2267 results about "Axial displacement" patented technology

The invention belongs to the field of equipment coupling monitoring, and particularly relates to a dynamic coupling compensation method for thermal expansion and axial displacement, which comprises the following steps of: calculating a first characteristic value for representing reference dynamic offset of a sensor based on a three-dimensional thermal-structure coupling model by acquiring a thermal expansion parameter and axial displacement parameter sequence of a casing; calculating a second characteristic value representing the real position change of the rotor in combination with a rotor-casing axial thermodynamic model, establishing a piecewise coupling function considering a nonlinear effect, working condition self-adaption and cross interference, and eliminating the mechanical thermal inertia and measurement system lag influence through a dynamic delay compensation mechanism; an accurate axial displacement measurement total error compensation index is generated, and grading compensation actions are intelligently triggered according to error grades; the problem of measurement distortion caused by dynamic coupling of thermal expansion and axial displacement is effectively solved, and the accuracy and reliability of state monitoring of the rotating machine are remarkably improved.

The invention relates to the technical field of wind power generation. The invention provides a fan main shaft backward movement monitoring and evaluating method and system. The method comprises the following steps: acquiring an axial displacement signal, a vibration signal, a bearing temperature signal and a lubrication state parameter of a fan main shaft in real time; based on a multi-parameter fusion algorithm, performing coupling analysis on the axial displacement, the vibration amplitude, the bearing temperature and the lubrication state to generate a comprehensive risk index; performing dynamic diagnosis on the comprehensive risk index in combination with a main shaft backward movement mechanism model, and identifying at least one fault root cause of axial force imbalance, thermal stress abnormality or lubrication failure; an alarm threshold value is dynamically adjusted according to wind speed change, temperature fluctuation and load working conditions, and graded early warning is triggered based on the fault root cause; and based on historical operation data and a real-time monitoring result, evaluating a main shaft backward movement risk level, and generating a decision report containing a maintenance priority and a technical improvement suggestion. The problem that existing fan main shaft backward movement monitoring depends on manual inspection and offline detection technologies, and limitation exists is solved.

An in-situ fretting corrosion fatigue testing machine based on synchrotron radiation diffraction and three-dimensional (3D) imaging includes an axial fatigue loading system, a fretting loading system, and a corrosion environment control system, where the axial fatigue loading system includes a driving device, a load control device, and a load sensing device; the load sensing device is configured to measure an axial force and a normal force in real time; the driving device is configured to drive the load control device, thereby achieving axial displacement of the load control device; the load control device is configured to carry out axial fatigue loading of a specimen; and the fretting loading system includes a fretting wear device. The testing machine achieves real-time 3D imaging characterization of wear spot and crack morphology of a material in a fretting corrosion environment, as well as characterization of a residual stress evolution law.

A seatpost assembly having: a first portion configured to include a seat; a second portion displaceable relative to the first portion in a retracting direction to a first position and an axially extending direction to a second position retracted relative to the first position; and an active motive force to drive the displacement. The range of displacement is between a fully extended position and a fully retracted position, with a mid-stroke position between. Preferably including an external actuator that is functional to convert the motive force into linear actuation of the displacement. Preferably where the motive force is provided from manual manipulation applied externally to the seatpost assembly. Preferably including an external controller, where incremental manipulation of the controller corresponds to incremental axial displacement. Preferably including a latching mechanism to selectively restrict the axial displacement.

The invention relates to an air blower based on magnetic and gas combination axial force balance and a control method of the air blower, and belongs to the technical field of axial force regulation and control of air blowers. An axial air suspension bearing and an axial magnetic bearing are arranged in a main machine of the air blower, the axial magnetic bearing is connected with a magnetic bearing controller, and the magnetic bearing controller controls the axial position of a rotor by controlling the current of the axial magnetic bearing; an axial displacement sensor and a radial displacement sensor are arranged to detect the displacement of the rotor; and the main controller is used for controlling the starting and stopping of the axial magnetic bearing and the main machine based on the axial displacement and the radial displacement of the rotor, and sending out early warning. According to the magnetic and air combined axial force balance device, the axial magnetic bearing is used for providing active control force, the air bearing is used for providing passive support, the stability and reliability of a system are improved, and an important protection effect is achieved on core parts of an air blower.

