481 results about "Ground support" patented technology

The invention relates to an autonomous navigation method for lunar satellite formation and a second-order filtering navigation architecture, and the autonomous navigation method comprises the steps: obtaining orbit prediction information based on a kinetic model of the lunar satellite formation, and obtaining collaborative theory observation information based on a collaborative observation model, carrying out fusion processing on orbit prediction information, collaborative theory observation information and multi-source observation data of in-orbit observation by using an extended Kalman filtering algorithm, and estimating an absolute orbit state of the lunar satellite formation; establishing a relative motion model of the slave satellite under the local coordinate system of the master satellite, and establishing a relative measurement model; and taking the absolute orbit state of the master satellite as a reference datum, obtaining a preliminary prediction relative orbit state based on the relative motion model of the slave satellite, and obtaining relative measurement data including distance measurement and angle measurement based on the relative measurement model, and fusing the relative measurement data and the preliminarily predicted relative orbit state through an extended Kalman filtering algorithm to estimate the relative orbit state of the slave satellite. Navigation may be independent of ground support.

The invention provides an airport parking space allocation method and system based on gridding space-time layering, and the method comprises the steps: building an airport space-time grid model through obtaining and space-time correlation analysis of multi-source basic data, such as real-time flight dynamic data, parking space physical attributes, historical operation efficiency and ground guarantee resource states; then, on the basis of multi-level feature constraint fusion, adaptive weight dynamic adjustment and sparse constraint low-dimensional reconstruction, adaptive optimization facing complex space-time requirements and delay disturbance is achieved, and an airport parking space distribution matrix is obtained; generating an anti-conflict camera configuration set in combination with dynamic coupling and conflict verification of ground support resources; and finally, through physical constraint real-time inspection and historical efficiency mode matching, generating an optimal distribution matrix of the airports, so that the overall use efficiency and the operation guarantee capability of airport airport resources are remarkably improved, and the airport operation efficiency and the service quality are improved.

The invention discloses a civil aviation airport ground guarantee resource scheduling method and device and a medium, and relates to the technical field of artificial intelligence, and the method comprises the steps: obtaining a real-time flight plan, and constructing a guarantee resource coupling network based on the real-time flight plan and a predefined guarantee flow rule base; performing conflict prediction and conflict influence analysis on the guarantee work of the future flight by traversing the guarantee resource coupling network, and generating a structured conflict early warning report; triggering an on-demand scheduling mechanism of a virtual resource pool for querying and allocating available resources on demand according to the structured conflict early warning report, querying available shared guarantee resources in the virtual resource pool, and generating a conflict resolution scheme which can be directly executed; and executing the conflict resolution scheme, monitoring an execution result through the Internet of Things data, feeding back the execution result to the guarantee resource coupling network, and calibrating a duration parameter in the guarantee resource coupling network. Through the constructed support resource coupling network, the prospective performance and the cooperative robustness of ground support scheduling are improved.

A truck bed mounted carrier system includes a frame assembly installable in a truck bed with lateral supports and outer main supports, inner supports that slide within the outer main supports, a center outer support, and a second inner support that slides within the center outer support. A carrier frame coupled to the frame assembly extends from and retracts into the truck bed, supported by radius supports that provide structural integrity when extended. The system features a pulley assist mechanism with gas springs that creates a counterbalance force, a mechanical drive assembly with sprocket and roller chain for movement control, and deployable transport stands for ground support during loading operations. Adjustable bed rail struts with locking mechanisms secure the system to the truck bed without permanent modification. Low-friction materials and strategically positioned slides ensure smooth operation throughout the extension and retraction cycles.

