523 results about "Earth anchor" patented technology

The invention discloses an open caisson construction deviation rectifying device and relates to the technical field of open caisson construction deviation rectifying, the deviation rectifying device is used for rectifying an inclined well wall, the deviation rectifying device comprises a supporting frame, a connecting module, a driving motor, a rope collecting module, a lifting module, a gripper, a mooring rope and a ground anchor, the supporting frame is fixed to the ground, and the top end of the supporting frame is fixedly connected with the connecting module; the connecting module is fixedly connected with the rope collecting module and slidably connected with the lifting module, the driving motor is fixedly connected with the connecting module and fixedly connected with the rope collecting module, the lifting module applies downward pressure to the highest point, the rope collecting module pulls a gripper to apply downward pulling force to the two ends of the highest point, and well wall deformation caused by stress concentration during deviation rectification is prevented. The ground anchor can change the direction of the mooring rope position adjusting force, pressure can be accurately applied, secondary deviation of the open caisson caused by too large pressure is prevented, force can be applied from multiple directions to enable the open caisson to be evenly stressed during deviation rectification, and the deviation rectification stability is improved.

The invention belongs to the technical field of photovoltaic supports, and particularly relates to a photovoltaic flexible support which comprises two edge supporting pieces, at least two assembly fixing cables, an assembly bearing cable, at least two wind-resistant frames and a ground anchor mechanism, and under the action of the wind-resistant frames, the assembly fixing cables and the assembly bearing cable can form a stable cable net structure. When a wind load acts on the cable net structure, force is transmitted to the wind-resistant frame through the assembly fixing cable, and then the wind-resistant frame distributes and transmits the force to the assembly bearing cable and the ground anchor mechanism, so that the wind resistance of the photovoltaic flexible support can be improved; therefore, the wind load is effectively dispersed and directly guided into the ground, the large-amplitude flutter and distortion of the cable net structure under the wind pressure are further inhibited, and the dynamic stability and the anti-fatigue performance of the whole photovoltaic flexible support are improved.

The invention discloses a physical and data hybrid driven suspension bridge dynamic response prediction method under main and aftershocks, and relates to the technical field of suspension bridge earthquake response prediction. Determining an acceleration time program sequence of main and aftershock vibration; aiming at the ground anchor type steel truss suspension bridge, considering the uncertainty of key parameters, and establishing a finite element model; collecting bridge output parameters, establishing a data set and dividing the data set into a training set and a verification set; carrying out normalization processing on the data; establishing a physical constraint equation, and solving a main beam midspan longitudinal displacement wave under physical constraint; constructing a machine learning model by using the training set based on ANN and LSTM; establishing a machine learning model loss function; verifying the machine learning model; and a machine learning model is utilized to predict main beam midspan longitudinal displacement waves. According to the method, the displacement time history considering the uncertainty of the key parameters and under the action of main and aftershock seismic actions can be calculated, and the adverse effect caused by the fact that the uncertainty of the key parameters and the aftershock stage cannot be considered in a traditional prediction method is made up.

The present invention relates to the technical field of underground coal mine excavation supporting devices, and in particular to a single-arm wheeled bolt and anchor cable drilling jumbo for a coal mine. The drilling jumbo comprises a wheeled chassis, a multi-degree-of-freedom working arm, and an airborne automatic drilling rig; the wheeled chassis carries the whole drilling jumbo; a main structure is divided into a front frame and a rear frame; one end of the multi-degree-of-freedom working arm is fixedly connected to the tail of the rear frame, and the other end of the multi-degree-of-freedom working arm is connected to the airborne automatic drilling rig and has a plurality of motion degrees of freedom relative to the rear frame; the plurality of motion degrees of freedom constitute two-stage fine tuning acting on the airborne automatic drilling rig; the first-stage fine tuning positioning is achieved by lifting / lowering, left and right swinging, extension and retraction, and rotation of the working arm; the second-stage fine tuning positioning is achieved by left and right swinging, forward and backward folding, and vertical lifting / lowering of a leveling swing mechanism; large-range adjustment of the airborne automatic drilling rig is achieved by means of cooperation of the plurality of motion degrees of freedom, and the requirements of full-section roof, side, and floor bolting are met; and the present invention replaces a traditional mode in which a hand-held pneumatic bolt drilling rig and an existing bolt and anchor cable drilling jumbo are manually operated to perform supplemental bolt and anchor cable installation.

The invention relates to the field of bridge engineering, in particular to a construction method of a tower-free cable crane ground anchor, which comprises the following steps of: installing temporary facilities; vertical pile locking openings and inclined pile guide wall construction; vertical piles and concrete carrying pole beams are constructed; constructing a bearing platform, an inclined pile and a rope tying beam; and anchor cable construction. When no large hoisting equipment exists, only small temporary facilities are adopted to be matched with manual work; a site is leveled on gentle slope covering soil, a vertical pile locking opening and an inclined pile guide wall are poured, excavation of vertical piles and inclined piles is completed, pouring loads of a rope tying beam and a bearing platform are directly transmitted to the vertical piles through a concrete carrying pole beam, foundation settlement is avoided when concrete of the rope tying beam and the bearing platform is poured, and the structural precision is improved; the rope tying beam is positioned through the bracket, and manual transportation and installation are facilitated in the mode that the outer wrapping steel pipe of the rope tying beam is disassembled and then welded; the method is simple in step, convenient to operate and good in effect.

