50 results about "Penetrometer" patented technology

The present application relates to the technical field of road engineering, and aims to provide a calibration device for asphalt penetrometer, which comprises a processor, a display, a mounting bracket mounted on the head of the penetrometer, and a calibration mechanism arranged on the mounting bracket; the calibration mechanism is provided with a swing rod, a contact rod is arranged on the swing rod and rotationally matched with the swing rod, and the rod shaft of the contact rod is connected with the input end of a rotary encoder; the swing rod can swing under its own gravity and drive the contact rod to abut against the side wall of the needle connecting rod of the penetrometer to form contact with the needle connecting rod; the rotary encoder is electrically connected with the processor, and the processor is electrically connected with the display. The present application can assist the operator to quickly and efficiently calibrate the penetrometer, is convenient to use, can be adapted to various types of penetrometers, and has good universality.

The utility model discloses an asphalt penetrometer, which is characterized in that a top sensor and a gravity sensor are synchronously arranged on a vertical driving part, a needle rod fixing bin is arranged on the gravity sensor, a clamping block and a clamping spring are arranged in the needle rod fixing bin, a controllable magnet is matched with the clamping block, and the clamping spring is arranged on the controllable magnet. And the controllable magnet attracts the clamping block to overcome the elastic force of the clamping spring so as to release the needle rod. An upper receding groove is formed in the bottom of the needle rod, a lower receding groove is formed in a nut locking sleeve arranged below the needle rod, the thin-waist elastic ring is fixed through the upper receding groove and the lower receding groove together, and the needle head is clamped and fixed to the elastic ring. During operation, after the high-precision gravity sensor senses that the tip of the test needle is in contact with the asphalt surface, the penetration depth starts to be measured, the needle head is automatically released after the measurement is completed, the needle head automatically falls off, and finally the penetration degree is measured and calculated.

The utility model belongs to the in-situ soil sample tester technical field relates to a portable electric penetration appearance, its characterized in that: including test base, connecting assembly and penetration assembly, the upper end of test base is installed with penetration assembly through connecting assembly. The portable electric penetration appearance, the structure design of test base and penetration assembly integration in prior art is dismantled the split type structure of test base and penetration assembly through connecting assembly, greatly reduces the storage volume, and it is convenient to carry back and forth, convenient to use.

The utility model relates to an automatic pitch penetration apparatus, including base, the upper end of base is equipped with support and is used to place the liftable platform of sample dish, and the base has the cavity of accommodating liftable platform, be provided with lifting assembly on the support, and the bottom of movable end of lifting assembly installs needle control assembly, and the standard needle is installed on needle control assembly, the bottom of fixed end of lifting assembly installs lifting arm, the coaxial sleeve of one center bearing is equipped with in the lower end of lifting arm, and one cross arm is sleeved in the outer ring of center bearing, the utility model drives the measuring rod coarse adjustment through the lifting arm, and then through the locking rod microdistance locking, and the pitch surface measuring piece can be accurate zero mark with the light touch sample surface, and then the measuring rod rotates 180 DEG, and the standard needle calibration piece that replaces the original position with the standard needle coplanar with the measuring piece, and the standard needle only needs to be perpendicular to drop and abut the calibration piece, and the zero distance setting of needle point and pitch surface is completed, thereby significantly reduces the artificial error, improves the test repeatability and operation efficiency.

The invention relates to the technical field of static sounding. More specifically, the invention relates to an inclined static sounding device, comprising: a static sounding instrument; an opening through which a probe rod of the static penetrometer passes is formed in the middle of the anchoring seat; the rotary support is rotatably arranged on the anchoring seat, and the static sounding instrument is detachably mounted on the rotary support; and the angle adjusting mechanism is arranged on the anchoring seat and is in driving connection with the rotating support so as to adjust the included angle between the rotating support and the anchoring seat. The inclined static sounding device is stable in structure, adjustable in angle, high in penetration efficiency and accurate in data correction.

