65 results about "Rigid wall" patented technology

The invention relates to a wind power boosting rotor outfield vibration sound radiation simulation method, which comprises the following steps: based on fluid simulation software Star-ccm +, taking a wind power boosting rotor outer cylinder contour as a rigid wall surface, setting an inlet condition as a wind speed and an outlet condition speed as 0, and calculating outer cylinder contour pulsating pressure; based on structural finite element software Abaqus, a finite element model is established according to the outer cylinder structure of the wind power boosting rotor, pulsating pressure serves as load input, constraint conditions are added, and the vibration displacement of the outer cylinder is calculated; based on acoustic finite element software Actran, node position information of the structural finite element model is imported, an external field acoustic domain is established, and external cylinder external field vibration sound radiation is calculated by taking external cylinder vibration displacement as load input; according to the method, calculation is carried out based on a frequency domain, the real sound wave transmission condition and the actual sound pressure cannot be reflected, and certain limitation exists. Therefore, by adopting the vibration sound radiation time domain simulation analysis method, the vibration sound radiation condition in the time domain can be obtained, and the change of the actual sound pressure along with the time can be obtained.

In some embodiments, containers, bags, and systems are provided that are useful to organize tools and other items. A tool bag may include a container body including one or more woven panels, a bottom rigid member, and a rigid wall hingedly connected to the bottom rigid member, and an engagement mechanism attached to the rigid wall. The engagement mechanism may include a base panel riveted on the rigid wall, and one or more protrusions extending from the base panel. In some aspects, the one or more protrusions are configured to engage with one or more holder slots on a ladder top.

The invention discloses a multifunctional testing device for a clay chemical permeation and consolidation test, and belongs to the technical field of rock testing, the device comprises a base, a rigid wall sample cylinder is arranged at the upper part of the base, a cap is arranged at the upper part of the rigid wall sample cylinder, and the wall cavity of the rigid wall sample cylinder is hollow; the temperature control is realized by circulating the circulating liquid of the temperature control module in the wall cavity; the device measures pressure through the pressure measuring module, supplements deionized water through the water supplementing module, and supplements a salt solution through the salt solution supplementing module. By adopting the device disclosed by the invention, proper modules are selected as required during testing, various rock and soil performance tests can be carried out, the testing device has various functions, multiple purposes are realized, and the testing cost is reduced. The rock-soil test method provided by the test device provided by the invention considers many factor indexes, can reflect complex environments in practical application more truly, has simple test steps, and can be popularized and applied in a large range.

An example medical agent filling system may comprise a container having an exterior housing formed by a rigid wall and a removable lid. The system may further comprise a fluid introduction port. The system may further comprise a fluid bus extending from the fluid introduction port to a plurality of dispensing sharps. The system may further comprise a plurality of reservoir assemblies each having a main interior volume sealed by a septum. Each of the septa may be in a punctured state with a respective dispensing sharp of the plurality of dispensing sharps extending therethrough. The fluid bus and main interior volumes of the reservoir assemblies may form an isolated fill environment.

An example medical agent filling system may comprise a container having an exterior housing formed by a rigid wall and a removable lid. The system may further comprise a fluid introduction port. The system may further comprise a fluid bus extending from the fluid introduction port to a plurality of dispensing sharps. The system may further comprise a plurality of reservoir assemblies each having a main interior volume sealed by a septum. Each of the septa may be in a punctured state with a respective dispensing sharp of the plurality of dispensing sharps extending therethrough. The fluid bus and main interior volumes of the reservoir assemblies may form an isolated fill environment.

The invention discloses a gradation design method for coarse aggregate in an asphalt mixture, computer equipment and a storage medium, and relates to the field of asphalt mixtures. The design method comprises the following steps: constructing a stacking model; the stacking model comprises a second rigid wall body arranged on the radial periphery; replacing the second rigid wall body with a flexible confining pressure wall body, and performing servo to obtain a three-dimensional discrete element model; the flexible confining pressure wall body comprises a plurality of spherical particles capable of transmitting pressure in the radial direction; applying a preset radial load and a preset axial load, and extracting a normal contact force, a tangential contact force, a normal vector, a tangential vector, a branch vector, a normal branch vector and a tangential branch vector of each contact; constructing a constitutive anisotropy coefficient; and determining the optimal gradation of each grade of coarse aggregate according to the relationship between the weighted structure stress coefficient of the second coarse aggregate aggregate and the axial strain of the second coarse aggregate aggregate under the preset axial load and radial load. According to the invention, the defect of poor correlation between a volume design method and pavement performance is overcome, and the designed gradation has excellent mechanical properties.