The invention discloses a radial forging machine chuck rotation oscillation braking electro-hydraulic control system and method, and the control system comprises a position detection encoder installed on a hammer head of a forging main machine, a hydraulic servo motion controller, a high-frequency servo valve, an oscillation braking oil cylinder with the same area as an A cavity and a B cavity, and an oscillation braking device with a worm gear and a worm. The pressure sensor and the displacement sensor are integrated on the oil cylinder to form a closed-loop control loop; the control method comprises the following steps: activating an oscillation braking function and collecting hammer phase, oil cylinder pressure and displacement signals in real time; a sine control signal synchronous with the forging frequency is generated based on the brake phase of 270-360 degrees; a brake oil cylinder is driven to push the worm to axially move, and the rotating speed of the chuck is modulated through the helix angle characteristic; and the amplitude is dynamically adjusted through a displacement-pressure feedback signal, and 25MPa overrun protection is executed. The purposes of reducing the brake response delay rate, the forge piece distortion rate and the equipment impact load are achieved, and 90-620 times / min wide-frequency-domain forging is supported.

The invention belongs to the technical field of electric digital data processing and foundation engineering, and discloses a method for calculating stress and displacement of a foundation pile in a soil body under the action of a pile top axial load, which comprises the following steps of: taking the pile top as an origin of coordinates, and taking the downward direction of the longitudinal axis of a pile body as a z axis; according to the basic mechanical equilibrium condition of an infinitesimal body formed by the micro-section length randomly selected in the axial direction of the pile body, the boundary condition of the force at the top end of the pile and the deformation coordination relation between the bottom end of the pile and the foundation, characteristic variables reflecting the pile body stress and displacement distribution mode are solved; and according to the basic mechanical equilibrium condition of the infinitesimal body, the boundary condition of the force at the top end of the pile and the characteristic variables, the pile body axial displacement, the pile body axial force and the pile side surface friction resistance at different depths in the axial direction of the pile body are solved. The rapid and effective method and scientific basis are provided for design calculation and analysis of the foundation pile in the soil body under the action of the axial load of the pile top, and the method has important technical method significance and engineering application value.

The invention provides a shaft end nut locking position identification and tightening control method, and belongs to the technical field of industrial intelligent manufacturing, and the method comprises the steps: installing a high-precision inductive displacement sensor to monitor the axial displacement of a nut in real time; constructing a tightening control system of an integrated torque measurement and displacement monitoring unit; collecting real-time displacement data and eliminating interference through a sliding window filtering algorithm; identifying a nut locking critical point based on a displacement gradient analysis method; calculating an optimal torque function according to the shaft end contact mechanical mathematical model; the locking torque is accurately adjusted by adopting a temperature compensation type torque control method; a multi-mode locking intelligent identification model is used for analyzing locking process parameters and dynamically adjusting a tightening control parameter set, and accurate identification of an initial contact position and intelligent optimization adjustment of tightening parameters in the shaft end nut locking process are achieved.

According to the three-point bending high-temperature fatigue test instrument and method based on X-ray in-situ imaging, an extreme thermal field is applied to a sample based on halogen lamp infrared radiation focusing heating, a clamp ascends and descends through a servo hydraulic cylinder, and axial displacement of the ends of the sample is converted into bending moments at the two ends through the rotation characteristic of a connecting rod mechanism; therefore, a monotonous or cyclic bending external load is applied to the sample. Meanwhile, an oxidizing or inert test gas atmosphere is provided. And the acoustic emission system monitors the material damage failure starting time in real time. The device is small in size, high in precision and fast in response, and provides technical support for the damage evolution process characterization and failure damage mechanism research test of the tested sample under the heat-force-oxygen multi-field coupling action by combining a three-dimensional high-temporal-spatial-resolution X-ray characterization technology.