The invention relates to the technical field related to intelligent sensors, in particular to an intelligent induction type sensitivity testing device of a temperature static penetrometer and a testing method thereof.The intelligent induction type sensitivity testing device comprises a workbench and a loading frame movably arranged above the workbench and used for installing a penetrometer to be tested, and further comprises a cylinder fixed to the workbench; a cloth bag for containing a soil sample is arranged in the cylinder, the bottom end of the cloth bag is connected with a first traction mechanism arranged at the bottom of the cylinder, a plurality of connecting parts distributed at equal intervals along the circumference are formed at the upper end of the cloth bag, and the plurality of connecting parts are respectively connected with a group of second traction mechanisms; the arc-shaped pieces are movably arranged in the cylinder and distributed at equal intervals along the circumference, and each arc-shaped piece is connected with a pressure applying mechanism arranged on the cylinder; through uniform pressure application and dynamic resistance adjustment, the accuracy and reliability of the test can be improved, the flexibility of the test and the richness of data are realized, and more comprehensive data support is provided for performance evaluation and optimization of the temperature static penetrometer.

The utility model discloses an asphalt penetration testing device and relates to the technical field of asphalt tests. The asphalt needle penetration testing device comprises a needle penetration instrument, a constant-temperature controller, a constant-temperature container and a sample transfer device positioned in the constant-temperature container, the penetrometer is used for carrying out detection, penetrometer and penetrometer reading on an asphalt sample, and the constant temperature controller is connected with the constant temperature container and is used for carrying out constant temperature treatment on the asphalt sample in the constant temperature container; the sample transfer device comprises a rotating device located in the middle and a plurality of moving devices located on the outer side of the rotating device, each moving device comprises a sliding channel and a sample containing piece, the sliding channels are in sliding connection with the sample containing pieces, the sample containing pieces are used for containing the asphalt samples, and the rotating devices are used for fixing and rotating the sample containing pieces. By adopting the asphalt penetration testing device, the problem of low working efficiency of manual operation in the prior art can be solved.

The present application belongs to the technical field of ocean engineering, and relates to a telescopic self-installation dynamic penetrometer, an operation method and application thereof to seabed soil strength parameter calculation. The present application overcomes the defect of insufficient penetration depth of the dynamic penetrometer, provides soil reaction force by setting extendable blades inside the lower booster and the upper booster, and realizes continuous penetration of the dynamic penetrometer in seabed soil by relying on motor driving. The present application basically does not change the weight of the dynamic penetrometer, and has no special requirements for the survey ship; measurement in any depth range can be realized, and the application prospect of the dynamic penetrometer is greatly expanded. The present application also proposes a seabed soil strength parameter interpretation method based on the measurement data of the dynamic penetrometer, which can interpret the seabed soil strength parameters in the stage of high-speed penetration of the dynamic penetrometer into seabed by relying on self-weight and the stage of continuous penetration of the dynamic penetrometer into seabed by relying on motor, and provides a basis for marine geotechnical engineering design.

The utility model relates to the technical field of penetrometer supports, in particular to a light penetrometer multifunctional frame. Comprising a triangular support and a pile casing arranged at the center of the triangular support, a sounding rod is arranged in the pile casing, and a beating mechanism is arranged at the upper end of the triangular support; the hammering mechanism comprises a ring piece fixed to the peripheral side of the sounding rod and a heavy hammer arranged at the upper end of the ring piece, a through hole is formed in the center axis of the heavy hammer, and the heavy hammer is arranged on the peripheral side of the sounding rod in a sleeving mode through the through hole. The pile casing can control the penetration angle of the sounding rod and guarantee vertical insertion, the triangular support guarantees insertion stability and increases detection accuracy, the heavy hammer can be used for striking an anchor rod such as soil, use convenience is increased, and work efficiency is improved.