The invention relates to the technical field of surveying and mapping equipment, and discloses a surveying and mapping instrument with soft and hard ground switching dual-mode supporting legs, the surveying and mapping instrument comprises a debugging platform and a surveying and mapping instrument body, and a multi-stage horizontal adjusting assembly for rapidly adjusting and leveling the surveying and mapping instrument body is arranged between the debugging platform and the surveying and mapping instrument body. The bottom of the debugging platform is provided with at least three sets of supporting leg assemblies, and the bottoms of the supporting leg assemblies are detachably provided with switching discs through separation assemblies. The first soft ground supporting assembly and the second soft ground supporting assembly are adopted to be used according to different soft ground conditions, short-term effective supporting of the tripod is achieved, rapid installation of the switching disc and positioning of the hard ground supporting assembly, the first soft ground supporting assembly and the second soft ground supporting assembly are achieved through the separation assembly, and therefore the switching disc can be conveniently and rapidly installed. And for different use environments, adjustment is carried out when the switching disc is installed, and the operation is simple and convenient.

The invention relates to the technical field of airport resource management, in particular to an airport ground support resource dynamic optimization method and system based on digital twinning, and the method comprises the steps: analyzing an airport business process knowledge graph, and fusing multi-modal data to construct a generative digital twinning model; performing multi-scene simulation deduction and multi-target optimization based on the generative digital twin model to generate a long-term planning scheme; during the execution period of the long-term planning scheme, monitoring the deviation between the actual operation data and the scheme predicted value, and performing dynamic adaptive adjustment on the long-term planning scheme; and combining a long-term planning scheme with real-time operation data to provide decision support, evaluating an optimization effect, and taking an evaluation result as feedback to iteratively optimize the generative digital twinborn model. According to the method, the generation type digital twinborn model is constructed, and a double-layer closed-loop optimization mechanism of long-term planning and short-term correction is established, so that the overall efficiency and punctuality rate of airport ground guarantee and the toughness of coping with emergencies can be effectively improved.

The invention relates to the technical field of photovoltaic supports, in particular to a flexible photovoltaic support. According to the technical scheme, the inclination adjusting assembly comprises a wind receiving plate, a torque spring, a circular plate, a blocking piece and a supporting plate, the supporting plate is fixedly installed at the top of a floor supporting frame, the side portion of the supporting plate is rotationally connected with the circular plate, and the torque spring is fixedly installed on the side, away from the supporting plate, of the circular plate; the other end of the torque spring is fixedly connected with the wind receiving plate, and a blocking piece is arranged at the position, located on the same side with the circular plate, of the side portion of the supporting plate. The wind receiving plate and the photovoltaic panel group are jointly acted by wind power, when the wind power is too large, the rotating force applied to the circular plate by the wind receiving plate through the torque spring is larger than the resistance of the clamping block, at the moment, the circular plate rotates, the inclination angle of the photovoltaic panel is adjusted, and the photovoltaic panel is prevented from being fractured due to the too large wind power.

The invention discloses a rapid connection testing device for a printed circuit assembly board, and aims to solve the problems of high cost, low connection density, large occupied space, tedious operation and the like in the existing testing technology. The device comprises a quick-connection probe module, a positioning tray and a pull pin, the quick-connection probe module comprises a quick-connection probe seat module, a protective cover module and a spring, positioning and locking are realized by multiplexing existing mounting holes of a to-be-tested PCB, electrical connection is realized by utilizing contact of a spring probe and a test point, a quick-connection positioning guide sleeve, a lock bead and a quick-connection ring are combined to form a quick locking / unlocking structure, and the quick-connection probe seat module and the protective cover module are connected with the pull pin. The conductive bushing and the grounding support ring form a grounding loop in cooperation with auxiliary positioning of the guide pin. A special test connector is omitted, so that the material cost is reduced; the connection density and the signal rate are improved, and the PCB space is saved; the operation efficiency is improved through the quick connection structure, and the device is suitable for efficient mass production testing.