The invention provides an air tightness detection device of a pressure balance type plug valve, and relates to the technical field of valve air tightness detection. An air tightness detection device of a pressure balance type plug valve comprises a water pool, an adjusting mechanism, two clamping mechanisms and an end sealing mechanism, the end sealing mechanism comprises two groups of positioning assemblies and two groups of sealing assemblies, and the positioning assemblies and the sealing assemblies are communicated and used for enabling the sealing assemblies to generate axial displacement. The sealing assembly is coaxially arranged in multiple layers, the structures of all the layers of the sealing assembly are the same, the sealing assembly is used for being inserted into an inlet and an outlet of a plug valve to be detected, and by means of the multi-layer design of the sealing assembly and the design that the positioning assembly enables each layer of the sealing assembly to generate independent axial displacement, the plug valve to be detected can be detected. The sealing assembly is adapted to plug valves to be detected with different calibers; the sealing assembly has the action of expansion under the action of air source pressure, so that the part inserted into the plug valve to be detected is in sealed connection with the plug valve, and the sealing performance is ensured.

Some embodiments relate to a luer connector comprising a housing having a hollow bore therethrough, a first end, and a second end, a male luer tip supported by the housing configured to rotate with respect to the housing, the luer tip having a first open end and a passageway through the luer tip in fluid communication with the first open end, and a substantially rigid internal member extending into the passageway of the luer tip toward the first open end of the luer tip. In some embodiments, at least one of the luer tip and the internal member can be axially moveable between a first closed position and a second open position relative to the other of the luer tip and the internal member. Further, the luer tip and the internal member can cooperate such that rotation of the luer tip in a first direction relative to the housing increases an axial displacement between the first open end of the luer tip and an end portion of the internal member.

A surgical kit includes a stapling device and a powered actuation assist detachably couplable to the stapling device. The stapling device includes an anvil half section, a cartridge receiving half section, and a firing assembly including an actuation knob movable along a length of the cartridge receiving half section. The powered actuation assist includes a motor assembly, a lead screw operatively coupled to the motor assembly, a knob connector coupled to the lead screw, a battery pack, and a first switch electrically coupled to the motor to activate the motor. The knob connector is configured to detachably engage the actuation knob of the stapling device to impart axial displacement to the actuation knob. Actuation of the motor assembly imparts rotation to the lead screw, which, in turn, causes axial displacement of the actuation knob of the firing assembly.

The invention provides a high-power gearbox operation condition identification and risk early warning method, and belongs to the technical field of gearbox risk early warning based on deep learning. The method comprises the following steps: firstly, acquiring operation data of the high-power gear box under multiple working conditions based on multiple types of sensors, and preprocessing to form a time sequence data set; then, a multi-branch feature extraction model is designed, and depth features of specific working conditions such as tooth breakage, bearing faults, axial displacement and tooth backlash changes are extracted with priori knowledge as guidance; further constructing a gearbox operation condition recognition model, and realizing multi-label condition recognition and confidence evaluation through feature fusion based on an attention mechanism, Transform enhanced modeling and a graph reasoning network; finally, a multi-stage dynamic early warning module is designed, graded early warning is triggered by integrating the instantaneous state, the evolution trend and prognosis evaluation, and safe and stable operation of the high-power gearbox is guaranteed. According to the method, the recognition accuracy and generalization performance of complex working conditions and multi-fault concurrent situations are improved.

