130results about "Force transducers" patented technology

A roller for a web processing machine, wherein the roller comprises a roller cylinder having a cylindrical roller core, a roller covering surrounding the roller core, and a lateral surface, wherein the roller covering consists of one or more roller covering layers in the radial direction and contains sensors, characterized in that an electrically conductive shield is arranged in the radial direction between the sensors and the lateral surface; a web processing machine comprising the sensor roller and a counter roller arranged parallel to the sensor roller with an intermediate treatment gap, wherein each of the sensors of the sensor roller can detect the pressure exerted on the sensor roller when passing through the treatment gap.

The invention provides a coal mine underground rock stratum stress monitoring system and method.The monitoring system comprises an anchoring assembly, a monitoring assembly and an information processing assembly, the anchoring assembly comprises an anchor rod and a tray, the first end of the anchor rod is used for being fixed in a rock stratum drill hole, the tray is used for being connected with the second end of the anchor rod, and the anchor rod is provided with a first detection hole; the first detection hole extends in the extension direction of the anchor rod, the center line of the first detection hole coincides with the center line of the anchor rod, the tray comprises a supporting base and a cover plate, the base is provided with a second detection hole, the extension direction of the second detection hole is consistent with the thickness direction of the base, and the monitoring assembly comprises a first monitoring piece and a second monitoring piece. The first monitoring piece is connected with the anchor rod and arranged in the first detection hole, the second monitoring piece is connected with the base and arranged in the second detection hole, and the information processing assembly is electrically connected with the first monitoring piece and the second monitoring piece. The monitoring system provided by the invention realizes continuous and real-time monitoring of the stress change of the surrounding rock, and improves the safety of a mine.

The invention relates to the technical field of coal mine rock burst monitoring and early warning, in particular to a rock burst mine micro-seismic data b value calculation method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining original micro-seismic time sequence data of a target monitoring area; preprocessing the original micro-seismic time sequence data to obtain preprocessed micro-seismic time sequence data; performing normalization processing on the preprocessed micro-seismic time sequence data to obtain standardized micro-seismic time sequence data; performing wavelet multi-scale decomposition to obtain a low-frequency approximate component and a high-frequency detail component; carrying out linear fitting by utilizing a Guyden-Ricker law to obtain a multi-scale b-value data set; and constructing and training a long-short-term memory network model, and obtaining a multi-scale b value fusion result as a final b value. Through a wavelet multi-scale decomposition technology, micro-seismic data is adaptively decomposed into components reflecting different time scales, and the limitation of manually setting a single sliding window is eliminated.

The invention discloses a landslide rock-soil body internal stress monitoring device, and relates to the technical field of rock-soil body internal stress monitoring, the landslide rock-soil body internal stress monitoring device comprises a stress monitoring instrument, the outer side of the stress monitoring instrument is fixedly connected with a monitoring sensor, and the interior of the stress monitoring instrument is slidably connected with a moving shaft; an auxiliary assembly used for reducing the damage risk of the stress monitoring instrument is arranged outside the moving shaft, a soil loosening assembly used for enabling the stress monitoring instrument to be taken out and maintained easily is arranged outside the stress monitoring instrument, and the moving shaft moves downwards to drive triangular spines to be inserted into soil downwards. The triangular spine is of a triangular structure formed by combining three spines, the stability of the stress monitoring instrument in soil can be enhanced, the stress monitoring instrument can be firmly fixed in a rock-soil body, the possibility that the stress monitoring instrument moves when rock-soil landslide occurs is reduced, the triangular spine can be in better contact with the rock-soil body after being inserted into the soil, and the stress monitoring instrument is more stable. Therefore, the internal stress of the rock-soil body can be monitored more effectively.