The invention discloses bridge floor self-moving installation equipment and method for a prefabricated guardrail wall of a subway viaduct. The equipment comprises a base, a supporting displacement mechanism, a vertical supporting rod mechanism, an operation platform, a balance weight mechanism, a hoisting mechanism and a detection assembly. The supporting displacement mechanism comprises a wheel set and an oil cylinder supporting leg which are used for overall displacement and ground supporting respectively. The vertical supporting rod mechanism is fixedly arranged on the top of the base and used for supporting the operation platform. The counterweight machine is arranged on the base, so that the equipment is prevented from overturning; the hoisting mechanism comprises a moving trolley, a longitudinal driving assembly and a winch; the detection assembly detects related installation information; according to the installation equipment, an integrated installation system with a hoisting function is formed through the bridge floor self-moving base, the hoisting mechanism capable of being adjusted in a three-dimensional mode and the matched vertical supporting rod and counterweight system, dependence on large ground hoisting machinery is not needed, and the problems that in traditional hoisting operation, traffic limitation is serious, and efficiency is low are effectively solved; and meanwhile, precise positioning and mounting of the prefabricated guardrail wall are achieved.

Systems, devices, and methods for a ground support system for an unmanned aerial vehicle (UAV) including: at least one handling fixture, where each handling fixture is configured to support at least one wing panel of the UAV; and at least one dolly, where each dolly is configured to receive at least one landing pod of the UAV, and where each landing pod supports at least one wing panel of the UAV; where the at least one handling fixture and the at least one dolly are configured to move and rotate two or more wing panels to align the two or more wing panels with each other for assembly of the UAV; and where the at least one dolly further allows for transportation of the UAV over uneven terrain.

A method for determining a tractor longitudinal force threshold value for a tractor longitudinal retardation force that can be imparted on a tractor of a vehicle combination including the tractor and a trailer for retarding the vehicle combination, the tractor including a set of tractor wheels adapted to engage the ground supporting the tractor, each wheel of the set of set of tractor wheels including a tire,the method including:determining a tractor lateral force value,determining a tractor tire lateral force limit value using a tire model for determining a tire lateral force limit;determining a reference lateral force value using said tractor lateral force value and the tractor tire lateral force limit value;determining a horizontal friction force value, anddetermining the tractor longitudinal force threshold value.

The invention discloses a photovoltaic panel inclination angle adjustable supporting device used in a strong wind environment. The photovoltaic panel inclination angle adjustable supporting device comprises an inclined support, a ground fixing support, a lifting module, a rib plate, a rope pulling device and a control module. The ground fixing support is used for being fixed on the ground, and the inclined support is used for installing and fixing a photovoltaic panel. The inclined support is rotatably connected with the ground fixing support, and a second guide rail structure is arranged on the side edge of the inclined support; the wheel disc structure of the lifting module slides along the second guide rail structure and is used for adjusting the included angle between the inclined support and the ground fixing support. A mechanical redundancy protection mechanism is constructed through mechanical gravity self-locking, it is ensured that when electronic equipment fails, the safe state of the photovoltaic panel is still maintained, meanwhile, it is avoided that an execution mechanism needs to additionally input energy to maintain the inclined state of the photovoltaic panel, and the problem that the photovoltaic panel is damaged by wind in the strong wind environment can be solved with low cost and low energy consumption.

The utility model discloses a combined device supported by a unilateral formwork, which comprises a unilateral formwork system, a unilateral support system, an embedded part system and a support system, the unilateral support system is provided with an embedded part limiting support, and the embedded part system comprises a ground embedded rod, a connecting nut, an external connecting limiting rod, beam pressing section steel and a fixing part. The pressing beam profile steel is located on the upper side of the embedded part limiting support, and the top end of the externally-connected limiting rod penetrates through a reserved seam between the two pieces of pressing beam profile steel and is anchored through a fixing part connected to the surfaces of the pressing beam profile steel in a pressed mode. The support system comprises a ground support rod, a horizontal support rod and a support vertical buried rod, the front end of the ground support rod is supported at the far end of the right triangle frame, the rear end of the ground support rod is supported at the front side of the horizontal support rod, and the bottom of the support vertical buried rod is buried in the ground. A force transmission system is clear, structural loads are transmitted through the reliable force transmission system through reasonable connection and anchoring, the forming effect is good, repeated turnover use can be achieved, erecting and disassembling are convenient and fast, and labor cost is saved.