The invention relates to the technical field of machining, in particular to a cylindrical workpiece clamping device based on a milling and boring machine, which comprises a milling and boring machine workbench, a clamping and supporting mechanism for supporting two ends of a cylindrical workpiece is arranged at the top of the milling and boring machine workbench, and the clamping and supporting mechanism comprises a V-shaped seat and clamping assemblies symmetrically arranged on the V-shaped seat. The clamping assembly is obliquely arranged on the V-shaped seat so as to limit the axial displacement of the cylindrical workpiece; an elastic supporting mechanism is further arranged on the top of the milling and boring machine workbench and comprises a lower supporting base, an upper supporting base and an elastic assembly, and the elastic assembly is arranged between the lower supporting base and the upper supporting base. The top of the milling and boring machine workbench is further provided with a workpiece pressing mechanism for limiting axial rotation of the cylindrical workpiece. According to the milling and boring machine workbench, cylindrical workpieces of different sizes can be clamped and fixed, milling and boring machining of the cylindrical workpieces of different sizes can be completed, the cylindrical workpieces can be conveniently and rapidly aligned, and the milling and boring machine workbench can be suitable for milling and boring machine workbenches of various specifications.

The present invention provides a frost heave strain test device for a concrete lined channel, and relates to the technical field of freeze-thaw cycle test devices, including a frost heave body storage bin, wherein a plurality of temperature sensors are evenly arranged at intervals from bottom to top at the axis of the frost heave body storage bin; a simulated lining, wherein the frost heave body storage bin below the simulated lining is filled with a frost heave soil layer, and an axial displacement monitoring device is used to detect the axial displacement of the simulated lining; by pumping freeze-thaw medium into the medium storage bin, the freeze-thaw medium exchanges heat with the frost heave body storage bin above, thereby causing the frost heave soil layer to undergo frost heave changes. The present invention replaces the traditional precast concrete lining structure with a simulated lining, and the simulated lining can be used repeatedly, and can further simulate concrete of different strength grades, thereby greatly reducing the consumption of raw materials, being fast, efficient, energy-saving and environmentally friendly; and at the same time, the existing scattered structures are integrated, thereby reducing the occupied space.

The invention discloses polishing equipment for machining a shaft rod for manufacturing an air compressor, and relates to the technical field of polishing equipment. Comprising a sliding block which is slidably connected with a moving assembly, a square plate is fixedly connected to the top of the sliding block, a circular block is rotatably connected to the outer surface of the square plate, a through hole is formed in the outer side of the end, away from the square plate, of the circular block, and a fixing part is slidably connected into the through hole. According to the polishing equipment for shaft rod machining for air compressor manufacturing, electric push rods work to push clamping blocks to move towards the shaft rod in the middle in through holes, so that the multiple clamping blocks clamp and fix the two ends of the shaft rod, the two ends are fixed to provide bidirectional constraint for a shaft, radial and axial displacement of the shaft during rotation or stress is reduced, and the polishing effect is improved. And meanwhile, various shaft workpieces can be flexibly adapted by adjusting parameters such as the distance between the two sliding blocks and the size of the chuck, and equipment does not need to be frequently replaced or special tools do not need to be customized.

The invention discloses a laser radar windscreen wiper mechanism which comprises a track part and a moving assembly, and the moving assembly is provided with a transmission part coupled with the track part. The pivot shaft is connected to the transmission part in a circumferential rotation mode, the windscreen wiper assembly comprises a windscreen wiper base and a windscreen wiper strip fixed to the windscreen wiper base, and the windscreen wiper base is switched between an unfolding position and a containing position along with rotation of the pivot shaft; when the windscreen wiper base is located at the unfolding position and the moving assembly moves, the windscreen wiper strip can make contact with the surface of the laser radar window and form sliding fit with the surface of the laser radar window, meanwhile, the transmission part travels along the track part, the curvature change of the track part is converted into axial displacement of the pivotal shaft, and the pivotal shaft is driven by the transmission part. The laser radar window surface cleaning device has the advantages that the laser radar window surface cleaning effect is good, the structure is simple, the service life is long, and the laser radar window surface cleaning device is good in laser radar window surface cleaning effect, and the laser radar window surface cleaning device is simple in structure and long in service life.

