702 results about "Vertical load" patented technology

To ensure the rigidity of a floor panel against a load in a vertical direction in an electric vehicle having a step in the floor panel.SOLUTION: A rear floor panel 10 of an electric vehicle has an inclined part 16 that extends while inclining upward as it heads for backward from a rear end of a plane part 12. A floor cross member 20 is disposed in a front part of the inclined part 16 on the side of an upper surface of the rear floor panel 10. An under-floor reinforcement 30 is disposed in the front part of the inclined part 16 on the side of a lower surface of the rear floor panel 10. A front end of the under-floor reinforcement 30 is disposed ahead of the front end of the inclined part 16, and a rear end of the under-floor reinforcement 30 is disposed on the inclined part 16. The under-floor reinforcement 30 and the floor cross member 20 are joined with the rear floor panel 10 therebetween.SELECTED DRAWING: Figure 6

The invention discloses a mechanical property testing method for an inflatable wing, and belongs to the technical field of aerospace testing. The method comprises the following steps: S1, wing installation: clamping an inflatable wing on a test board, and enabling a chord plane of the inflatable wing to be perpendicular to a loading direction; s2, applying a load: driving a loading mechanism to apply a vertical load to the inflatable wing through an external universal tester; s3, data acquisition: synchronously acquiring a deflection curve and stress distribution data by using a displacement measurement unit and a strain detection unit; and S4, failure judgment: when monitoring that the shape of the deflection curve suddenly changes or the strain data exceeds a threshold value, judging that the inflatable wing is subjected to buckling failure, stopping loading and recording the maximum load. The test bench serves as an expansion platform of a universal tester, can be adapted to a large-size inflatable wing, does not need special equipment, reduces the cost, realizes cooperative monitoring of displacement and strain data, realizes closed-loop control of inflation air pressure-deformation-load, and remarkably improves the test precision and the data reliability.

Disclosed herein are an adhesion coefficient determination method and apparatus, and a vehicle, a medium and a program product. The method comprises: acquiring sensor data collected by at least one sensor of a vehicle; on the basis of the sensor data, determining travelling information of the vehicle, wherein the travelling information comprises at least one of the following: a slip rate, longitudinal stiffness, a tire longitudinal force, a tire lateral force, a tire vertical load, a front-axle lateral force and a rack force; on the basis of the travelling information, or the sensor data and the travelling information, determining at least one reference adhesion coefficient and a confidence level of each reference adhesion coefficient, wherein the at least one reference adhesion coefficient comprises at least one of the following: a steady-state adhesion coefficient, a dynamic adhesion coefficient, a longitudinal adhesion coefficient and a lateral adhesion coefficient; and on the basis of the at least one reference adhesion coefficient and the confidence level of each reference adhesion coefficient, determining a target adhesion coefficient of the vehicle and a confidence level of the target adhesion coefficient. The method in the embodiments of the present application improves the accuracy of adhesion coefficient determination.

The invention discloses a pressure relief and shock absorption method for a deep high-stress key pillar. (a) a top plate is arranged at the top of the ore pillar, four inclined kerfs are alternately arranged in a top plate area around the ore pillar, and the kerfs are symmetrically arranged in a cross shape; (b) eight anchor rod drill holes perpendicular to the top plate are formed in the interval area between the adjacent kerfs and the periphery of the ore pillar, perpendicular anchor rods are arranged in the anchor rod drill holes, and an orthogonal supporting network formed by the perpendicular anchor rods is formed; and (c) preferentially releasing the bending energy of the roof through the kerf, reducing the vertical load of the ore pillar, and meanwhile, forming a pressure arch effect by applying the prestress of the vertical anchor rod, thereby realizing space-time coupling support of the kerf and the anchor rod, and inhibiting roof separation and dynamic disturbance. The invention has the characteristics of excellent stress transfer, strong vibration suppression and excellent overall column stability.

