior art. According to the assembly clamper, an upper clamping head and a lower clamping head are arranged in an upper-lower manner, the deep groove of the upper clamping head and the U-shaped groove of the lower clamping head are oppositely arranged, four vertical position limiting plates are arranged between the upper clamping head and the lower clamping head in a rectangular manner, the upper ends of each vertical position limiting plate are positioned inside the deep groove, the lower ends of each vertical position limiting plate are positioned inside the U-shaped groove, the upper ends between the two transverse and parallel vertical position limiting plates are provided with a universal pad block and an adjustment pad block, the lower ends between the two transverse and parallel vertical position limiting plates are provided with a universal pad block and an adjustment pad block, the two universal pad blocks are oppositely arranged in an upper-lower manner, the two adjustment pad blocks are oppositely arranged in an upper-lower manner, two end plates are respectively arranged on the upper end and the lower end of the upper clamping head and the lower clamping head, and the upper cone column on the upper clamping head and the lower cone column on the lower clamping head are respectively embedded into the corresponding V-shaped grooves. The assembly clamper of the present invention is used for the sandwich structure board lateral compression test.
Owner:HARBIN INST OF TECH

Compact chuck type universal mill

The invention provides a compact chuck type universal mill, which comprises stands, a roll system and a guide and guard device, wherein the roll system comprises horizontal rolls, bearing seats, vertical rolls and vertical roll boxes, wherein a press-down device is arranged between the stands and the upper horizontal bearing seat; a press-up device is arranged between the stands and the lower horizontal roll bearing seat; a lateral compression device is arranged between the operating side vertical roll box and the operating side stand; and the operating side stand can move. High-accuracy large-sized section steel can be produced by using a closed stand and a fully hydraulic press-down device. The operating side stand is made to be movable; and when the roll system is replaced, only the operating side stand is required to be moved away to completely expose the roll system, the roll changing is realized so that the roll changing time is saved, the operating efficiency of the mill is increased, and the universal mill can be conveniently converted into a two-roll mill for use. The size of a window of the stands is reduced, so that the size of the entire mill is reduced and the weight of equipment is reduced; and the guide and guard device is integrated with the roll system, reversible rolling is realized.
Owner:中重科技(天津)股份有限公司

Test sample and method for testing performance parameters of pipe under complex stress state

ActiveCN102410957AFit plane stress-strain propertiesLarge strain rangeMaterial strength using tensile/compressive forcesTest performanceAxial compression
The invention relates to a test sample and method for testing performance parameters of a pipe under the complex stress state. A common uniaxial tension arc-shaped test sample is processed into an arc-shaped test sample with an elliptical hole. The center line of a long shaft of the elliptical hole is in superposition with a center line in the length direction of the uniaxial tension arc-shaped test sample; and the center of the circle of the elliptical hole is in superposition with the center of the shape of the arc-shaped tension test sample with the elliptical hole. Two sections of pipe compressed test samples are cut out along the axial direction of the pipe to be tested. The verticality of the cross section of each pipe compressed test sample to the axial line of the pipe is 0.08-0.1, and the degree of roughness of the cross section of each pipe compressed test sample is 0.8-0.2. The tension testing is performed on the arc-shaped tension test sample with the elliptical hole, the axial compression testing is performed on the pipe compressed test samples, the lateral compression testing is performed on the pipe compressed test samples and reverse engineering is further performed on obtained force-displacement data, thereby testing the performance parameters of the pipe under the complex stress state.By adopting the whole set of test sample for testing the performance parameters of the pipe under the complex stress state and the testing method, the testing precision and the efficiency of the performance parameters of the pipe are improved.
Owner:JIANGSU NEW HENGJI SPECIAL EQUIP

Embedded oil charging structure for high-pressure fuel oil system

The invention discloses an embedded oil charging structure for a high-pressure fuel oil system. A lateral oil charging pipe is transversely embedded into a gas distribution camshaft frame and an air valve guide barrel; an oil sprayer is vertically arranged in a cylinder cover and the air valve guide barrel, and is used for charging oil laterally; a lateral oil charging pipe is pressed tightly onto the side wall of the oil sprayer by adopting a lateral compression nut, and is screwed on the gas distribution camshaft frame; an oil sprayer assembly is pressed tightly into a cylinder cover inner hole by adopting a top end compression nut, and is screwed on the air valve guide barrel; two O-shaped sealing rings are distributed on the lateral oil charging pipe and the air valve guide barrel in a matching way; an O-shaped sealing ring is distributed on the lateral oil charging pipe and the gas distribution camshaft frame in a matching way; an O-shaped sealing ring is distributed on the oil sprayer, the air valve guide barrel and the cylinder cover respectively in a matching way; an oil return cavity is communicated with a phi5 oil return channel on the cylinder cover; and an oil leaking groove is formed between the oil charging conical surface of the oil sprayer and the oil return cavity. Due to the adoption of the embedded oil charging structure, a shorter high-pressure oil pipe is realized, the sealing requirements of fuel oil and lubricating oil can be met simultaneously, oil return of the oil sprayer is smooth, and the entire structure is easy to install.
Owner:CHINA NORTH IND GRP NO 70 RES INST

Three-dimensional circular tube conveying belt

The invention belongs to conveying machines, and relates to a three-dimensional circular tube conveying belt, which solves the problem that the conventional conveying belt can be only elevated upwards within the range of between 0 and 90 degrees. The three-dimensional circular tube conveying belt is implemented by the following special method: both ends of a bearing belt and a backhaul belt are parallel, and the conveying belt is changed into a tubular shape from a parallel shape by a conveyor rounder, so that conveyed materials are wrapped in a tube hermetically; a roller group or a single roller with a circular shape, a square shape, an oval shape, a U shape, a parallel shape and the like is used to overcome the lateral compression and clamping force which are generated by the accumulation of the materials, so that the conveying belt can make a turn in a three-dimensional direction, namely in any directions of horizontal and vertical surfaces, at an angle of between 0 and 360 degrees; and two to three layers of canvas and tyre fabrics which are prepared from nylon, polyester-nylon, terylene, carbon fibers, basalt fibers, aramid fibers and polysulfonamide by dipping gum or ropes arranged at certain intervals are arranged between upper covering glue and lower covering glue to serve as skeleton layers of the conveying belt, and the skeleton layers of the conveying belt are overlaid with side glue mutually to form the conveying belt. The three-dimensional circular tube conveying belt has the advantages of high strength, flexibility, long service and wide application.
Owner:牛国青
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