"Device for collecting biological samples and preparing an extract, implementation method" Collection device intended for collecting a biological sample (20) by aspiration and for preparing an extract comprising a closed jar (3) having: rigid walls (13, 14, 2) delimiting an internal volume, upstream (10) and downstream (11) orifices provided in at least one of the walls to open into the internal volume and which can be connected to upstream (18) and downstream (19) tubing, the upstream (10) and downstream (11) orifices being arranged in an upper part of the jar (3). The jar (3) further comprises an extract outlet (17) arranged in the lower part of the jar (3) and equipped with a valve (9) operable between an open position and a closed position, and one of the walls, called the movable wall, is movable relative to the other walls under the action of an operating mechanism, so as to vary the internal volume of the jar (3). Figure 1

A retention strip for retaining a magnetic toy panel includes a support body extending between a first support body end and a second support body end. The support body includes a primary support wall extending between the first support body end and the second support body end. The support body also includes a first rigid wall rigidly coupled to the primary support wall and extending transversely from the primary support wall in a transverse direction. The support body further includes a second rigid wall rigidly coupled to the primary support wall, extending transversely from the primary support wall in the transverse direction, and spaced from the first rigid wall. The primary support wall, the first rigid wall, and the second rigid wall collectively define a retention channel configured to receive the magnetic toy panel.

An example medical agent filling system may comprise a container having an exterior housing formed by a rigid wall and a removable lid. The system may further comprise a fluid introduction port. The system may further comprise a fluid bus extending from the fluid introduction port to a plurality of dispensing sharps. The system may further comprise a plurality of reservoir assemblies each having a main interior volume sealed by a septum. Each of the septa may be in a punctured state with a respective dispensing sharp of the plurality of dispensing sharps extending therethrough. The fluid bus and main interior volumes of the reservoir assemblies may form an isolated fill environment.

The present invention discloses a method, computer equipment and storage medium for designing the gradation of coarse aggregate of asphalt mixture based on microscopic mechanical properties, and relates to the field of asphalt mixture. The design method comprises: constructing a stacking model; the stacking model comprises a second rigid wall arranged at the radial periphery; the second rigid wall is replaced by a flexible confining pressure wall, and a three-dimensional discrete element model is obtained by servo; the flexible confining pressure wall comprises a plurality of spherical particles that can transmit pressure in the radial direction; a preset radial load and a preset axial load are applied, and the normal contact force, tangential contact force, normal vector, tangential vector and branch vector of each contact are extracted; the principal axis anisotropy coefficient is constructed; the optimal gradation of each level of coarse aggregate is determined according to the relationship between the principal axis anisotropy coefficient of the second coarse aggregate assembly and its axial strain under the preset axial load and radial load. The present invention solves the problem of poor correlation between the volume design method and road performance, and the designed gradation has excellent mechanical properties.

An example medical agent filling system may comprise a container having an exterior housing formed by a rigid wall and a removable lid. The system may further comprise a fluid introduction port. The system may further comprise a fluid bus extending from the fluid introduction port to a plurality of dispensing sharps. The system may further comprise a plurality of reservoir assemblies each having a main interior volume sealed by a septum. Each of the septa may be in a punctured state with a respective dispensing sharp of the plurality of dispensing sharps (72) extending therethrough. The fluid bus and main interior volumes of the reservoir assemblies may form an isolated fill environment..

The utility model discloses a double water tank for a roof ventilator, which comprises a left water collecting tank, a right water collecting tank, a first mounting fixing piece and a second mounting fixing piece which are arranged oppositely, and the close ends of the left water collecting tank and the right water collecting tank are connected and fixed through the first fixing piece. The two ends, away from each other, of the left water collecting tank and the right water collecting tank are connected with second installation fixing pieces. The left water collecting tank and the right water collecting tank comprise water tank bodies defined by rigid walls, and inner fixing folded edges and outer fixing folded edges which are integrally formed in the water tank bodies. Due to the design of the double water tanks, the overall strength of the water tanks is improved, the safety coefficient of roof high-altitude installation is improved, nailing is not needed at the bottoms of the water tanks in the installation process, leakage points do not exist, rainwater is prevented from permeating into the ventilator, and the wind load resistance is high.