The invention relates to an intelligent railway tunnel detection method based on a stress sensing rod, which is applied to the field of detection, and comprises the following steps of: embedding the stress sensing rod in surrounding rock, and detecting deformation of the surrounding rock in the vertical, transverse and longitudinal directions by using a detection unit, so as to analyze and obtain the release direction and deformation of stress; the stress sensing rod is filled with air, and the air is extruded by utilizing the extrusion effect when the stress sensing rod deforms, so that the indicating liquid is driven by the air to be extruded into a specified position, and the deformation amount of the surrounding rock can be known by observing the length of the indicating liquid, so that field maintenance personnel can visually express the deformation amount; and the visual expression form and the detection value of the detection unit can be mutually verified, so that the detection accuracy and stability are effectively improved, in addition, a corresponding support adjustment scheme can be provided for maintenance personnel according to the detection value, and the safety of the tunnel is effectively improved.

The present invention provides a mounting device and method of a tandem-type rock mass three-dimensional disturbance stress sensor, and the device is formed by sequentially connecting a head end unit, a plurality of repetitive units, and a tail end unit. This invention enables the accurate installation of multiple three-dimensional disturbance stress sensors within a single borehole without requiring full-hole grouting. As a result, the sensors can be mounted in a multi-point distributed arrangement within the same borehole. Adhesive fluid in a top adhesive cartridge is triggered through a head end triggering mechanism to bond a three-dimensional disturbance stress sensor in a first repetitive unit, and adhesive fluid in a corresponding first adhesive cartridge is triggered by using the first triggering mechanism to bond a three-dimensional disturbance stress sensor in a next repetitive unit, to ensure good coupling between the three-dimensional disturbance stress sensor and a rock mass.

The invention relates to a rolling body (1) for use in a rolling bearing having a centre axis (A), an outer shell (2) rotationally symmetrical with the centre axis (A), two end faces (3, 4) and a bore (5) which connects the two end faces (3, 4) and extends along the centre axis (A) and in which a printed circuit board (6) having a measuring device (7) for measuring a deformation of the bore (5) is accommodated. The printed circuit board (6) is supported by at least one support element (10, 11) which is fastened on a first side (8) of the printed circuit board (6) and is in contact with the bore wall (14), and on an opposing second side (9) of the printed circuit board (6) at least one measuring element (12, 10, 13) is provided, which is likewise in contact with the bore wall (14) and produces a measuring gap (15) between the measuring element (12, 13) and the printed circuit board (6), the height of said gap being a measure of the deformation of the bore (5). The circuit board (6) with the measuring device (7), the at least one support element (10, 11) and the at least one measuring element (12, 13) are accommodated by a rigid housing (16) provided in the bore (5), the at least one support element (10, 11) and the at least one measuring element (12, 13) being in contact with the bore wall (14) through openings in the housing (16), and the circuit board (6) being mounted so that it is floating in the housing (16).

The invention provides ground stress testing equipment and method based on distributed double-sided compression hydraulic pillow monitoring. The equipment comprises double-sided compression hydraulic pillows and drill holes buried in the side wall or the tunnel face of a tunnel, and at least three double-sided compression hydraulic pillows with different installation angles are buried in each drill hole; the double-face pressed hydraulic pillow comprises a main body, a pressure bearing plate, pressure bearing liquid, a pressure conversion device connector, a one-way valve and a sealing nut connecting screw. The one-way valve and the sealing nut are used for injecting pressure-bearing liquid into the main body of the double-sided pressed hydraulic pillow; the pressure conversion device is mounted at the pressure conversion device connector and is used for sensing the pressure of the pressure-bearing liquid; the cable is in communication connection with the pressure conversion device and is used for transmitting the sensed pressure data to a data acquisition instrument at the orifice; and the data processing device is used for calculating crustal stress of different dimensions according to the pressure data. The device can solve the problem that the testing result is insufficient in representativeness due to the fact that the grouting quality is influenced by the combination of the one-way hydraulic pillows.