This invention relates to an automatic lightweight cone penetrometer, comprising a trolley and a fixed support. The fixed support is mounted on the front outer surface of the trolley, and a movable rod is fixedly connected to the upper part of the right outer surface of the fixed support. A control unit drives a pull rope to lift a hammer, which is then limited by a guide rod, ensuring the hammer accurately lands on the hammer base. This allows the probe at the lower end of the hammer base to effectively penetrate the ground. A hammer-counting sensor on the hammer base transmits data to the control unit, recording the number of hammer strikes. This eliminates the need for manual recording of hammer strikes and manual lifting of the hammer, reducing labor intensity and saving labor costs. Furthermore, when pulling the probe out of the ground, the use of a toothed belt and gears further reduces labor intensity.

A vacuum adsorption temperature control automatic sample feeding test device for an automobile environment-friendly film is characterized in that a Y-axis walking mechanism and a penetrometer are respectively fixed on a rack, an X-axis walking mechanism is fixed on the Y-axis walking mechanism, a connecting plate is fixed on the X-axis walking mechanism, one side surface of the connecting plate is arranged on a table board of the penetrometer and is in clearance fit with the table board of the penetrometer, and the other side surface of the connecting plate is in clearance fit with the table board of the penetrometer; a vacuum adsorption heating table is fixed on the connecting plate; the X-axis walking mechanism is matched with the Y-axis walking mechanism, the vacuum adsorption heating table on the connecting plate can be driven to move front and back and left and right between the penetrometer table top and the standard needle head, and the air compressor is connected with an adsorption pipe connector of a vacuum adsorption plate bottom plate of the vacuum adsorption heating table through a vacuum generator. The temperature controller is connected with the heat sensor and the vacuum adsorption heating table electric stove wire, and the programmable servo controller is connected with the Y-axis stepping motor and the X-axis stepping motor. According to the invention, cross movement of the X-axis walking mechanism and the Y-axis walking mechanism can be realized, automatic feeding is realized, and multi-point testing of test samples is completed.

The invention relates to a seabed combined sounding device and method for shallow stratum multi-parameter exploration. The device comprises a supporting frame, a lifting mechanism, a rotating mechanism and a combined sounding instrument. A lifting mechanism is arranged in the supporting frame, a rotating mechanism is arranged on a lifting assembly of the lifting mechanism, and the output end of the rotating mechanism is connected with the combined penetrometer; the combined penetrometer comprises a connecting rod and a probe arranged below the connecting rod; the probe comprises a conical section, a cylindrical section and an annular section which are sequentially connected, and the outer diameter of the annular section is larger than that of the cylindrical section; a force sensor I is arranged in the conical section and is used for measuring conical tip resistance; a friction sleeve and a pore water pressure sensor are arranged on the cylindrical section; a cutting edge is arranged on the outer wall of the annular section. The testing method comprises the steps of testing point arrangement, penetration, unloading, dissipation, rotation testing and drainage unloading, and in-situ and comprehensive testing of the sediment can be achieved.

This invention provides a pressure-rotation cone penetration test (PPT) device and method for determining soil and rock parameters. The PPT device includes a housing, a torsional power unit, a static loading device, a pressure-rotation cone penetrometer, a displacement sensor, and a torque sensor, all installed within the housing. The torsional power unit drives the pressure-rotation cone penetrometer to rotate, while the static loading device applies downward pressure to the device. Under the combined action of both, the device rotates downwards into the soil and rock mass. The displacement sensor collects the downward displacement of the device, and the torque sensor measures the torque force exerted on the device as it rotates downwards into the soil and rock mass. The displacement and torque sensors transmit the collected data to a control computer via wired or wireless means. After receiving the penetration data from the sensors, the control computer calls the relationship model between the penetration data and soil parameters, substitutes the penetration data into the model, generates a test report, and displays it on a monitor in real time.