To provide a collision test apparatus that can reduce the size of a conventional drop-weight type collision test apparatus and perform a collision test even if an installation area is narrow.SOLUTION: A collision test apparatus according to the present invention that makes a collision carriage collide with a rigid wall and a test body fixed to the rigid wall using the energy of gravity fall, comprises: a rail structure which includes a first rail and a second rail on a horizontal part on the rigid wall side, a curved part continuous with the horizontal part, and a vertical part continuous with the curved part; a collision carriage which travels along the first rail; and a traction carriage which travels along the first rail, and has an electromagnet that controls connection between moving-up / down means that moves up / down the rail structure using the second rail and the collision carriage. When the collision carriage towed by being connected to the traction carriage reaches a prescribed height of the rail structure, connection of the electromagnet is released, only the collision carriage is made to travel along the first rail and collide with the test body.SELECTED DRAWING: Figure 1

The invention discloses a silencing device and an electric appliance applying the silencing device, the silencing device comprises a hollow shell, the cross section of the shell is rectangular, and the cross section is any cross section perpendicular to the thickness direction of the shell; a first air duct inner surface and a second air duct inner surface are arranged in the space in the shell, the first air duct inner surface is a sound absorption wall surface, the space between the first air duct inner surface and the second air duct inner surface forms an air duct, and the first air duct inner surface and the second air duct inner surface form all wall surfaces of the air duct; one edge of the shell is provided with a first port which serves as an air outlet and can allow noise sound waves to be transmitted in, and any straight line intersecting with the first port is made; when the inner surface of the second air duct is a rigid body wall surface, the straight line intersects with the inner surface of the first air duct at least once; or after being reflected on the inner surface of the second air duct, the light intersects with the inner surface of the first air duct at least once; when the second air duct inner surface is a sound absorption wall surface, the straight line intersects with the first air duct inner surface or the second air duct inner surface at least once.

The utility model provides a rigid wall connecting piece of a scaffold. The rigid wall connecting piece of the scaffold comprises a sleeve, and the sleeve is pre-embedded in a main wall body in advance; the positioning structure penetrates through the side wall of the main wall body; the connecting structure is in threaded connection with the interior of one end of the threaded steel pipe; the wall connecting structure is in threaded connection with the other end of the connecting structure; the vertical rod and the transverse rod are in a cross shape; the cross points of the vertical rods and the cross rods are fixedly combined through the fasteners to form the scaffold. The rigid wall connecting piece of the scaffold has the advantages of being simple in structure, convenient to disassemble, flexible to assemble, capable of saving cost and easy to operate.

Device for actuating an opening and / or closing mechanism on doors, flaps or the like, especially on vehicles, with a locking latch (32) which has a closed state in which it locks the locking mechanism and the door is closed, and which has an open state in which the door's locking mechanism can be released and the door can be opened, wherein an actuating element (20) is provided which is actuable and interacts with a transmission element (10), wherein, when the actuating element (20) is actuated, the transmission element (10) transmits its movement to the pawl (32) and can thus directly or indirectly transfer it from its closed to its open state and / or vice versa. wherein the transmission element (10) has approximately the form of a flexible band and is made entirely or predominantly of plastic, characterized by that the transmission element (10) has two cross-sectional changes (12) in its course, whereby a flexible area (13) and rigid areas (14) are created by the different cross-sections (11.1, 11.2, 11.3) in the area of ​​the ends (15, 16), wherein a guide (40) with rigid walls is provided on a guide component (41) in which the transmission element (10) is movably guided.