The present invention relates to the field of ground stress detection technology, and discloses a reusable full-sensing stress measurement mechanism and a method for using the mechanism, wherein a glue injection hole is opened on the side wall of the outer cylinder of the stress gauge, and a plastic film is arranged in the glue injection hole; when the inner cylinder of the stress gauge slides along the outer cylinder of the stress gauge, the inner cylinder of the stress gauge can be rotated by a first linkage mechanism; the gear sleeve can be detachably connected to the inner cavity of the inner cylinder of the stress gauge by a clamping mechanism, and when the inner cylinder of the stress gauge rotates, the gear sleeve can be driven to rotate synchronously by a second linkage mechanism, the clamping mechanism has an assembly position and a disassembly position, and when the gear sleeve rotates, the clamping mechanism can be switched between the assembly position and the disassembly position; when the gear sleeve rotates, the gear sleeve can be made to slide along the telescopic sleeve by a third linkage mechanism; the sensor module is used to be detachably connected to the telescopic sleeve. The present invention is convenient to use, adaptable to various drilling conditions, and the sensor module can be promptly withdrawn and reused.

The invention provides a guide wire force measuring device for a vascular interventional operation, which comprises a consumable module and a driving module, a clamping mechanism for clamping a guide wire is arranged in the consumable module, and a force measuring sensor and a driving part for driving the clamping mechanism to act are arranged in the driving module. The force measuring sensor is connected with the driving component, resistance borne by the guide wire in the delivery process is transmitted to the force measuring sensor through the clamping mechanism and the driving component in sequence, and the resistance borne by the guide wire is indirectly measured through the force measuring sensor. The force transducer is arranged in the driving module, the clamping mechanism is driven by the driving component to clamp the guide wire, resistance borne by the guide wire in the delivery process is transmitted to the force transducer through the clamping mechanism and the driving component in sequence, and the resistance borne by the guide wire is indirectly measured through the force transducer. The resistance of the guide wire does not need to be approximately converted through the current of the motor, so that the measurement precision of the resistance borne by the guide wire is greatly improved.

The present application relates to a kind of one-hole multi-point position liquid-filled expansion pillow type borehole stress meter, including expansion pillow, pressure detector and oil pipe, the expansion pillow is the closed tubular structure, oil pipe is connected with the one end of expansion pillow, the outer ring of the expansion pillow is equipped with the recessed tube wall and forms the avoidance slot inwards, the avoidance slot extends along the length direction of expansion pillow and is through the length direction of expansion pillow, oil pipe can be housed in the avoidance slot, the avoidance slot is at least equipped with two and is uniformly distributed along the circumference, by setting avoidance slot on expansion pillow, the oil pipe of other expansion pillow set can be passed, when measuring the stress of multiple points, multiple stress meters are loaded into one by one, the oil pipe of stress meter in deeper position needs to cross the stress meter in shallower position, oil pipe passes from avoidance slot, thus can measure the rock stress of multiple different depth positions in one hole, to increase the field practicability and applicability of borehole stress monitoring, improve the accuracy of rock burst monitoring and early warning.

The invention relates to a measuring device (1) for arranging in tubular cavities (2) of machine elements (3), comprising a deformation body (4) which has a deformation region (13). A respective press-in ring element (6) is secured to two opposite ends (5) of the deformation body (4), and the deformation body can be introduced into a tubular cavity (2) of a machine element (3) through a press-in opening (10) using a press-in force such that mechanical effects acting on the machine element (3) can extend to the deformation region (13) of the deformation body (4) by means of the press-in ring elements (6) and can be detected by a sensor device (15) secured to the deformation region (13). The press-in ring elements (6) have a degree of strength (11) in at least some regions which is so low that the deformation body (4) can be reliably introduced into the tubular cavity (2) and can be stored therein in a force-fitting manner while the circumference (9) of the tubular cavity (2) is designed to have an oval or elliptical shape, or a non-circular shape, or has high tolerance variations, such as those found in pipes for example.

The invention relates to a method and device for obtaining grouting pressure distribution, a storage medium and electronic equipment, and the method comprises the steps: determining a monitoring hole for monitoring a grouting hole in a target grouting region according to a monitoring layout strategy; a grouting pressure sensor, a soil pressure sensor and a pore water pressure sensor are respectively arranged at different depths of the monitoring hole; the monitoring holes are backfilled, and grout is injected into the grouting holes in a segmented mode according to the grouting technology; in the grout injection process, a grouting pressure sensor, a soil pressure sensor and a pore water pressure sensor are synchronously triggered to collect grouting pressure data, soil pressure data and pore water pressure data respectively, and segmented grouting parameters are adjusted based on the soil pressure data and a soil pressure threshold value as well as the pore water pressure data and a stabilization time threshold value; a pressure diffusion quantitative model is constructed on the basis of synchronously collected grouting pressure data, soil pressure data and pore water pressure data, and grouting pressure distribution is obtained on the basis of the constructed pressure diffusion quantitative model. And the grouting efficiency can be improved.

