13 results about "Penetration force" patented technology

The full-automatic concrete setting time measuring device comprises a machine body, a test cylinder and an electric control system which is arranged on the front side of the machine body and is used for controlling all electric appliance accessories, the upper side of the machine body is sequentially provided with a test cylinder placing frame used for arranging and placing a plurality of test cylinders, a multi-direction moving mechanical arm used for grabbing the test cylinders to move front and back, up and down and left and right, an uncovering mechanism used for uncovering the test cylinders, and a dip angle water absorbing mechanism used for absorbing bleeding water on the inner sides of the test cylinders from right to left. The rotating mechanism is used for placing the uncovered test cylinder, the needle feeding mechanism is arranged above the rotating mechanism and is used for inserting and measuring the setting time of concrete in the test cylinder, a concrete penetration force value is automatically measured within a specified time interval through an automatic electric control system, and the penetration resistance of a sample is calculated; and the initial setting time and the final setting time are obtained through the time-penetration resistance curve, so that manual detection of the setting time is converted into automatic detection, and the working efficiency and the accuracy are greatly improved.

The invention belongs to the technical field of laser cutting, and particularly relates to a color steel sandwich panel size cutting device which comprises a workbench and further comprises two extrusion limiting mechanisms, a laser cutting mechanism, a smoke suction mechanism, a laser power synchronous regulation and control mechanism and a panel thickness feedback regulation and control mechanism. The thickness can be synchronously detected and fed back, and the clamping force (the larger the thickness is, the larger the force is) of the extrusion limiting mechanism is automatically adjusted and controlled to guarantee the cutting stability; the laser cutting power is synchronously regulated and controlled (the larger the thickness is, the larger the power is), the penetrating power is ensured, and material ablation is avoided; the rotating angular speed of the laser cutting mechanism can be automatically regulated and controlled according to the thickness and the cutting diameter, and the linear speed is stabilized to guarantee the cutting quality; meanwhile, cutting smoke can be rapidly adsorbed, the suction power can be automatically adjusted and controlled according to the thickness (the larger the thickness is, the larger the thickness is), pollution is avoided, slag adhering and burr adhering to a notch of the thin plate are prevented, and the cutting quality is comprehensively guaranteed.

The application discloses a construction method of full-steel-casing mud-free cast-in-place pile for soft soil layer in sensitive area. The method collects underground pipelines, underground water level, soft soil layering parameters and deformation value of adjacent sensitive objects to determine the control parameters of steel casing penetration, drilling and settlement; in the process of static pressure penetration of the steel casing, the soil in the previous section of the steel casing is taken out to form a soil unloading section, then the next section of the steel casing is controlled to continue to be pressed in, and the penetration speed and correction amount are dynamically corrected according to the penetration force, vertical deviation and surrounding settlement value; then the soil is taken out in the steel casing to form a hole without mud, and re-excavation, slag removal or drilling adjustment is carried out according to the hole forming stability evaluation result; when pouring concrete, the stage lifting amount is determined according to the pouring amount and pressure, so that the bottom end of the steel casing is kept in the safe embedding range. The application can reduce the disturbance of soft soil, hole collapse, mud inclusion and pile breakage risk, and realize mud-free environmental protection construction.

This invention discloses a drilling and stirring vibratory compactor, comprising: a first driving component, a horizontal excitation component, a second driving component, and a drilling and stirring component connected in sequence. The first driving component drives the horizontal excitation component to generate a horizontal excitation force, and the second driving component drives the drilling and stirring component to perform cutting and stirring operations. The vibratory compactor has two operating modes: a horizontal excitation mode generated by the horizontal excitation component and a drilling and stirring guided hole-making mode generated by the drilling and stirring component. During hole-making, the combination of the horizontal excitation and drilling and stirring guided hole-making modes results in strong penetration and high hole-making efficiency. When hole-making is completed and the pile-forming stage begins, the horizontal excitation mode can be used alone, which is more conducive to efficient vibration compaction of the pile body, resulting in a better quality pile. Therefore, different modes can be selected according to the construction steps, demonstrating strong flexibility and adaptability.

A method of acquiring and analyzing properties of a fresh or partially set cement-based material includes penetrating the material with a probe driven by a controller-regulated actuator; measuring, with a force sensor, penetration forces applied to the probe; transmitting, from the sensor, force data to the controller; determining, by the controller, penetration depths based on the force data and / or actuator position data; recording, by the controller, the depths; associating, by the controller, the depths and the forces to form synchronized pairs; determining, by a processor, the yield force of the material based on change in relationship between the depth and the force within the pairs, and calculating, by the processor, a static yield stress of the material based at least in part on the yield force, a probe geometry factor, and an angle of internal friction of the material. A portable penetration device is also disclosed.