A fastening device for releasable connection to a perforated rail of an aircraft and a method of assembly for such a fastening device. The fastening device comprises a housing having at least one locking head portion fixedly connected to the housing, at least one shear pin and an actuating pin. The locking head portion is insertable into a rail hole of the perforated rail and slidable along the longitudinal direction of the perforated rail to a locking position in which the locking head portion engages a slot portion of the perforated rail. The shear pin can be engaged with a rail hole of the perforated rail by axial displacement. The actuating pin is rotatably arranged relative to the housing and connected to the shear pin in such a way that a rotation of the actuating pin causes an axial displacement of the shear pin relative to the housing.

The invention discloses a centerless grinding machine grinding wheel guide wheel center height and end face combination adjusting device and a centerless grinding machine, which realize the adjustment of the center height and end face parallel difference of a guide wheel and a grinding wheel, simplify the adjusting process and reduce manual intervention, thereby improving the production efficiency. According to the centerless grinding machine, a guide wheel frame of the centerless grinding machine achieves grinding angle rotation through an eccentric rotation shaft, the eccentric rotation shaft is provided with a centering sliding block, and axial displacement adjustment of a guide wheel main shaft system is achieved through a sliding block displacement adjusting device. A grinding wheel spindle system is arranged on one side of the guide wheel spindle system; an eccentric shaft fastening screw is arranged on the guide wheel main shaft system and is used for fastening the guide wheel frame and the eccentric rotating shaft into a whole; the centering sliding block and the sliding block displacement adjusting screw rod are both installed in the guide wheel frame installation fixing body, the centering sliding block is matched with the fixing body sliding groove, one end of the sliding block displacement adjusting screw rod is connected with the centering sliding block, and the other end of the sliding block displacement adjusting screw rod extends out of the guide wheel frame installation fixing body and is connected with the adjusting screw rod fixing frame.

The invention discloses a high-pressure gas cylinder pressure stabilizing device used in a continuous high-temperature curing furnace. The high-pressure gas cylinder pressure stabilizing device comprises a mounting bracket, a pressing module and an inflation butt joint module, the pressing module comprises a top mounting seat and a pressing block; the top mounting seat is mounted on the mounting bracket through a top displacement adjusting mechanism; the pressing block can be mounted on the top mounting seat through a vertical displacement adjusting mechanism; the inflation butt joint module comprises a side mounting seat and an air tap male head; the side mounting seat is mounted on the mounting bracket through a side displacement adjusting mechanism; the air tap male head is mounted on the side mounting seat through an axial displacement adjusting mechanism; a tail inflation rod is fixed to the tail of the air tap male head, and a rotary connector capable of being connected with the air inlet end of the inflation air path is installed at the tail of the tail inflation rod. The device has the advantages of being convenient to use, simple and compact in structure, capable of being accurately in butt joint with the inflation nozzle on the gas cylinder and the like.

A floating joint and retainer connection device with pressure relief structure includes a hollow fixed retainer; an adaptor joint having an engaging end and a fitting end extended through the fixed retainer to an outer side thereof, and a buffering section located between the engaging and fitting ends; a slidable washer and a fixing element fitted on an outer surface of the fitting end to limit the adaptor joint from moving axially relative to the fixed retainer; an elastic element located between the fixed retainer and the slidable washer; a slidable spacer having an axially protruded section formed on one side; and a spring fitted around the buffering section with two ends pressed against another side of the abutting spacer and a shoulder portion on the adaptor joint. With the above pressure relief structure, the adaptor joint can stay at any radially displaced position relative to the fixed retainer.