Provided is a physical quantity detection device that can detect load information and a lateral acceleration for each wheel, the load information including information on not only a vehicle weight but also occupants and a load weight, allows damper control for separating controlling four wheels, and can provide a lateral force calculated with high accuracy. The physical quantity detection device according to the present invention calculates a lateral force, using a load detected in real time by a strain sensor and a lateral acceleration detected from characteristics of a sensor signal waveform, detects the load from a magnitude of a strain peak amplitude, and detects the lateral acceleration from a difference between a magnitude of the strain peak amplitude at the time of making a turn (at the time of the lateral acceleration being applied) and a magnitude of the strain peak amplitude at the time of traveling straight ahead.

According to the signal processing method, the transmission method, the electronic equipment and the angle detection device provided by the invention, the rotation angle data is generated and processed in the installation process of the borehole stressmeter, so that the rotation angle of the borehole stressmeter can be accurately monitored in real time, and the rotation angle is converted into the signal adaptive to the sectional dimension of the connecting device for transmission. By modulating the frequency band of the signal, the problem of signal attenuation in a deep hole environment can be effectively solved, the signal can still be stably transmitted in a complex environment, and the data precision and the transmission reliability in the installation process of the borehole stressometer are improved, so that the geological disaster prediction and prevention efficiency is improved.

The invention relates to the technical field of geotechnical engineering testing, and discloses a pressure box assembly for testing geotechnical mechanical characteristics, the pressure box assembly comprises a pressure box and further comprises a drilling assembly, the drilling assembly comprises a supporting frame and a drilling device body, the supporting frame is connected to the ground through a stabilizing piece, the drilling device body is fixedly connected to the supporting frame, and the stabilizing piece is fixedly connected to the drilling device body. The drilling end of the drilling device body is fixedly connected with a circular plate, a drilling piece is arranged on the circular plate, and the drilling piece is used for drilling holes into soil and collecting the drilled soil into the drilling piece; and the mounting assembly comprises two mounting boxes, the two mounting boxes extend into the soil in the drilling piece from the two opposite sides of the drilling piece respectively, connecting pieces are arranged on the two mounting boxes, and the mounting boxes are used for containing the pressure boxes. The purpose of in-situ detection of the internal stress of the soil layer without artificial external force introduction is achieved, the detection initial value can accurately reflect the internal stress of the soil layer, and the long-term detection value is stable and real.

The invention relates to the technical field of coal mine rock burst monitoring, in particular to coal mine rock burst monitoring and early warning equipment which comprises a main cable and further comprises a closed structure connected with the main cable, the closed structure comprises an expansion plugging mechanism, the expansion plugging mechanism is connected with a nailing mechanism, and the expansion plugging mechanism is connected with an anti-impact hydraulic mechanism; the hole entering and discharging structure is connected with the main cable and comprises a traction robot, the traction robot is connected with a sleeve frame, the sleeve frame is connected with a plurality of sets of rectangular sleeves, the rectangular sleeves are connected with a set of connecting sleeves through first active telescopic rods, supports are connected into the connecting sleeves through sleeve bodies, and the supports are fixedly connected with pressure sensors. Through cooperation of the sealing structure and the in-hole discharging structure, the device is suitable for drilling holes in different extending directions, fixed-point data collection at different positions in a coal mine is facilitated, the safety and durability of the coal mine are improved, and early warning operation on follow-up rock burst is facilitated.