The invention relates to the technical field of building structure reinforcement, and discloses a calculation method for increasing photovoltaic reinforcement on the roof of an existing building, which comprises the following steps of: constructing a load distribution model containing a vertical load layer (self weight of a photovoltaic module and accumulated snow load) and a horizontal load layer (wind load and earthquake load), and cooperatively transmitting the load through a node support system and an anchoring connecting piece; generating a roof reinforcement analysis model containing a supporting node model and a connecting component model; generating a reinforcement assembly sequence according to the photovoltaic system installation position distribution information and the reinforcement analysis model; generating a load distribution scheme based on the component sequence; and the distribution scheme and the reinforcement analysis model are combined, and the supporting node arrangement density and the connecting component material specification are determined through multi-objective optimization. According to the method, multi-load and structure aging are comprehensively considered, multi-target optimization is achieved, the safety and economical efficiency of the reinforcement scheme are improved, and the method is suitable for photovoltaic reinforcement calculation of the existing building roof.

The invention discloses a drive-by-wire four-wheel independent steering system and a roll risk assessment method thereof, and the method comprises the steps: building a vertical load distribution model, so as to monitor and feed back the time-varying property and nonlinear change of a vertical load in real time; establishing a real-time roll risk assessment model, designing a dynamic compensation algorithm to correct the model, and generating a roll risk prediction value sequence of a future working condition through a time sequence analysis and prediction algorithm; and establishing a roll risk early warning model, and generating different levels of safety early warning signals based on a risk level judgment mechanism. According to the invention, accurate measurement of the vertical load can be realized under the limit working condition, and real-time roll risk early warning is provided in combination with the dynamic behavior of the vehicle, so that the safety and reliability of the intelligent driving system are improved.

A utility wall is provided for a multi-story building having load bearing walls that are able to withstand vertical loads and lateral loads. The building may be a low-rise building or a mid-rise building. The utility wall, as well as the load bearing walls, floor-ceiling panels, corridor panels, and other parts of the building, are pre-manufactured off-site and then installed on-site at the site of the building. The utility walls are hung from the load bearing walls and provide utilities to the various stories of the building.

The present invention relates to a liquefied gas storage facility comprising: a load support structure having a bottom wall and a vertical load support wall, the vertical load support wall being composed of N vertical load support panels; and a can comprising a bottom wall and a vertical wall, the bottom wall comprising a plurality of angular sectors, the corrugated sealing membrane of each angular sector having a first corrugation, the corrugated sealing membrane of each angular sector comprising a plurality of metal plates arranged to form a loop portion, the loop portion comprises a set of complete metal sheets in which the total number of first corrugations present on the loop portion increases in the direction of the vertical wall, said total number increasing only per M consecutive loop portions, where M is a natural integer greater than or equal to 2.

The invention discloses a high-bearing-capacity offshore wind power pile foundation structure and a construction method thereof. The high-bearing-capacity offshore wind power pile foundation structure comprises a suction bucket, a vertical rod installed in an inner cavity of the suction bucket and coaxially fixed to the suction bucket, a stabilizing assembly dividing the inner space of the suction bucket into a plurality of independent cavities and a leveling assembly. By arranging the stabilizing assembly and the leveling assembly, the suction bucket is divided into a plurality of independent cavities through the stabilizing assembly, differential pressure leveling is conducted in a multi-cavity independent water pumping mode in the stage of preliminary contact with the seabed, the perpendicularity of the suction bucket in contact with the seabed is guaranteed, and in the stage of downward insertion of the bucket body part, a high-pressure nozzle is started again to conduct secondary posture fine adjustment; according to the dynamic deviation correcting device, the dynamic deviation correcting capacity is achieved in different time periods in the penetration process, the dynamic deviation correcting device can adapt to uneven local hardness of a seabed or slight drifting of the posture of a barrel body in the downward insertion process, inclined insertion and penetration failure caused by posture unbalance of the suction barrel are avoided, and the vertical bearing performance and the anti-overturning stability of a pile foundation are further enhanced.