A shaped charge operable to form a perforation with limited penetration in a borehole, the shaped charge comprising: a housing (60); a main mass explosive material (64) disposed within the housing (60); a liner (62) coupled to the housing (60) and substantially enclosing the main mass explosive material (64) within the housing (60), the liner defining an external bulge (74) forming an apex (72); and an inert jet blocker (48) formed of a solid material cast within the external dome to a predetermined height above the apex (72).

This disclosure provides an experiment device for spudcan penetration and pullout of a jack-up rig, comprising an experiment bench and a spudcan leg, and further comprising: a ballasting tank; supporting wheels provided on the experiment bench; a suspension rope wound around the supporting wheels with two ends being connected respectively to the spudcan leg and the ballasting tank, wherein the ballasting tank has a first state of being seated on the spudcan leg and a second state of being separated from the spudcan leg and suspended under the suspension rope, by configuring the ballasting tank to have two different states, the gravity of the ballasting tank can be used as both the penetration force and the pullout force, and eliminating the need to provide two loading devices to apply the penetration pressure and the pullout force respectively.

The application provides a seabed penetration mechanism control method with force redundancy and stroke complementation. After the first penetration of a probe rod, data detected by a detection device on the probe rod is fed back to a control system, and penetration resistance is obtained according to a preset formula in the control system. The control system is also provided with a penetration force reference table, penetration force corresponding to the next penetration is selected according to the penetration resistance and the penetration force reference table. The control system controls the driving device to act, the driving device drives the pulley set in the adjustable pulley mechanism to move, or the driving device drives the traction rope and the pulley set in the adjustable pulley mechanism to move, so as to change the ratio of the driving speed of the driving device of the system to the penetration speed of the probe rod, and adjust the penetration force of the probe rod to the penetration force corresponding to the next penetration. The above steps are repeated after each penetration. The penetration method can flexibly adjust the penetration force according to the different penetration loads borne by the actual soil hardness, realize high efficiency and energy saving of the system, and reduce efficiency loss.

The utility model provides a concrete strength detection device which comprises a shell and a guide sleeve, and the guide sleeve is elastically connected with the shell; a force measuring sensor and a displacement sensor are arranged in the shell at intervals, a probe is arranged in the guide sleeve, the end part, deviating from the shell, of the probe penetrates through the guide sleeve, and the end part, close to the shell, of the probe is connected with the force measuring sensor; the force measuring sensor is configured to detect the penetration force of the probe penetrating into the concrete, and the displacement sensor is configured to detect the compression displacement of the guide sleeve in the probe penetration process; the strength of the concrete is the ratio of the penetration force to the penetration depth of the probe, and the penetration depth is the compression displacement of the guide sleeve. The detection device provided by the utility model is convenient to carry, provides convenient detection conditions for existing concrete strength detection, and is helpful for improving the detection precision at the same time.

The utility model relates to the technical field of medical tests, in particular to a membrane-shaped product penetrating power testing device which comprises a clamp. The needle holding clamp is fixed through the clamp; the fixing device is located under the needle holder and comprises a first fixing block, the upper portion of the first fixing block is connected with a second fixing block through a fastening assembly, the lower end of the first fixing block is fixedly connected with a mounting rod, and a first positioning hole is formed in the side wall of the mounting rod; one end of the supporting device is connected with a test bed, a second positioning hole is formed in the side wall of the supporting device, and the mounting rod is inserted into the supporting device and fixed through a positioning pin inserted into the first positioning hole and the second positioning hole; through the arrangement, the test device has the advantages of modular design, convenience in installation, low operation difficulty, convenience in storage and strong adaptability, the production and manufacturing cost is effectively reduced, the test efficiency is improved, and the test accuracy is ensured.

The present invention provides a method for calculating the suction required for the installation of a single-barrel multi-compartment bucket foundation in sand, comprising: calculating the total friction resistance of the compartment plates and the bucket wall friction resistance F that the single-barrel multi-compartment bucket foundation is subjected to during the suction sinking stage of the installation process. w Calculate the end resistance Q of the barrel wall of a single barrel multi-compartment barrel foundation during the suction sinking stage of installation. w,tip and the total resistance of the partition plate end; according to the single barrel multi-compartment barrel foundation installation process, when the single barrel multi-compartment barrel foundation sinks at a uniform speed, the sum of all the resistances of the installation is equal to the penetration force provided by the suction, and combined with the total friction resistance of the partition plate and the barrel wall friction resistance F w , total resistance at the compartment plate end, resistance at the barrel wall end Q w,tip Calculate the suction required for the installation of a single-bucket multi-compartment bucket foundation; adjust the compartment type of the single-bucket multi-compartment bucket foundation based on the suction required for the installation of the single-bucket multi-compartment bucket foundation. This application realizes the calculation of the suction required during the installation of a single-bucket multi-compartment bucket foundation suitable for sandy soil, which is convenient for calculation.