A rotary bladed apparatus (100) for processing feedstocks in a process fluid is provided, said apparatus comprises means for adjusting position of a working blade cascade of the rotor (3) relative to stator components (2, 4) in a longitudinal direction of a rotor shaft (1). Adjustment is performed through axial displacement of the rotor (3) or, alternatively, through axial displacement of the reactor housing (22 A, 32A). A method for improving process efficiency and for regulating flow losses during processing of feedstocks in a process fluid, in particular, in off-design conditions in the bladed apparatus (100) is further provided. In embodiments, processing of feedstocks includes thermal- or thermochemical cracking of hydrocarbon-containing feedstock.

Some embodiments relate to a luer connector comprising relatively movable components to facilitate fluid flow therethrough. In some embodiments, a male luer tip supported by the housing can be configured to rotate with respect to the housing. In some embodiments, at least one of the luer tip and the internal member can be axially moveable between a first closed position and a second open position relative to the other of the luer tip and the internal member. Further, the luer tip and the internal member can cooperate such that rotation of the luer tip in a first direction relative to the housing increases an axial displacement between the first open end of the luer tip and an end portion of the internal member.

The invention discloses a low-cost full-load motor which comprises a rotor, a stator and a hollow rotating shaft, the hollow rotating shaft is arranged on the rotor through a rotor hub and used for transmitting torque, a bearing assembly is arranged between the hollow rotating shaft and the stator in the axial direction, and floating end bearings and fixed end bearings of the assembly are arranged at intervals in the axial direction of the hollow rotating shaft. And the hollow rotating shaft is axially positioned relative to the bearing seat by the fixed end bearing supporting point. The floating end bearing supporting point can bear axial displacement generated when the distance between the two bearings is changed due to thermal expansion of the hollow rotating shaft relative to the bearing seat, and the accumulated tolerance of components influencing the distance between the two bearings is made up. The problems that a conventional motor is high in manufacturing cost, tedious in assembly and troublesome in maintenance are solved. Besides, the motor has a full-bearing function, the output end of the motor can be connected with a load end with any load direction change and operates stably, the load end does not need to be connected after a bearing structure is switched over, and the problems of large occupied space and high weight are solved.

The invention discloses a B-axis power knife rest comprehensive performance test bench and method. The B-axis power knife rest comprehensive performance test bench comprises a base, a B-axis power knife rest, a simulation knife handle assembly, a knife rest mounting seat, an axial displacement table, a dynamometer assembly, an axial force loading assembly, a radial force loading assembly, a deformation measurement assembly, a temperature measurement assembly, a control system and a data acquisition system. The B-axis power tool rest is fixedly connected to the base through the tool rest installation base, the simulation tool handle is installed on the B-axis power tool rest, the axial displacement table is installed on the base, the power measuring assembly and the axial force loading assembly are coaxially combined and installed and then fixedly connected to an axial displacement table moving plate, and the radial force loading assembly and the deformation measuring assembly are installed on an axial displacement table fixing plate. The testing device is simple and compact in structure, large in loading force range and capable of supporting performance testing of B-axis power tool rests of various models, various stations and under multi-dimensional force loading; the test method is simple.

The invention relates to the technical field of industrial water treatment equipment, and discloses an intelligent flushing self-cleaning filter system for industrial water treatment. A dynamic suspended matter monitoring module of the system collects three-dimensional distribution data of deposits on the surface of a filtering medium in real time, and mixed deposition characteristics of suspended solids and oil stains are recognized through a multispectral imaging technology; the differential pressure trigger control module establishes a mapping relation between sediment thickness and fluid resistance according to the three-dimensional distribution data, and generates a cleaning trigger instruction when the real-time differential pressure data reaches a dynamic threshold interval; the spiral trajectory planning module analyzes the cleaning trigger instruction, and generates a composite motion trajectory containing a rotation angular velocity and an axial displacement rate in combination with the current position of a suction nozzle and a filter screen topological structure; the multi-mode flushing execution module synchronously adjusts torque output of a hydraulic motor and linear displacement of a piston cylinder based on the composite motion trail, so that a suction nozzle covers the whole effective filtering area of a filter screen along a spiral path.