The invention provides a method for determining advanced controllable roof cutting parameters of a thick and hard roof of a coal mine stope face, which comprises the steps of engineering general situation field investigation and survey, in-situ geomechanical test, goaf roof thickness / thin plate theoretical analysis, coal pillar or filling body vertical load theoretical analysis, numerical simulation calculation and engineering test verification. Analyzing the mechanical behavior of the working face roof based on a plate theory, verifying the correctness of a theoretical model through measured data, and changing boundary conditions to predict the mechanical behavior of the roof after roof cutting; the method comprises the following steps: analyzing the vertical load of a coal pillar or a roadside support body after roof cutting and the influence rule of roof cutting height and angle on the roadside support body through a mechanical model, and preliminarily obtaining better roof cutting parameters; by establishing a numerical model of different topping parameter combinations, different performance parameters are used for comparing and evaluating different topping parameters, so that the optimal topping parameter is determined; according to the method, advanced controllable roof cutting of the hard roof of the coal seam is achieved, and the mine pressure treatment effect in mining is predicted.

The invention relates to an MVMFormer-based prefabricated bridge rubber support deformation detection method and system, which are used for carrying out compression and shear performance tests on prefabricated bridge rubber supports made of different materials. Obtaining different deformation diagrams under a vertical load in the testing process, a vertical load limit diagram when deformation and damage occur, a deformation diagram in the simulation process, a limit diagram under single-side stress when deformation and damage occur, a deformation diagram in the simulation process and a transverse force limit diagram when deformation and damage occur; forming a classification data set by using the deformation graph, the corresponding experiment working condition and the non-deformation original graph, and training a classifier by using the classification data set; and identifying the experimental working condition of the image to be detected by using the classifier, and then performing segmentation. Corresponding limit diagrams and deformation diagrams under different experiment working conditions are obtained according to compression and shear performance tests, semantic segmentation is carried out on the basis, and detection and timely early warning of the phase rubber support deformation are achieved.

The invention provides a separated anti-seismic bridge abutment structure in a high-intensity earthquake area. The anti-seismic bridge abutment structure comprises a pile foundation; the platform body is mounted above the pile foundation and is connected to the lower part of the main beam through a seismic mitigation and isolation support; the box-type back wall is mounted at the rear upper part of the platform body and is not connected with the platform body; one end of the limiting pull rod is mounted on the transverse partition plate of the main beam, and the other end is mounted on the box-type back wall; the anti-lateral pile is mounted below the box type back wall; the rear portion of the box type back wall and the peripheral sides of the pile tops of the anti-lateral piles are filled with energy dissipation materials. Collision buffering materials are filled between the main beam and the box type back wall. From the perspective of'function separation to improve system reliability ', the vertical bearing function and the horizontal bearing function of a traditional seat-type bridge abutment are separated, and the horizontal bearing structure is specially designed, so that the problems of girder falling and the like caused by insufficient limiting capability of the traditional seat-type bridge abutment on a girder in the longitudinal bridge direction in an earthquake are solved, and the safety of the system is improved. And the anti-seismic requirement is fully met.

The utility model belongs to the technical field of bridge engineering, and particularly relates to a structure for widening a new bridge and an old bridge flexibly by adopting telescopic steel bars, which comprises a bridge web, a mounting groove, a fixing plate unit, the steel bars, pipe bodies and a tensile combination block unit, so that 1, a combined sleeving structure of a plurality of steel bars and a plurality of pipe bodies has enough flexible deformation capability, and the tensile combination block unit can be used for widening the new bridge and the old bridge; the new and old bridges are allowed to generate proper relative displacement in the vertical direction and the longitudinal direction; 2, the combined sleeving structure is still an integrated connecting structure, so that the vertical load can be fully transmitted, and the old bridge is further protected; 3, the new bridge and the old bridge are difficult to be far away from each other greatly in the transverse bridge direction, so that the basic function of widening connection is realized; and 4, when the fixing plate unit is installed, the new and old bridge structures do not need to be greatly changed, and the structural strength of the new and old bridges cannot be greatly damaged.