The present invention relates to the field of tunnel engineering technology, and specifically to a shield tunnel earth pressure box fixing device; the adopted technical scheme is: a shield tunnel earth pressure box fixing device, including an earth pressure box fixing device body and a mounting seat, the mounting seat is used to install the earth pressure box, the bottom end of the mounting seat is provided with a support rod, the support rod is covered with a fixed base, and the position of the fixed base in the length direction of the support rod is adjustable; the mounting seat is installed in the grouting body behind the segment wall when in use, so that the upper end of the earth pressure box is close to the tunnel surrounding rock; the fixed base is inserted into the shield segment when in use, and is fixedly connected to the shield segment. After the shield segment and the grouting body behind the segment wall are constructed, the present invention can avoid damage to the earth pressure box caused by grouting and avoid grouting affecting the accuracy of earth pressure box measurement.

An apparatus (1) for connecting an implement to a work machine has a pivoting device (2) by means of which an implement connecting device (4) can be pivoted relative to a work machine connecting device (3) about a pivot axis, wherein the pivoting device (2) has a hollow cylinder, a piston shaft which is mounted pivotably about the pivot axis in the hollow cylinder, and an annular piston sleeve which is mounted displaceably in an axial direction along the pivot axis between the hollow cylinder and the piston shaft. The piston shaft has, successively in the axial direction between the two radial bearings, an annular piston sleeve sliding section with a sliding section diameter and the piston shaft engagement section with an engagement section diameter (DE) which is greater than the sliding section diameter (DG). A torque measuring device is arranged on or in the piston shaft in the piston shaft engagement section, by means of which torque measuring device a torque characteristic variable for a torque acting on the piston shaft can be detected.

A load sensing assembly for a spinal implant includes a set screw having a central opening that extends from a first end of the set screw toward a second end of the set screw. The second end of the set screw is configured to engage with an anchoring member. The load sensing assembly includes an antenna, an integrated circuit in communication with the antenna, where the integrated circuit is positioned within the central opening of the set screw, and a strain gauge in connection with the integrated circuit. The strain gauge is located within the central opening of the set screw in proximity to the second end of the set screw.

A method and device for determining pressure applied to a robot foot device by leveraging deformation parameters of cantilever devices. The method includes obtaining a deformation parameter representing the deformation state of at least one cantilever device when subjected to pressure, determining the target position on the robot foot where the pressure is applied, and calculating the corresponding target pressure. The determination process involves utilizing predefined pressure correspondence relationships that map deformation parameters to positions and pressure ratios. The invention also provides a device with a processor and memory to execute the method, a legged robot incorporating the device, and computer-readable media containing instructions for implementing the method. This innovation enables precise pressure detection and localization for enhanced robotic performance and adaptability.

The invention belongs to the technical field of rock-soil mechanics measurement, and particularly discloses a pre-stressed anchor cable full-length stress state monitoring system and method. Comprising an anchoring section, a free section and an anchor sealing section which are sequentially connected, one end of a pre-stressed anchor cable is embedded in the anchoring section, and the other end of the pre-stressed anchor cable freely penetrates through the free section and then is fixedly connected with the anchoring section; the anchoring section stress monitoring subsystem is used for measuring the stress value of the pre-stressed anchor cable at the anchoring section; one end of the free section stress monitoring subsystem is fixedly communicated with the anchoring section stress monitoring subsystem, and the other end of the free section stress monitoring subsystem sequentially penetrates through the free section and the anchor sealing section to be communicated with the control subsystem and is used for transmitting resistance value information to the control subsystem in the stress process; and the control subsystem is used for calculating the anti-pulling safety coefficient of the anchoring section and the prestress loss of the free section so as to monitor the full-length stress state of the anchor cable. The device is high in testing precision, and stress state monitoring of all parts of the whole length of the anchor cable can be achieved.

The present invention provides a ground stress testing device and method based on distributed double-sided pressure hydraulic pillow monitoring. The device includes: a double-sided pressure hydraulic pillow, buried in a borehole on the side wall or face of a tunnel, with at least three double-sided pressure hydraulic pillows at different installation angles buried in each borehole; the double-sided pressure hydraulic pillow includes a main body, a pressure plate, a pressure-bearing liquid, a pressure conversion device connection port, a one-way valve, and a sealing nut connecting screw; the one-way valve and sealing nut are used to inject the pressure-bearing liquid into the main body of the double-sided pressure hydraulic pillow; a pressure conversion device is installed at the pressure conversion device connection port and is used to sense the pressure of the pressure-bearing liquid; a cable is connected to the pressure conversion device for communicating and transmitting the sensed pressure data to a data acquisition instrument at the orifice; and a data processing device is used to calculate ground stress in different dimensions based on the pressure data. The present invention can solve the problem that the combination of one-way hydraulic pillows affects the grouting quality, thereby resulting in insufficient representativeness of the test results.

