7 results about "Transverse compression" patented technology

The utility model discloses an assembled sleeve joint, relates to the technical field of building construction, and aims to solve the technical problems that an existing device is inconvenient to install two reinforcing steel bars with a small distance and is inconvenient to repeatedly turn screw threads, the assembled sleeve joint comprises two end cylinders, an adjusting assembly and a joint assembly, the two ends of the two end cylinders are fixedly connected through side shells, supports are fixed to the adjacent ends of the two end cylinders, assembling openings are formed in the middles of the supports, the adjusting assembly is rotationally installed between the two end cylinders, the adjusting assembly is composed of a rotary knob, the rotary knob penetrates through the middle of the rod body, the connector assembly is composed of two external connection cylinders, and the two external connection cylinders are fixedly connected with the connecting assembly. And a side block is slidably installed at an opening in the outer portion of the side shell, and pressing blocks are fixed to the upper end and the lower end of the inner side of the side block correspondingly. The device has the advantages that the size of the device is transversely compressed, connection of small-spacing steel bars is facilitated, bidirectional connection is completed through one-time spiral, and operation is convenient and fast.

The utility model discloses industrial wastewater filtering equipment and belongs to the field of filtering equipment. The device comprises a filter tank, a grating mechanism, a waste box, a longitudinal compression mechanism and a transverse compression mechanism. The grating mechanism is arranged in the filter tank and is used for conveying waste materials in the wastewater. The waste box is fixedly arranged at the upper end of the filter tank and below a discharge hole of the grating mechanism and is used for collecting waste. The longitudinal compression mechanism is arranged in the filter tank and is used for extruding the waste materials from the upper side and the lower side; the longitudinal compression mechanism comprises a driving part; an upper pressing plate is arranged on the driving piece; the upper pressing plate is driven by a driving part to move up and down; and a lower pressing plate fixedly connected to the bottom of the filter tank is arranged under the upper pressing plate. Through mutual cooperation of the vertical compression mechanism and the transverse compression mechanism, waste materials can be extruded in the transverse direction and the longitudinal direction respectively, the waste materials are made to be in a compact long strip shape, accumulation and winding of the loose waste materials on a chain belt are reduced, and the risk that the chain belt is blocked is reduced.

The utility model discloses a kind of waste washing machine metal shell compression devices, the device includes base, the base is provided with compression box, compression box is a side or the square box of opposite pair of side open, multiple compression mechanism is set in compression box, multiple compression mechanism includes transverse compression component and longitudinal compression component, transverse compression component has symmetric distribution two groups, respectively set in the two sides of adjacent side of compression box opening side, longitudinal compression component is set in the upper portion of compression box, transverse compression component includes transverse extrusion plate and the transverse hydraulic cylinder of being set in the rear of transverse extrusion plate, longitudinal compression component includes downward extrusion longitudinal extrusion plate and the longitudinal hydraulic cylinder of being set in the above of longitudinal extrusion plate.The utility model is compressed to waste washing machine metal shell by transverse, longitudinal and rotation three directions simultaneously, compression efficiency is high, the density of compressed metal square is uniform, metal recovery rate is high, easy to operate, effect is remarkable.

The utility model discloses a concrete pavement side mould support device relates to the technical field of building construction, including alloy support, side mould board, side limiting arm and connecting rod, the both sides of alloy support are all equal interval and are provided with the positioning hole, one side of alloy support is provided with side mould board, the outside equal interval of side mould board is provided with the strip groove, one side of side mould board is provided with the compression mechanism, 2 groups side mould board are pressed to the both sides of concrete pavement through the compression mechanism of back, and the transverse compression force is applied to side mould board through threaded rod, and the expansion force of concrete is offset, and the positive of side mould board is provided with positioning mechanism. The bolt of vertical top end is positioned to alloy support and ground, and the design of alloy support provides good supporting force, ensures that side mould board keeps stable in the construction process, and can be adjusted flexibly according to different concrete pavement width through the design of positioning hole and side limiting arm.

This invention discloses a composite material failure prediction method based on Mohr's theory. The method includes: obtaining three basic strength values ​​of the composite material: transverse tensile strength, transverse compressive strength, and longitudinal shear strength; constructing a matrix failure function based on Mohr's theory, assuming that matrix failure is determined by stress components on its potential fracture surface; deriving coefficient relationships through a transverse isoaxial loading assumption, and determining undetermined coefficients through longitudinal shear, transverse compression, and transverse tensile loading; distinguishing between brittle and semi-brittle materials based on the ratio of transverse compressive strength to transverse tensile strength; for a given stress state, calculating the maximum value of the failure function and its corresponding angle, determining whether matrix failure has occurred, and predicting the fracture surface angle. This invention requires only three basic strength values, eliminates the need for empirical parameters, has a unified expression, and is applicable to both brittle thermosetting and semi-brittle thermoplastic composites, exhibiting high prediction accuracy.

The present application relates to the field of poisson ratio measurement, and relates to a method for measuring poisson ratio of piezoelectric film, which comprises the following steps: measuring or calculating the transverse compression modulus of piezoelectric film, the longitudinal compression of piezoelectric film, the longitudinal piezoelectric coefficient of piezoelectric film, and the transverse piezoelectric coefficient of piezoelectric film, and then substituting the above parameters into the formula to obtain the poisson ratio of piezoelectric film. Compared with the prior art, the present application has the advantages of obtaining the poisson ratio of piezoelectric film more accurately, avoiding the large error caused by the measurement of the film thickness change and the like.

This invention relates to the field of plant root mechanics testing technology and discloses a testing device and method for alfalfa root mechanics parameters. The testing device includes a connector, comprising an upper connecting column and a lower connecting column. The top of the upper connecting column is connected to an upper actuating rod via a positioning pin. A sensor is fixedly connected to the bottom of the upper connecting column via a double-ended stud. A connecting horizontal plate is installed at the bottom of the sensor via a second double-ended stud. An upper test base is provided at the bottom of the connecting horizontal plate. This invention, through the arc-shaped protrusion design of the upper test base and the curved groove design of the test piece, can separately realize tensile tests on the entire root system, the central column, and the cortex, as well as axial and transverse compression tests on the central column. It can accurately characterize the mechanical properties of different parts, overcoming the limitation of existing devices that can only test the tensile parameters of the entire root system, and providing more comprehensive and accurate mechanical data support for the optimization of root-soil composite removal technology.