The invention belongs to the technical field of gravity energy storage, and particularly relates to a high-channel-utilization-rate gravity energy storage system based on vertical circulation operation, which comprises at least one energy conversion shaft, at least one empty return shaft, a top shaft transfer section and a bottom shaft transfer section, the top hoistway transfer section is communicated with the upper part of the energy conversion hoistway or the empty return hoistway through reciprocating translational motion, and the bottom hoistway transfer section is communicated with the lower part of the energy conversion hoistway or the empty return hoistway through reciprocating translational motion; racks are arranged on the inner walls of the hoistways, gears are arranged on the elevator, and the racks and the gears are meshed to achieve movement of the elevator in the circulating hoistways. Compared with an existing steel wire rope or chain annular conveying chain scheme, the conveying load is transferred to different heights of the vertical channel well wall in a distributed mode, the bottom and top horizontal transverse moving mechanism and the vertical load are transferred to a horizontal wheel rail, the conveying capacity is higher, the service life is longer and more reliable compared with a traditional circulating conveying chain cable, and the later operation and maintenance cost is reduced.

The invention belongs to the field of analog simulation, and particularly relates to a runway dynamic friction coefficient real-time simulation method, system and equipment based on multi-source data. The problem that taxiing simulation is insufficient in authenticity is solved. The method comprises the following steps: acquiring runway surface temperature data, accumulated water depth and / or accumulated snow depth; judging a runway type based on the runway texture features, matching a basic friction coefficient according to the runway type, and dynamically correcting the basic friction coefficient in combination with the accumulated water depth and / or accumulated snow depth and runway surface temperature data to obtain a corrected friction coefficient; acquiring a tire vertical load, an initial sideslip angle and tire pressure data of the aircraft, calculating a tire lateral force, and calculating a final friction coefficient in combination with the updated sideslip angle, the corrected friction coefficient and the sideslip attenuation coefficient; and inputting the data into a ground taxiing model of the flight simulator to realize real-time simulation. Through the attenuation effect of the dynamic process on the friction coefficient, the simulation result better fits the real runway state.

The invention discloses a true triaxial dynamic and static combined loading and multi-field coupling test device and method. The test device comprises a test cavity; the loading system comprises an axial loading device, a Hopkinson pressure bar, a longitudinal loading device and a vertical loading device; the axial loading device is configured to apply an axial load to the test coal sample; the Hopkinson pressure bar is configured to apply an impact load to the test coal sample; the longitudinal loading device is configured to apply a longitudinal load to the test coal sample; the vertical loading device is configured to apply a vertical load to the test coal sample; the gas supply system comprises a gas bottle and is configured to inject gas into the test cavity; the fiber bragg grating monitoring system comprises a fiber bragg grating sensor and a fiber bragg grating demodulator, and the fiber bragg grating demodulator is configured to be used for sensing a change signal of a strain field of the test coal sample under the loading action of the loading system; and the ultrasonic phased array monitoring system comprises an ultrasonic transducer and is used for sensing an ultrasonic signal of the test coal sample under the loading action of the loading system.

The invention relates to the technical field of building structure monitoring, in particular to an intelligent monitoring system for a light steel structure, which comprises an environmental data acquisition module used for acquiring environmental data in a monitoring period, a structural data acquisition module used for acquiring parameters of the light steel structure and structural deformation data in the monitoring period, and a stress analysis module used for analyzing the parameters of the light steel structure and the structural deformation data in the monitoring period. The system comprises an overall wind pressure analysis module for analyzing the overall wind pressure state of the light steel building, a lateral load analysis module for constructing a wind force vector and analyzing the stress state of a ground beam column, a transverse deformation monitoring module for analyzing the transverse deformation state of the light steel building, and a vertical load analysis module for analyzing the overall wind pressure state of the light steel building. The analysis module is used for analyzing the vertical load state of the light steel building in the monitoring period, and the stability analysis module is used for analyzing the stability of the light steel building in the monitoring period. The monitoring efficiency of the light steel structure is effectively improved.