The invention relates to a measurement roller and to a method for producing a measurement roller in order to measure at least one property, in particular the strip tension, the strip temperature, or the like, of a product being guided over the measurement roller, comprising a measurement roller body (11) which forms a circumferential surface (13) of the measurement roller, wherein the measurement roller has at least one sensor assembly (14), and the sensor assembly is formed from at least one recess (15) which is made within the circumferential surface and in which at least one sensor is received. The recess is designed to be closed by a cover (22) of the sensor assembly so as to be flush with the circumferential surface, and the cover is operatively connected to the sensor in a mechanical manner. The cover is bonded to the measurement roller body, and the cover is formed with a wall (23) on the circumferential surface.

The invention relates to the technical field of crustal stress testing, and provides a crustal stress testing device and method based on a rock core and borehole structure, the device comprises a U-shaped frame, a drilling box used for drilling a rock stratum, a drilling box used for drilling a rock stratum, a drilling box used for drilling a rock stratum, a drilling box used for drilling a rock stratum, a drilling box used for drilling a rock stratum, and a drilling box used for drilling a rock stratum and a drilling box used for drilling a rock stratum, and an adjusting assembly is arranged in the U-shaped frame, and two moving plates are slidably arranged on the outer side wall of the U-shaped frame. The test box is used for testing stratum ground stress, the test box is composed of a drilling assembly, a protection assembly and a test assembly, a driving assembly and an adjusting assembly are used in cooperation, a first motor drives a driving rod to rotate, and the driving rod drives a second driven chain wheel to rotate through a second driving chain wheel and a second chain; and the second screw drives the screw cylinders to slide in the sliding grooves, so that the heights of the four corners of the bottom of the U-shaped frame are adjusted, the U-shaped frame is in a stable state, subsequent drilling operation is facilitated, and the effect of convenient adjustment is achieved.

The application discloses a kind of PCCP pipe wire winding process in steel wire absolute stress monitoring sensor installation method, first in sensor connecting line place pre-installed special protective sleeve, flange structure is welded to dry powder cylinder;Pre-embed sensor into prestressed steel beam, start wire winding process, when steel wire is wound to sensor pre-buried hole, sensor is sent out by rotating flange structure;Sensor moves with steel wire, just with the embedding of steel wire winding in reserved hole, complete the installation of this sensor.Repeat the above steps to complete the remaining sensor installation work.The PCCP pipe wire winding process in steel wire absolute stress monitoring sensor installation method provided by the application overcomes the shortcomings in the prior art installation technology, has little effect on the original PCCP pipe quality, avoids the inconvenience caused by sensor connecting line to PCCP pipe production and construction, and realizes the convenient, orderly and efficient installation of electromagnetic elastic absolute stress sensor in PCCP pipe winding process.

Provided is a physical quantity detection device capable of not only measuring tire air pressure without using a sensor component other than a strain sensor, but also detecting a load and wear from a strain signal corrected using information on the tire air pressure. The physical quantity detection device according to the present invention detects air pressure of a tire at a reference level of a signal waveform of the strain sensor, and detects a load and wear of the tire from a strain signal corrected by the air pressure of the tire. The physical quantity detection device according to the present invention holds a reference value stored in a storage unit as a table, and detects each physical quantity by comparison with the reference value.

According to the present invention, a strain sensor (100) installed inside a device under test comprises a flat plate-form distortion-inducing plate (F), a strain gauge (112) affixed to the distortion-inducing plate, and a pair of protruding parts (PI, P2) that protrude from the distortion-inducing plate toward both sides along an in-plane direction of the distortion-inducing plate. The strain gauge is affixed to a region (SC) of the distortion-inducing plate that is sandwiched between the pair of protruding parts.