The invention discloses a static sounding device with a normally-closed cable and a probe separable and a using method.The device comprises the static sounding probe, the cable, a waterproof aviation plug male head, a waterproof aviation plug female head, a lock body, an electromagnetic lock cylinder and a spring bolt, the spring bolt is provided with a non-magnetic spring bolt part and a magnetic conductive unlocking part, an elastic body is further arranged on the outer side of the non-magnetic spring bolt part, and the elastic body is arranged on the outer side of the non-magnetic spring bolt part. The elastic body abuts against the inner wall of the lock body. In a natural state, the non-magnetic spring bolt is partially clamped into the clamping groove to lock the electromagnetic lock cylinder; when the cable needs to be taken back, the electromagnetic lock cylinder is powered on to attract the magnetic conductive unlocking part, so that the non-magnetic lock tongue part retreats from the clamping groove, the cable can be directly taken back, then the hollow steel pipe is taken back, cable abrasion and winding are avoided, the taken-back hollow steel pipe does not need to be tidied by multiple persons, convenience is improved, and the cost is reduced. The working efficiency is greatly improved; the structure is simple and compact, and installation and use are easy.

The invention discloses an automatic light dynamic penetrometer which comprises a base, a hole body is formed in one side of the base, a supporting frame is installed on one side of the top end of the base through screws, a servo motor at the top end of the supporting frame is installed on a driving mechanism, and a rotating shaft is installed on one side of the servo motor. A servo motor works to drive a rotating shaft to rotate, the rotating shaft rotates to drive a rotating wheel to rotate, the rotating wheel rotates to drive a chain to rotate, when the chain rotates, a connecting rod is driven to ascend and descend, and when the connecting rod ascends and descends, a tray can be driven to ascend and descend; when the tray touches the top end of the drop hammer, the tray retracts and continues to descend in sequence, when the tray moves to the bottom end of the drop hammer, elasticity of the spring drives the tray to reset, the tray supports the drop hammer again and drives the drop hammer to ascend, and in this way, the drop hammer can be driven to ascend and descend in a reciprocating mode, and the feeler lever is continuously smashed into the ground.

This invention relates to the field of in-situ testing technology for soil and rock, specifically disclosing a dual-purpose penetrometer capable of switching between static and dynamic testing. It includes a main frame, within which a movable main shaft is vertically mounted. A drop hammer is mounted on the main shaft, and a penetrometer probe is mounted at the bottom of the main shaft. The main frame also houses a lifting assembly, a pressing assembly, a first horizontal moving assembly, and a second horizontal moving assembly. The first horizontal moving assembly is connected to the lifting assembly, enabling horizontal movement of the lifting assembly and thus connecting or disconnecting the main shaft from the lifting assembly. The second horizontal moving assembly is connected to the pressing assembly, enabling horizontal movement of the pressing assembly and thus engaging or disengaging the main shaft from the pressing assembly. This invention utilizes the lifting assembly, pressing assembly, first horizontal moving assembly, and second horizontal moving assembly to form both a static and a dynamic penetrometer.

This utility model relates to the field of foundation testing technology, specifically a testing device for thick loess municipal roadbeds. It includes a frame, a penetrometer rod, and a core hammer. One end of the penetrometer rod has a probe. The penetrometer rod consists of a support rod and a splined rod, connected by a hammer block. The core hammer slides on the splined rod. A lifting assembly is mounted on the hammer block, comprising a connecting plate, a motor, and a lifting rod. The connecting plate is connected to the hammer block and its height is adjustable. The motor is located at the end of the connecting plate, and its output shaft passes through the connecting plate and connects to the lifting rod. The lifting rod is telescopic and has a lifting block at its end. A stop bar is provided on the side wall of the core hammer. The motor drives the lifting rod to rotate, causing the lifting block to hook onto the stop bar on the core hammer, achieving automatic lifting. This replaces manual operation, avoids operator fatigue, enables continuous and efficient testing, and improves the efficiency of large-scale roadbed testing.