The invention provides an unmarked kinetic analysis method and system for real-time tracking and shooting of an unmanned aerial vehicle, and the method comprises the steps: carrying out the flight control of the unmanned aerial vehicle, and obtaining the dynamic image data, tracked and shot by the unmanned aerial vehicle, of a sporter running on a playground curve or a curve path; synchronizing and preprocessing the dynamic image data recorded by different cameras; extracting 2D key points of a human body from the preprocessed image, and reconstructing a three-dimensional motion track of the human body in a local coordinate system of the camera; carrying out posture compensation on the three-dimensional motion trail, ensuring the consistency of human body joint point trails under a ground world reference system, carrying out human body model scaling and muscle model scaling calculation, and carrying out inverse kinematics analysis; according to the inverse kinematics data, the centripetal acceleration of the sporter in the curve motion is calculated; and performing inverse dynamics calculation based on the centripetal acceleration, and calculating the ground support force. According to the invention, unmarked dynamic analysis of real-time tracking shooting of the unmanned aerial vehicle can be carried out.

The invention discloses a quadruped robot supporting leg counter-acting force planning control method, which belongs to the technical field of robot control, and comprises the following steps: firstly, acquiring current gait information of a quadruped robot, and identifying a current supporting leg; secondly, constructing a ground support polygon model; then setting stable support constraint conditions based on a ground support polygon model, and calculating a current expected state of the mass center of the robot; constructing a virtual model of the quadruped robot, and calculating the reactive force of the current supporting legs of the quadruped robot; and finally, the output torque of each motion joint of the quadruped robot is calculated to generate a robot planning control instruction. A stable supporting constraint condition is formed by recognizing supporting legs of the quadruped robot and establishing a ground supporting polygon model, and the current reactive force of the supporting legs is calculated based on the stable supporting constraint condition, so that a robot planning control instruction is generated, planning control over the reactive force is achieved, and the gait stability of the robot is improved.

The invention belongs to the technical field of aircraft ground support facilities, and particularly relates to a fluid-solid coupling mechanical analysis method for a large-span aircraft ground agile protection structure. According to the method, on the basis of an arbitrary Lagrange-Euler (ALE) algorithm, by integrating HyperMesh pretreatment and an LS-DYNA solver, high-precision simulation of fluid-structure interaction response of the plane ground agile protection structure under the action of a wind load is achieved. Comprising the following steps: establishing an aircraft ground agile protection structure finite element model and carrying out component division and grid division; constructing a semi-cylindrical air drainage basin and setting fluid material attributes and boundary conditions; and defining a fluid-solid coupling interface, and carrying out explicit dynamic calculation by adopting a bidirectional coupling algorithm. According to the method, the problems of low simulation precision and poor convergence of a flexible large-span structure in a traditional method are effectively solved, the stress, deformation and stability of the plane ground agile protection structure at different wind speeds can be accurately evaluated, and a reliable basis is provided for wind resistance design and safety evaluation.

The invention discloses an automatic unfolding foundation pit side wall supporting structure which comprises a foundation pit ground supporting plate and a foundation pit side face overturning supporting plate hinged to the foundation pit ground supporting plate, and a hydraulic cylinder overturning driving mechanism is arranged between the foundation pit ground supporting plate and the foundation pit side face overturning supporting plate. A parallel overturning lower supporting assembly and a parallel overturning side supporting assembly are arranged on the two sides of the foundation pit ground supporting plate and the two sides of the foundation pit side face overturning supporting plate correspondingly, when the foundation pit supporting structure is installed, an oil cylinder is started, the foundation pit supporting structure can be automatically unfolded by 90 degrees, and in the unfolding process, the two face expanding supporting plates in the foundation pit supporting structure are automatically unfolded; the expansion supporting plates are arranged in the four positions and are finally flush with the main body plate, the supporting area is increased, the expansion supporting plates in the four positions are automatically folded during storage, the transverse occupied space in the transferring process is reduced, carrying is easier, the expansion supporting plates are turned over in parallel in the unfolding process, three supporting inclined rods are arranged for supporting after unfolding, and stability is improved.