The invention provides an intelligent storage roadway stacking machine, and relates to the technical field of roadway stacking machines, the intelligent storage roadway stacking machine comprises a vertical sliding rod and a taking and placing assembly, the taking and placing assembly comprises a supporting frame slidably connected to the vertical sliding rod, one end of the supporting frame is fixedly connected with a transverse rod, and the two ends of the interior of the transverse rod are slidably connected with limiting sliding rods; a concave block is fixedly connected to the inner side of the limiting sliding rod, a straight rack is fixedly connected to the outer side of the concave block, a first supporting plate is fixedly connected to the interior of the straight rack, a torsion shaft is fixedly connected to the interior of the first supporting plate, auxiliary clamping blocks are rotationally connected to the two ends of the torsion shaft, and a supporting assembly is fixedly connected to the outer side of the taking and placing assembly. According to the triangular supporting structure, the geometric stability principle is utilized, loads in the vertical direction are evenly dispersed to all supporting points, deformation or shaking caused by single-point stress is reduced, transverse deviation of the supporting frame in the moving process is limited, and the strict vertical movement track of the supporting frame along the vertical sliding rod is ensured.

The invention relates to a multifunctional test loading device for simulating bending shear torsion performance of a wind power tower, which comprises a counter-force column, a counter-force longitudinal beam, a counter-force cross beam and four actuators, and is characterized in that the counter-force cross beam is fixed at the top of the counter-force longitudinal beam through a bolt and is connected with a first actuator for axially applying pressure; the bottom of the tower drum is connected and fixed through a loading support with a kidney-shaped hole, and the end of the tower drum is connected with a loading beam through a conversion piece and abuts against a first actuator for axial pressure applying and loading. A fourth actuator on one side of the reaction wall is used for applying horizontal shearing force and torque; second and third actuators on the upper and lower sides of the counter-force longitudinal beam are used for applying bending moment; according to the device, loading of multiple load types can be achieved on the tower drum, the complex stress condition possibly borne by the tower drum in the actual use process can be simulated, and loading of any change of a single load of the tower drum can also be simulated; the device is suitable for loading and fixing tower barrels of different types and sizes; and the influence of torsional deformation and horizontal displacement on vertical load loading can be reduced through structural measures.

The invention relates to the technical field of bridge testing, and discloses a bridge beam plate load testing device for road and bridge construction, which comprises an underframe frame and a testing frame, the underframe frame and the testing frame are connected through at least four shock absorbers, the testing frame is internally provided with a bearing assembly for bearing a to-be-tested bridge beam plate, and the bearing assembly is connected with the shock absorbers. A main sensor is arranged above the bearing assembly, and a main testing mechanism used for carrying out load testing on the bridge beam plate during bearing is arranged at the top of the bottom frame. According to the bridge beam plate load testing device for road and bridge construction, the two testing pieces are driven by the driving piece, the two testing pieces can be matched with the load piece to carry out vertical load testing work on a bridge beam plate, and the two testing pieces can be matched with the auxiliary testing mechanism to carry out lateral load testing work on the bridge beam plate; load testing work in multiple aspects is achieved, and the functionality and practicability of the load testing device are further improved.

The invention discloses a support design method of a strong support steel frame based on layer critical stiffness, and relates to the technical field of building reinforcement. Comprising the steps of calculating the critical support stiffness of a frame column and drawing a nomogram of the critical support stiffness of the frame column, calculating the critical support stiffness of a shear type support steel frame layer of each floor, calculating the critical support cross-sectional area of the shear type support steel frame of each floor under the action of no horizontal load, and calculating the equivalent support area required for resisting the horizontal load. Calculating the critical support area of each floor frame under the action of a vertical load and a horizontal load; calculating the cross section area of a tension critical support single diagonal rod; and selecting the cross section model of a shear type support. The invention discloses a support design method of a strong support steel frame based on layer critical stiffness, provides design steps of a shear type strong support for the steel frame, and in the method, discloses a calculation formula of the structural layer critical support stiffness of the shear type support steel frame and provides a nomogram convenient for engineering application.