The invention relates to a composite percussion drilling speed increasing tool, and belongs to the technical field of drilling tools. The reciprocating hammering unit comprises a hammer body and an impact hammer, the hammer body is axially and slidably connected into the sleeve, the impact hammer is rotatably connected into the hammer body, a reversing sleeve is rotatably connected into the impact hammer, a reversing cabin is arranged on the reversing sleeve, and a reversing runner hole is formed in the hammer body; the flow channel switch unit comprises a baffle ring arranged on the surface of the hammer body and a transmission mechanism connected between the sleeve and the baffle ring, and the transmission mechanism is used for converting axial motion of the baffle ring into rotary motion so as to open or close the reversing flow channel hole. When the drilling tool is lifted, the axial movement of the baffle ring can be converted into rotary movement, so that the baffle ring rotates relative to the hammer body while axially displacing along with the hammer body, a reversing flow channel hole is shielded, and high-pressure drilling fluid cannot flow into a reversing cabin, so that high-frequency composite impact is stopped, vibration and abrasion caused by idling are avoided, and the service life of the drilling tool is prolonged. And the service life and the safety of the tool are improved.

The utility model provides an output assembly for a joint module of a robot, which comprises a gear driving group with a first gear and a second gear, the first gear is used for being connected with a driving rotating shaft of a motor assembly of the joint module, the second gear is in transmission fit with the first gear, the first gear has a first rotating direction rotating around the driving rotating shaft, and the second gear has a second rotating direction rotating around the driving rotating shaft. The second gear has a second rotation direction different from the first rotation direction; and the output shaft is used for supporting the output piece, the output shaft is fixedly connected with the second gear so as to transmit power from the second gear to the output piece, and a clamping device for limiting axial displacement of the output piece is arranged on the output shaft. The original power rotation direction and load of the motor assembly are changed through the gear driving set, when the joint module is assembled, the structural arrangement in the module is more flexible, the overall space is smaller, and the clamping device facilitates more stable driving rotation of the output piece and more accurate control.

A surgical instrument includes a decoupling mechanism and a loading unit. The decoupling mechanism includes a driver coupling, an overstroke sled, a proximal driver, and a distal driver. The overstroke sled includes bosses configured to slidably engage slots of the driver coupling. The distal driver is coupled to a housing of the driver coupling for concomitant rotation therewith. A drive assembly of the loading unit is coupled to the distal driver such that rotation of the distal driver causes axial displacement of the drive assembly. The decoupling mechanism is transitionable between a first state, in which, rotation of the proximal driver of the decoupling mechanism rotates the driver coupling and the distal driver, thereby advancing the drive assembly, and a second state, in which, rotation of the proximal driver disengages the overstroke sled from the driver coupling to enable rotation of the overstroke sled relative to the driver coupling.

The invention belongs to the technical field of engineering protection and treatment, and discloses an anchoring structure internal force calculation method for an internal anchoring type anchor rod, and the method comprises the steps: building a first shear stress coupling relation between axial displacement and an anchor rod mortar interface according to the stress balance condition, axial stress and axial displacement of the anchor rod; presetting a load transfer mode from an anchor rod to a mortar body to a surrounding rock body in the anchoring structure based on the shear hysteresis model, and constructing a second shear stress coupling relationship between the axial displacement and the shear stress of the anchor rod mortar interface and the shear stress of the mortar surrounding rock interface according to the load transfer mode; based on the first shear stress coupling relation, the second shear stress coupling relation and stress boundary conditions of the anchoring structure, an anchor rod axial force analytical equation and an internal shear stress analytical equation set of the anchoring structure are constructed; and calculating the axial force and the internal shear stress of the anchor rod of the anchoring structure according to the physical parameters and the construction parameters of the anchoring structure. According to the invention, the transmission analysis of the drawing load in the anchoring structure is realized, and the displacement axial force and interface shear stress distribution of the internal anchoring type anchor rod can be calculated.