The invention relates to a porous material flow resistivity measuring method and system.The method comprises the steps that when the rear surface of a to-be-measured sample is tightly attached to the rigid wall of an impedance tube, the first acoustic impedance rate of the front surface of the to-be-measured sample is obtained through measurement; when the distance between the rear surface of the to-be-measured sample and the rigid wall of the impedance tube is L, measuring to obtain a second acoustic impedance rate of the front surface of the to-be-measured sample; deriving the characteristic acoustic impedance of the to-be-tested sample according to the first acoustic impedance rate, and deriving the rear surface acoustic impedance rate of the to-be-tested sample according to the second acoustic impedance rate; based on the first acoustic impedance rate, the second acoustic impedance rate, the characteristic acoustic impedance of the to-be-detected sample and the rear surface acoustic impedance rate of the to-be-detected sample, the wave number of sound propagating in the to-be-detected sample is solved; and calculating the flow resistance rate of the to-be-detected sample according to the wave number of the sound propagating in the to-be-detected sample and the characteristic acoustic impedance of the to-be-detected sample. The method for measuring the flow resistivity of the porous material can remarkably reduce the measurement cost and the measurement complexity.

An item of clothing arranged to protect a wearer’s torso from excessive bending and / or torsion, the item comprising a flexible substrate 110 and a plurality of rigid wall portions 120; wherein each wall portion is coupled to, and extends away from, one side of the substrate, and at least one of the wall portions has an associated opposing wall portion; and wherein the item is arranged so that movement of a portion of the substrate in a first direction by more than a threshold amount causes at least one wall portion to abut 130 its associated opposing wall portion to inhibit further movement of said portion of the substrate in the first direction for preventing excessive bending and / or torsion of the wearer’s torso. The walls may be arranged in a three dimensional pattern across the substrate (figure 4) to permit or prevent specific types of movement. The garment may protect a person horse riding from spinal injury.

The present application belongs to the technical field of automobile crash test device research and development and manufacturing, and particularly relates to a semi-cylindrical force wall device for developing a mobile deformable barrier, comprising a restraint mechanism, a force receiving mechanism and a plurality of crash columns, wherein the restraint mechanism comprises a rigid wall and a plurality of movable plates, the force receiving mechanism comprises a force receiving base plate and a force measuring unit, the rigid wall is provided with an assembly groove, the force receiving base plate is fixed with the rigid wall through the assembly groove, and the force measuring unit is fixed on the force receiving base plate in a matrix manner; the plurality of movable plates are fixedly connected with the rigid wall through an adjusting mechanism, and the two ends of the plurality of crash columns are fixed on the movable plates through a fixing mechanism, and the crash columns are in contact with the force measuring unit. The present application can solve the problem that the existing planar force wall cannot comprehensively show the mechanical characteristics of the mobile deformable barrier.

A valve seat for a disposable medical fluid cassette is disclosed herein. The valve seat comprises a rigid wall and a tapered sealing surface extending from the rigid wall. The tapered sealing surface surrounds an opening formed in the rigid wall. The valve seat also comprises a plurality of displacement ribs extending from the rigid wall, or from an outer edge of the tapered sealing surface, so as to surround the tapered sealing surface. The displacement ribs are spaced apart to mitigate against unwanted occlusion of the tapered sealing surface.

A wall mounted corkscrew assembly 1 having a backboard 4, a corkscrew 2, and at least one magnet, as well as at least one upwardly open receptacle 5 for holding bottle corks. The corkscrew is mounted

The invention relates to a hydraulic torque measuring device for an aircraft engine unit, comprising: a hermetically sealed housing (20a) comprising a rigid wall (21) and a deformable wall (22), the rigid wall and the deformable wall defining an internal volume (26); and at least one pressure measuring element (28) capable of measuring the pressure in the internal volume (26), the hydraulic device (20) allowing an operating state in which the internal volume (26) is filled only with an incompressible liquid and the deformable wall (22) is configured to withstand pressure. The invention also relates to a gearbox comprising such a hydraulic device.

The invention provides a cantilever type rigid-flexible anti-seepage structure and a construction method thereof.The cantilever type rigid-flexible anti-seepage structure comprises a plastic concrete flexible anti-seepage wall arranged in a geological soil layer and a reinforced concrete rigid anti-seepage wall coaxially located above the plastic concrete flexible anti-seepage wall, the plastic concrete flexible anti-seepage wall and the reinforced concrete rigid anti-seepage wall are vertically and tightly connected, and a pile cap flush with the ground is arranged at the top of the rigid wall to form a whole; and slope protection feet are arranged on the cantilever sides. During construction, the flexible anti-seepage wall is firstly grooved and poured, then the rigid wall reinforcement cage is installed, after the rigid anti-seepage wall is solidified, the pile caps are constructed to be connected into a whole, and the slope protection feet are excavated and poured on the cantilever side earth of the rigid anti-seepage wall to form the whole rigid and flexible anti-seepage structure. The problems that in a dike project limited by space, a traditional separated structure is high in manufacturing cost and insufficient in anti-shearing capacity are solved.