The utility model relates to motorcycle parts technical field provides a motorcycle big prop, motorcycle big prop includes big prop main part, reinforcing rib subassembly, treads, ground support foot, connecting plate, height limit support, damping assembly, connecting assembly and elastic support and limiting subassembly, big prop main part bottom both ends are fixedly connected with ground support foot, its lateral part is fixedly connected with tread, and connecting plate is fixedly installed on big prop main part top through connecting assembly, and height limit support is fixedly set up on connecting plate, and damping assembly is assembled in the rear end of height limit support, and one end of elastic support and limiting subassembly is connected with connecting plate, and the other end is connected with big prop main part. According to the big prop of the utility model embodiment, it can complete adapting spring breeze 700MT etc. original factory without big prop vehicle model without reforming the vehicle body.

The process and apparatus for tension stringing a conductor through above-ground supports uses a length of rope affixed to the conductor wound on the tensioning machine and pulled by the puller machine. Each of the first and second stringing apparatuses includes an onboard control system which controls each of the first and second stringing apparatuses in pulling mode or in tensioning mode. Each of the first and second stringing apparatuses includes a motor / regenerative brake or other means of inducing tension into the conductor. Each of the machines includes a wireless transceiver which is hardwired to said onboard control systems. A first operator resides on the puller machine and selects the machine as a puller machine operating in pulling mode using an onboard control system. An observer resides on the tensioner and selects the second machine to be the tensioner. Each of the wireless transceivers communicates with the other wireless transceiver enabling control of both the machines by the onboard control system of the puller machine.

The invention discloses a shuttle vehicle track structure with a hidden height adjusting mechanism and a construction method of the shuttle vehicle track structure, which can effectively reduce the height of a track and facilitate the installation of a power taking slide wire and a positioning bar code of a stacking machine. A screw head embedding groove (9) is formed in the lower bottom face of the I-shaped rail (8), a screw head of a height adjusting bolt (6) is movably arranged in the screw head embedding groove (9), a through hole (5) with an internal thread is formed in the portion, above a top end opening of the vertical embedded sleeve (2), of the ground supporting steel plate (4), and the portion, below the screw head, of the height adjusting bolt (6) is movably connected with an omega-shaped flange piece (10) in a sleeved mode. The tail end of a screw rod of the height adjusting bolt is screwed in the through hole with the internal thread, and a locking nut (7) is screwed on the height adjusting bolt below the bolt penetrating through the through hole (11) and on the height adjusting bolt between the wrench clamping hexagonal head (12) and the ground supporting steel plate (4); conditions are created for installation of the sliding contact line and the bar code positioning mechanism.

The invention discloses a flexible production line provided with a truss robot and capable of assembling on a tray, which is characterized in that a workshop comprises a main trolley walking area, a longitudinal track and a flexible assembling production line, the flexible assembling production line comprises an assembling unit, an assembling tray and the truss robot, workpieces comprise parts, and the assembling tray comprises a tray clamping jaw interface; the assembling unit comprises an operation station, the operation station comprises a ground support, the assembling unit comprises a robot assembling unit and / or a manual assembling unit, the robot assembling unit comprises an automatic operation station, the manual assembling unit comprises a manual operation station, and the automatic operation station and the manual operation station can grab parts to assemble workpieces; the truss robot comprises a clamping jaw, a cart, a main trolley and a lifting device; the clamping jaw comprises a tray clamping jaw; the truss robot runs in the main trolley walking area through the main trolley, and conveying of the assembly trays among the assembly units can be achieved. The method has the main advantage of high production efficiency.