The invention relates to the technical field of frozen soil penetrometers, and particularly discloses a compacted frozen soil penetrometer and a control system thereof.The compacted frozen soil penetrometer comprises a frozen soil penetrometer body, the frozen soil penetrometer body is composed of two rectangular plates and four supporting columns, and an L-shaped plate is fixedly connected into the frozen soil penetrometer body. As the penetration mode of the frozen soil penetrometer body adopts a rotary structure, the test efficiency can be improved, and when the penetration operation is carried out, the external handheld end is combined with the operation state data and environmental data of the frozen soil penetrometer body and the resistance coefficient measured by the sensor, so that the test efficiency is improved. According to the technical scheme, the moving speed of the threaded rod can be dynamically adjusted, so that it is guaranteed that the threaded rod is in a constant-speed state in the whole injection operation, the situation that the moving speed of a probe fluctuates, and consequently deviation exists between a measurement result and an actual situation is avoided, and the accuracy and reliability of a final evaluation result are guaranteed.

An ultrasonic penetrometer may include an enclosure, an ultrasonic sensor, and a rod. The enclosure may include a channel having a first end and a second end. The ultrasonic sensor may be provided at the first end of the channel and may be configured to generate an ultrasound signal through the second end of the channel. An output from the ultrasound sensor may be used to determine a thickness or stiffness of sediment. The rod may have a proximal end facing the ultrasonic sensor and a distal end opposite the proximal end. The rod may be configured to move relative to the enclosure. The distal end may be configured to contact the sediment. The enclosure may be configured to be fluid-tight relative to an exterior of the enclosure such that the generated ultrasound signal travels in a single medium.

The self-generating small static penetrometer comprises a conical probe of a solid structure and a shell connected to the top end of the conical probe, the shell is of a segmented connection structure, and the interior of the shell is segmented into an end resistance measuring bin, a self-generating bin and a signal processing bin from bottom to top; a plurality of friction force sensors are uniformly arranged on the outer wall of the shell from the bottom end to the top end of the shell, a pressure-bearing column is arranged in the end resistance measuring bin, an upper semiconductor resistance strain gauge is arranged on the pressure-bearing column, a composite generator is arranged in the self-power-generation bin, and the composite generator performs comprehensive power generation through friction nanometer power generation and electromagnetic induction power generation. Components in the signal processing cabin are used for power management and processing and transmission of collected force signals. Comprehensive power generation is carried out through friction nanometer power generation and electromagnetic induction power generation, and the purpose of passive in-situ continuous testing of the static penetrometer is achieved.

The invention relates to the technical field of static penetrometer probe rod calibration, in particular to a static penetrometer probe rod calibration device based on mechanical induction and a calibration method thereof, and the static penetrometer probe rod calibration device comprises a rack which is provided with a pressure sensor; the lifting structure is arranged in the rack, a sliding frame capable of horizontally moving is arranged on the lifting structure, an energy storage structure is arranged at the side part of the sliding frame, and at least two groups of loading clamps with different specifications are arranged on the sliding frame; the guide groove is formed in the side portion of the lifting structure, an abutting wheel connected with the energy storage structure is matched with the guide groove, the energy storage structure can have an energy storage state and an energy release state, and after energy release is completed, the energy storage structure stops moving; and the transverse moving assembly is connected with the lifting structure, and the transverse moving assembly is used for driving the sliding frame to move, so that the calibration precision is improved.

The present application relates to geotechnical engineering detection equipment technical field, specifically to a kind of pre-drilling type static force penetrometer and detection method, and the penetration instrument mainly includes penetration telescopic device, fixed operating device and orifice fixing device, penetration telescopic device is used to carry out penetration detection and moisture content measurement in pre-drilled borehole;Fixed operating device is used to position, lower and fix the penetration telescopic device at orifice;Orifice fixing device is used to provide fixed reference for the fixed operating device;The density and moisture content data of ground soil detected by penetration telescopic device are obtained by the control and acquisition system of ground, the instrument is exquisite in design, convenient to operate, through single small-diameter pre-drilled hole, the penetration resistance and moisture content of ground soil along depth direction are synchronously, in-situ, integrated detection, so as to accurately evaluate the density of ground soil, reduce the influence of soil disturbance and moisture content on test results, the detection accuracy is significantly improved, greatly improve the accuracy of in-situ test.