The application belongs to the field of automobile front collision simplified test method of automobile technology structure crashworthiness performance development, and also relates to an automobile front deformation test structure. The automobile front collision simplified test method comprises a trolley structure and a barrier structure. The trolley structure comprises a front bumper (2), a main energy absorption box (3), a front longitudinal beam (4), a front baffle (5), a trolley (6), an upper bending longitudinal beam (7), a battery and a mounting bracket (8), and a front end module (9). The barrier structure comprises a fixed wall (1) and a biasing rigid wall (10). The automobile front collision simplified test method and the automobile front collision simplified test method can conveniently and reliably complete the simplified working condition verification of the automobile front collision test verification, preliminarily determine the front collision deformation safety performance of the front collision, and then perform the whole vehicle test, thereby reducing the test cost and shortening the test development cycle.

The invention relates to a device (1) for controlling the exchange of atmospheric air between two spaces (2,3) separated from each other by a vertical rigid wall (4) of an assembly (10) of rigid walls delimiting at least one, called the first space (3), of the two spaces (2,3), the control device (1) comprising: a rigid frame (5) delimiting an opening (6), a rigid panel (7) dimensioned to extend into the opening (6) and to be able to close this opening (6) in a position, called the closed position (8), relative to the rigid panel (7) with respect to the rigid frame (5), in which the control device (1) is substantially airtight, the rigid panel (7) being mounted freely in a tilting position relative to the rigid frame (5), along a horizontal tilting axis (9),the tilting axis (9) being positioned such that a difference in atmospheric air temperatures on either side of the control device (1) and of an absolute value greater than or equal to a predetermined non-zero threshold value causes the rigid panel (7) to tilt relative to the rigid frame (5) and allows a movement of hot air and a return movement of cold air, due to this tilting, and such that the rigid panel (7) is spontaneously returned to said closed position (8) when said temperature difference is less than said predetermined threshold value. Figure for the abbreviation: Fig. 1,

A fish retrieval aid is presented, comprising a substantially tubular receiving chamber (10), wherein a slot (15) extending substantially parallel to a longitudinal axis of the receiving chamber (10) is arranged in a rigid wall (11) of the receiving chamber (10), and a handle window (16) opposite the slot (15) is provided near one of the ends (12, 13) of the receiving chamber (10).

A corkscrew assembly (1), for mounting onto a wall, the assembly comprising a corkscrew component comprising a) backboard (4), a corkscrew (2), and at least one magnet (3, 18), and b) at least one upwardly open receptacle (5) for holding at least one cork from a bottle. The corkscrew (1) is mounted onto the backboard (4) and the at least one magnet (18) is located at or near the base of the backboard. The receptacle (5) comprises at least two walls (24, 15) which are formed of a flexible material and a plate (17), wherein the plate provides rigidity to at least one wall of the receptable to form a rigid wall. The rigid wall is shaped to couple with the base of the backboard at an upper edge of the rigid wall and the plate comprises magnetically susceptible material (20). When the rigid wall is coupled to the base of the backboard, the receptacle is retained in position magnetically.

The present application belongs to the technical field of heavy metal contaminated soil remediation and contaminated site blocking risk control, in particular to a low-permeability high-absorptivity detachable and assembled blocking wall body and a preparation method. The blocking wall body is composed of two parts of flexible wall body material and rigid wall body material, and is formed by stacking block by block through combination of rigid-flexible-rigid wall body material, and is vertically inserted into the contaminated site through left convex end insertion into right concave insertion slot, to form a continuous airtight blocking wall, with a permeability coefficient of the wall body below 10 ‑8 cm / s; the flexible wall body material part is composed of bentonite, potassium polycarboxylate and calcium-silicon cementitious material, and the rigid wall body material part is composed of gasified slag, coal gangue, cement, calcium-silicon cementitious material, water glass and polycarboxylate superplasticizer. The blocking wall body of the present application is freely detachable, simple to operate, binder-free, highly recyclable and environmentally friendly, and brings better use prospect.