The invention discloses an automatic dispatching planning method and system based on lowest cost and task balance, and relates to the technical field of airport ground guarantee scheduling, and the method comprises the steps: importing airport facility data, inter-facility distance data, employee data and task data; setting a scheduling target with preferential movement distance, preferential man-hour utilization rate or balanced movement distance and man-hour utilization rate; configuring work preparation time, task priority and employee priority rules; solving the pre-dispatching mathematical model through a branch pricing algorithm, and generating a task allocation scheme for minimizing the dispatching cost; task conflicts are detected based on the dynamic time window, conflicting tasks and subsequent tasks are redistributed, and a final dispatching result is output; the system comprises a data import module, a target setting module, a rule setting module, a pre-dispatching module and a tracking dispatching module.

The utility model relates to the technical field of directional drill auxiliary devices, in particular to an auxiliary support for a directional drill to penetrate through a geological fault, which is characterized in that a U-shaped frame is hinged to the upper end of a frame, a mounting plate is integrally arranged on the U-shaped frame, an angle adjusting device is arranged below the mounting plate, and the angle adjusting device is connected with the U-shaped frame. The lower end of the frame is fixedly connected with four groups of adjustable supporting leg devices which are arranged in a rectangular array; each adjustable supporting leg device comprises a supporting plate fixedly connected with the frame, the supporting plate is rotationally connected with an adjusting shaft, the adjusting shaft is integrally and coaxially provided with an adjusting screw rod, the adjusting screw rod is coaxially and correspondingly provided with a ground supporting rod, the ground supporting rod is coaxially provided with a threaded hole matched with the adjusting screw rod in a threaded mode, and the adjusting screw rod is provided with a threaded hole matched with the adjusting screw rod in a threaded mode. The upper edge of the ground supporting rod is fixedly connected with two connecting rods which are symmetrically arranged about the axis of the ground supporting rod, the end of each connecting rod is fixedly connected with a guide sleeve, and the lower end of the mounting plate is fixedly connected with two guide rods which correspond to the guide sleeves in a one-to-one mode and are vertically connected with the guide sleeves in a sliding mode.

Hydraulic system and vehicles and containers having such a hydraulic system. The hydraulic system has at least two supporting cylinders for extending ground supports, and at least two hydraulic pumps connected to a hydraulic main line, and at least one supporting cylinder is provided on each of the two hydraulic main lines. The hydraulic system also has a main valve via which the two hydraulic main lines can be connected to one another or disconnected from one another.

The utility model discloses a gauge rod based on geological exploration of a deep goaf of a mining area, which comprises a convenient supporting and adjusting assembly, the convenient supporting and adjusting assembly comprises a first clamping plate, a second clamping plate and an arc-shaped groove, the two sides of a gauge rod main body are movably connected with the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are movably connected with the arc-shaped groove. Arc-shaped grooves are formed in the side parts of the first clamping plate and the second clamping plate; the convenient supporting and adjusting assembly further comprises first rectangular blocks, bearing holes, second rectangular blocks, bearing rods, springs and round limiting blocks, the second rectangular blocks are fixedly connected to the two sides of the second clamping plate, the bearing rods movably penetrate through the bearing holes in a penetrating mode, and the outer sides of the bearing rods are movably connected with the springs in a sleeving mode. The ground supporting adjustment steps are simple and rapid, then the ground supporting process can be rapidly completed, the process can be completed by one hand, the gauge rod body can be held by the other hand, and the phenomenon that the gauge rod body topples over in the adjustment process is avoided.