The application discloses a double-array resistivity hole pressure static sounding device, which comprises a conical probe, a hole pressure filter ring, a sidewall upper friction cylinder, a resistivity testing module, a digital circuit board and an analog-digital converter; the conical probe is connected with the sidewall upper friction cylinder through the hole pressure filter ring; the sidewall upper friction cylinder is connected with the resistivity testing module; the sidewall upper friction cylinder is internally provided with a hole pressure sensor, a cone tip resistance sensor, a side friction resistance sensor, a temperature compensator and an inclinometer which are connected with the digital circuit board; the digital circuit board is connected with the resistivity testing module; the digital circuit board is connected with the analog-digital converter through a coaxial cable; the coaxial cable is connected with the analog-digital converter and a data acquisition instrument outside the device; the soil body horizontal resistivity measured by the application has the characteristics of in-situ, rapid, continuous and reliable, and provides a powerful detection tool for geotechnical engineering practice.

The utility model relates to the technical field of calibration, and discloses a calibration device for a static penetrometer, which comprises a base, a bracket is arranged on the upper surface of the base, a standard dynamometer for calibration is arranged at the top of the bracket, a jacking mechanism is arranged at the bottom of an inner cavity of the base, a mounting seat is arranged on the upper surface of the base, and a lifting mechanism is arranged on the mounting seat. The mounting seat is arranged at the upper end of the jacking mechanism, a positioning mechanism is arranged on the mounting seat, and a penetrometer probe is mounted on the mounting seat through the positioning mechanism; through cooperation of the base, the jacking mechanism, the mounting seat and the positioning mechanism, the penetrometer probe can be quickly clamped through multiple groups of clamping blocks of the positioning mechanism, so that the mounting efficiency of penetrometer probe calibration is improved, the time for aligning the standard dynamometer, the penetrometer probe and the axis of the bracket is shortened, and the mounting efficiency is improved. Therefore, the calibration efficiency of the penetrometer probe is improved, the overall operation is convenient, and the practicability is improved.

The utility model discloses a consistency detection device for modified asphalt, and relates to the technical field of asphalt detection. Comprising a penetrometer body, a flat-bottomed glass dish is placed on a detection platform of the penetrometer body, the flat-bottomed glass dish is used for loading water for keeping constant temperature of asphalt and a sample containing dish for loading the asphalt, and a springback type triangular clamping support for supporting the sample containing dish is placed in the flat-bottomed glass dish; the springback type triangular clamping support comprises a middle supporting rod, three sets of connecting lugs are evenly distributed on the side surface of the upper end of the middle supporting rod, each set of connecting lugs is provided with a swing supporting rod, one end of each swing supporting rod is connected with the corresponding connecting lug through a hinge, and the other end of each swing supporting rod is provided with a limiting baffle. An arc-shaped elastic piece is connected between the middle of the lower surface of the swing supporting rod and the side surface of the middle supporting rod.

The invention relates to the technical field of bending strength detection, in particular to a device and method for detecting the bending strength of a probe rod of a static penetrometer by sensing the test temperature through a sensor, and the device comprises a support and a fixed plate arranged on the support; the elastic pressure applying mechanism is arranged on the fixing plate, a bearing plate is connected to the elastic pressure applying mechanism, and a pressure sensor used for detecting the acting force provided by the elastic pressure applying mechanism to the bearing plate is installed on the bearing plate; the supporting frame is arranged on the bearing plate, a testing plate is rotationally installed on the supporting frame, a bidirectional driving assembly is arranged on the bearing plate, a deflection regulation and control mechanism connected with the testing plate is arranged on the bidirectional driving assembly, and the deflection angle of the testing plate can be adjusted through cooperation of the bidirectional driving assembly and the deflection regulation and control mechanism. Therefore, the bending strength of the probe rod at different action angles can be simulated.