The invention discloses a load distribution method and system for multi-pier coordination of a scouring damaged beam bridge and a storage medium. The method comprises the steps that horizontal and vertical loads acting on a bridge superstructure are obtained; calculating a load distribution result of a vertical load acting on the upper structure of the bridge on the pier according to the counter-force influence line; calculating the horizontal load which acts on the upper structure of the bridge and is distributed to the pier by adopting an iterative method, namely calculating the pier top displacement according to the latest calculated horizontal load of the pier, calculating the equivalent stiffness according to the latest calculated pier top displacement, recalculating the horizontal load distributed to the pier according to the latest calculated equivalent stiffness, and calculating the horizontal load of the upper structure of the bridge according to the calculated equivalent stiffness. The pier top displacement is the pier top displacement of the pier-pile foundation under the conditions of scouring damage, flood load and vehicle load. According to the method, the influence of scouring damage, flood and vehicle load on load distribution is considered, and the accuracy of full-bridge bearing characteristic analysis is improved.

The utility model discloses a universal test bench for axle fatigue test, which belongs to the field of axle test equipment and comprises an upper support assembly, a lower support assembly and an axle mounting seat. The upper support assembly comprises an upper support main body, and a vertical loading hydraulic cylinder for applying a vertical load to the axle is arranged on the upper support main body; the lower support assembly is fixedly connected with the upper support assembly, and the lower support assembly comprises a gantry bridge frame; the axle mounting seat is used for being mounted below a gantry bridge frame, the axle mounting seat comprises a rigid bridge mounting seat for mounting a test rigid bridge and a swing bridge mounting seat for mounting a test swing bridge, and the rigid bridge mounting seat and the swing bridge mounting seat have the same connecting port with the gantry bridge frame. According to the invention, a real stress condition can be simulated relatively truly, and different types of axle tests can be carried out.

The utility model relates to a door type flat plate net rack closed workshop under a steel plant area limited space, which comprises a vertical bearing and a roof net rack, the vertical bearing is divided into an upper section and a lower section, the lower section is a steel column, the upper section is a net rack structure consisting of a connecting rod piece and a bolt ball, the net rack structure is arranged on the steel column through a connecting support, and the roof net rack is arranged on the steel column. The roof net rack is formed by connecting a connecting rod piece and a bolt ball, and the net rack structure is connected with the roof net rack through the bolt ball and the connecting rod piece. The problem that double steel stand columns cannot be arranged in a limited space is solved, the steel structure factory building is more compact in structure, the bearing capacity of the steel columns is reduced, the size and depth of a buried foundation are correspondingly reduced, interference between surrounding buildings and structures is avoided, the construction cost is reduced, and the steel structure factory building is suitable for being built in a space-limited site.

The embodiment of the utility model provides a five-axis tool sharpener. The five-axis tool sharpener comprises a base table, a tool rest and a tool rest, the cutting device comprises a cutting mechanism and a lifting assembly, the lifting assembly is installed on the base table and connected with the cutting mechanism, and the lifting assembly can drive the cutting mechanism to ascend and descend relative to the base table; the balance assembly is installed on the base table and connected with the lifting assembly, and the balance assembly provides driving force for the lifting assembly so as to balance the vertical load of the lifting assembly; the mechanical arm is installed on the lifting assembly and used for transferring the workpiece to be machined to the bottom side of the cutting mechanism. On one hand, the mechanical arm and the cutting mechanism are both installed on the lifting assembly, so that the mechanical arm can synchronously move along with the cutting mechanism, then feeding of the mechanical arm can be flexible, on the other hand, the balance assembly can provide driving force for the lifting assembly to balance the vertical load of the lifting assembly, and therefore the five-axis tool sharpener can balance the gravity of the main shaft.