The utility model discloses peripheral support internal control grinding equipment, and belongs to the technical field of medical instrument machining equipment. Comprising a grinding assembly sleeved with a support. The clamping assembly is arranged on the outer side of the support and used for clamping and fixing the support; the grinding assembly is connected with a driving assembly, and the driving assembly drives the grinding assembly to grind the inner wall of the support. The to-be-ground support is arranged on the grinding assembly in a sleeving mode, the to-be-ground support is fixed through the clamping assembly and makes contact with the to-be-ground support, and then the grinding assembly and the to-be-ground support move relatively under work of the driving assembly, so that grinding of the inner wall of the support is achieved; and the grinding degree can be adjusted by controlling the power of the driving assembly, so that the grinding process is controllable, accurate and efficient, and the qualification rate of grinding the peripheral support is greatly increased.

The utility model relates to the technical field of supporting devices, in particular to a high-bearing-capacity semitrailer supporting device. According to the technical scheme, the semi-trailer comprises a semi-trailer body, two fixing frames are arranged on the left side of the semi-trailer body, a first air cylinder push rod is arranged in each fixing frame, and the output end of each first air cylinder push rod penetrates and extends to the bottom face of the corresponding fixing frame and is provided with a first ground support. By arranging the fixing frame, the first air cylinder push rod, the first ground support, the reinforcing plate, the telescopic rod and the non-slip mat, auxiliary supporting can be conveniently conducted on the tail of the semitrailer body, and by arranging the motor, the worm, the rotating rod, the worm gear, the threaded rod, the threaded block, the second air cylinder push rod, the second ground support, the non-slip mat, the L-shaped support and the limiting rod, the supporting area can be increased according to needs; and the semitrailer body is prevented from inclining and tilting, so that the semitrailer body can be kept balanced and stable without a tractor, and the safety problems of inclination, collapse and the like are avoided.

The invention discloses a deep foundation bearing capacity detection system and method based on a vertical deviation rectification strategy. The detection system comprises a ground supporting table, a top jack and a force transmission column. According to the invention, the verticality adjusting unit is adopted to realize the vertical deviation correction of the bottom acting load direction, the load is ensured to apply pressure downwards in the vertical direction in the testing process, and meanwhile, the hole bottom leveling unit is integrated in the scheme, so that the technical problem that the surface of the hole bottom is uneven and the load plate applies pressure unevenly is effectively solved, and the test efficiency is improved. The load applying directivity and the contact surface uniformity are optimized, and the overall measurement precision is improved; in addition, four pressure sensors at the bottom of the load plate are intelligently linked with an axial force loading and automatic leveling device, so that intelligent and automatic leveling and deviation correction of the load and eccentricity are realized; through the two jacks at the upper part, pre-pressing of bottom sediment is realized, and the situation that the test fails due to the fact that the stroke of a bottom loading device is consumed by thick sediment is avoided.

The utility model provides an adjustable portable mining temporary support, and belongs to the technical field of supports. Comprising a screw rod and supporting rods in threaded connection with the two ends of the screw rod, a plurality of holding rods are fixed to the middle of the screw rod, a plurality of floor inserting plates are fixed to the ends of the two supporting rods, the supporting assembly comprises a fixing ring fixed to the outer wall of the supporting rod located on the lower portion, and a sliding ring is arranged below the fixing ring; and the sliding ring movably sleeves the outer wall of the supporting rod. Through the arrangement of the fixed ring, the sliding ring and the Z-shaped rod, in the using process, the Z-shaped rod and the floor inserting plate are in contact with the ground for supporting at the same time, the sliding ring is clamped on the surface of the floor inserting plate through the first positioning groove, a constructor can step on the Z-shaped rod to stabilize the supporting rod and prevent the supporting rod from inclining and rotating, the supporting rod does not need to be supported by multiple persons, and the operation process is simplified; the Z-shaped rods are synchronously supported on the ground, the bottom stress area of the supporting rods is enlarged, the supporting rods are prevented from sinking into the ground, and the supporting stability is enhanced.