The invention discloses a hammering device of a static penetrometer, and relates to the field of geotechnical engineering investigation, and the hammering device comprises a hammering module which comprises a center penetrating hammer, a lifting and releasing mechanism used for lifting the center penetrating hammer, and a drill rod located under the center penetrating hammer; the calibration module comprises at least one calibration piece arranged on the peripheral side of the drill rod and a calibration driving piece used for driving the calibration piece to act so as to make contact with or be separated from the drill rod. By arranging the automatic calibration module in linkage with the lifting action of the piercing hammer, the calibration piece can be triggered to automatically and accurately center and straighten the drill rod in the lifting process of the piercing hammer, automatic separation is achieved in the hammering process, and therefore automation and real-time calibration of the drill rod are achieved, the operation efficiency and continuity are remarkably improved, and the production cost is reduced. In addition, reliability and consistency of calibration actions are ensured through mechanical linkage and pneumatic transmission, and errors and hysteresis of manual calibration are effectively overcome.

The invention provides a seabed static sounding device, which relates to the technical field of underground or underwater structures and comprises a mounting platform, a buoyancy system, a penetration system and a counter-force anchor mechanism. Wherein the penetration system is provided with a push-pull mechanism, a rod replacing mechanism, a rod screwing mechanism and a plurality of sections of probe rods; the movable end of the push-pull mechanism is in threaded connection with the probe rod; the storage positions of the rod changing mechanism are alternately changed through the driving unit; the rod screwing mechanism is of a double-layer structure, and each layer is provided with a butt clamping mechanism. A plurality of friction wheels are rotationally mounted on the butt clamping mechanism; in the splicing state, the internal threads of the probe rods are matched with the external threads of the adjacent probe rods. The injection system is simple in structure and low in cost, the push-pull mechanism, the rod replacing mechanism and the rod screwing mechanism are arranged through the injection system, coaxial rod connecting and disconnecting operation can be achieved, complex auxiliary equipment is not needed, full-automatic operation is achieved, and good splicing precision can be kept; furthermore, the holding and rotating design of the rod screwing mechanism can meet the connecting strength requirement of the feeler lever, and the reliability is high.

The utility model discloses a concrete penetration resistance meter which comprises a base, a moving mechanism, a placing table, a test mold, a supporting rod, a mounting frame, a control assembly and a penetration needle assembly, the penetration needle assembly comprises a mounting sleeve, the mounting sleeve is mounted on the control assembly, and the bottom of the mounting sleeve is open; the connecting sleeve is mounted in the mounting sleeve, internal threads are formed in the inner wall of the connecting sleeve, two limiting blocks are arranged on the outer wall of the connecting sleeve, two limiting grooves which are in sliding connection with the limiting blocks are axially formed in the inner wall of the mounting sleeve, and the bottom of the connecting sleeve is open; a first stud is arranged at the top of the needle body, the needle body is in threaded connection with the connecting sleeve through the first stud, and a first nut is fixedly arranged on the first stud; the pressure sensor is installed at the top of the interior of the installation sleeve, and when the connection sleeve moves upwards in the installation sleeve, the top of the connection sleeve abuts against the pressure sensor.

A computer-implemented method of determining subsurface thermal conductivity of a target soil is disclosed. The method includes: receiving temperature data including a temperature at each of n time points from a heat flow penetrometer surrounded by a target soil; determining, for each point in time, a measured temperature difference based on the estimated values of the thermal conductivity and volumetric heat capacity of the target soil; the solution space is used to generate a calculated temperature difference of the estimated values of the thermal conductivity and the volumetric heat capacity for each of a predetermined series of time points of the solution space. The solution space includes a plurality of values of thermal conductivity, a plurality of values of volumetric heat capacity, and a pre-calculated value of a temperature difference for each combination of the values of thermal conductivity and volumetric heat capacity and for each of a predetermined series of time points of the solution space. The invention further relates to improvements in sustainability and environmental development: we together create a safe and livable world.