The invention provides a coupler force calibration method and device, and the method comprises the steps: obtaining a three-point bending beam model which is used for representing a beam structure formed by the direct connection of a coupling end of a first coupler and a coupling end of a second coupler in a coupling state, and simplifying the tail part of the first coupler into a clamped constraint, the tail of the second car coupler is simplified to be clamped constraint, and the clamped constraint limits the vertical displacement and the rotation angle of the tail of the corresponding car coupler at the same time; applying a vertical load at a preset position on the first car coupler; the bearing reaction force borne by the tail of the target car coupler under the action of the vertical load is determined, so that the calibration relation between the vertical load and the bearing reaction force of the tail of the target car coupler is constructed, and the bearing reaction force of the tail of the target car coupler is the vertical force borne by the tail of the target car coupler and transmitted at the preset position on the first car coupler; the target coupler is one of the first coupler and the second coupler. According to the invention, the accuracy of vertical load transmission calculation is improved.

Embodiments of the present invention provide an apparatus comprising an upper plate and a lower plate. A plurality of horizontal load cells and a plurality of vertical load cells positioned on the lower plate to measure the forces in an x-direction, a y-direction, and a z-direction. A plurality of holes provided on the upper plate. A plurality of pins are fixed on the horizontal load cells and inserted into each correspondence hole. A plurality of spherical balls placed between the horizontal load cells and the upper plate. The spherical balls are provided to determine the force in the z-direction and the movement of the upper plate in the x-direction and the z-direction. A plurality of first sensor and a plurality of second sensors are provided over the upper plate and around the upper plate over the wall, respectively.

The invention relates to the technical field of rail transit vehicles, in particular to a car coupler load calibration system. The coupler load calibration system comprises a base, a first coupler seat and a second coupler seat, wherein the first coupler seat and the second coupler seat are oppositely arranged in a spaced mode in the first direction and used for installing coupler couplings. A longitudinal load loading device capable of providing a longitudinal load, a transverse load loading device capable of providing a transverse load and a vertical load loading device capable of providing a vertical load can be mounted on the base. In addition, the calibration object is the two couplers which are connected in a coupling mode, and compared with the mode that the calibration object is an independent coupler, the method can effectively simulate the stress condition of the couplers under the actual working condition so as to improve the test accuracy. Meanwhile, three-direction loads can be loaded at the same time, the coupling condition of three-direction force of the coupler under the actual working condition is simulated, and the performance of the coupler under the complex real stress environment is tested.

The seamless telescopic device comprises a telescopic device body and an elastic body, and the telescopic device body comprises a simply supported beam plate, a bottom plate assembly and a plurality of telescopic pieces; the bottom plate assemblies are symmetrically arranged at intervals of a certain distance S. The two ends of each simply supported beam plate are located on the inner sides of the ends, close to the distance S, of the bottom plate assemblies correspondingly, buckled with the bottom plate assemblies, cover the distance S and are used for adapting to deformation of a main body structure, and the telescopic pieces are symmetrically arranged between the simply supported beam plates and the end vertical faces of the bottom plate assemblies. The elastic body covers the upper portion of the telescopic device body and completely wraps the telescopic pieces, when the lower portion S of the simply supported beam plate changes, the telescopic pieces integrally and synchronously stretch out and draw back to deform, the telescopic pieces are symmetrically distributed in two sections of telescopic space between the simply supported beam plate and the bottom plate assembly, the load acting time is greatly shortened, and the load contact area is greatly reduced. And therefore, the safety and durability of the telescopic device are ensured, and the elastic body can effectively bear vertical loads in the constraint space.

The invention discloses a cable laying pulley load performance test device, and belongs to the technical field of pulley performance test. The sliding rails are symmetrically arranged, the placement platform and the bottom baffle are in sliding fit, the detection assembly is located above the placement platform, the placement platform is used for bearing a tackle, the bottom baffle is used for auxiliary supporting, and the detection assembly is used for applying a vertical load. According to the pulley load performance test device for cable laying, by adjusting the relative positions of the placement platform and the bottom baffle plate on the slide rail, supporting and fixing spaces of cable pulleys with different sizes and structural forms can be flexibly adapted; the special-shaped tackle has the advantages that the special-shaped tackle is matched with the lockable sliding block and the self-centering structure, so that the technical problems that the special-shaped tackle is difficult to fix and the loading center deviates are solved, the lateral displacement or overturning of the tackle when the tackle is pressed is effectively limited, and the stability and safety of load performance detection and the accuracy of data are improved.