The utility model discloses a flexible photovoltaic system and an arch-shaped wind-resistant support thereof. The arch-shaped wind-resistant support comprises an arch-shaped rod, a straight rod and a connecting rod. The two ends of the arch-shaped rod are connected with the two ends of the straight rod one by one, the middle part of the arch-shaped rod is used for being connected with a bearing cable of a photovoltaic module of the flexible photovoltaic system, and the middle part of the straight rod is used for being connected with a wind-resistant cable of a ground anchor of the flexible photovoltaic system; and the connecting rod is connected between the middle part of the arched rod and the middle part of the straight rod. The arch-shaped wind-resistant support is composed of the arch-shaped rod, the straight rod and the connecting rod, has the advantages of being simple and convenient in structure, low in machining and manufacturing cost, good in economical efficiency and the like, and the formed arch-shaped wind-resistant support can be located in the same plane, so that the arch-shaped wind-resistant support can have good wind-resistant performance. Therefore, the wind resistance of the flexible photovoltaic system can be improved.

The utility model provides a photovoltaic support ground anchor, which relates to the technical field of photovoltaic support installation, and comprises a base and a hinged support I. The bottom end face of the base is provided with a sleeve seat, the top of the base is provided with a plurality of through holes, the base is provided with the hinged support I through threads of the through holes, the sleeve seat is internally provided with a lining assembly, and the lining assembly is provided with a plurality of through holes. The lining assembly comprises a rotating block, a threaded rod is installed on the bottom end face of the rotating block, and the other end of the threaded rod and the bottom of the sleeve base are assembled and installed. The photovoltaic support ground anchor is novel in overall design and simple in structure, the overall road holding force can be improved through the design of the lining assembly, and meanwhile through the design of multiple sets of through holes, the overall road holding force can be improved. And multi-angle installation can be achieved, and convenience is greatly improved.

The invention discloses a ground anchor calculation auxiliary measuring and calculating system for electric power construction, and relates to the technical field of ground anchor construction, and the ground anchor calculation auxiliary measuring and calculating system for electric power construction comprises a data input module which is used for inputting ground anchor information and receiving electric power construction ground anchor related parameters input by a user. The microprocessor evaluates the safety condition in combination with ground anchor data, the sensor calibration module calibrates a sensor to provide accurate original data for the real-time monitoring data fusion module, the module integrates the data and then provides the data for the microprocessor for safety evaluation, and the data quality evaluation module evaluates a microprocessor instruction to provide a basis for the abnormity and early warning module. The module receives related data, data abnormity with small deviation is corrected by using a moving average algorithm and a smooth and linear interpolation method, the modules and the algorithms are matched to realize accurate safety assessment, effective early warning and risk prediction functions, and popularization is facilitated.

The invention discloses a construction method of a single-tower single-span ground anchor type rotary cable suspension bridge steel truss girder, which comprises the following steps: S1, mounting a suspension bridge main tower and a temporary tower on two sides, and then mounting a rotary cable with a cable crane; s2, after assembling of the steel truss girders is completed, the steel truss girders are transported section by section in a tire-free mode through a full-rotation module vehicle and rotated in place; s3, hoisting and erecting the whole section of steel truss girder to a preset position through a cable crane, and connecting the whole section of steel truss girder with the adjacent steel truss girder through a temporary hinge device; s4, after the integral hoisting of the steel truss girder is completed, rigid-hinge conversion is carried out, and the temporary hinge device is cut off; and S5, the horizontal distance, the height difference and the relative rotating angle of a closure opening of the steel truss girder are adjusted at the root of the bridge tower, butt welding seams are synchronously welded, and steel truss girder whole-section main span closure is completed. According to the method, the situation that a cable crane anchorage is arranged on a mountain is avoided, the cable crane span is reduced, meanwhile, damage of a temporary anchor body to the mountain is avoided, the measure force of rigid-hinge conversion can be reduced, use of large equipment is avoided, and the construction difficulty is reduced.

The invention discloses a multi-model combined ground anchor arrangement method and device, electronic equipment and a storage medium. The method comprises the following steps: loading an existing camera ground anchor point location resource map, coordinate data of each stop line and a proportional scale; loading a ground anchor arrangement diagram of the corresponding model based on the model information of the ground anchor to be combined; performing superposition processing on each ground anchor arrangement diagram and the existing camera ground anchor point location resource diagram to obtain a combined ground anchor arrangement diagram; carrying out image processing on the combined ground anchor arrangement diagram to extract a ground anchor demand area and an existing machine position ground anchor point position; and a clustering algorithm is adopted to determine and output the minimum ground anchor arrangement number and the corresponding point positions meeting the mooring requirements of all the aircraft types. According to the method, the existing aircraft position ground anchor point location resource map and the ground anchor arrangement maps of different aircraft types are loaded, and superposition processing and optimization are carried out, so that the mooring compatibility of multiple aircraft types is realized, and meanwhile, the dual targets of facility reduction and pavement operation intensification are achieved through topology recombination and efficiency improvement of the existing anchor point resources.

The invention relates to a shaped SPCS cavity wall assembly type combined system and a construction method thereof. The shaped SPCS cavity wall assembly type combined system comprises an SPCS cavity wall, assembly type ring ribs, a height-adjustable base, a laminated plate, a supporting angle adjusting piece and an adjustable supporting rod. An SPCS cavity wall and a ground anchor are arranged on the laminated slab; fabricated ring ribs are arranged in the SPCS cavity wall, and supporting angle adjusting pieces are arranged on the upper side face and the lower side face of the SPCS cavity wall correspondingly. The group of adjustable supporting rods are respectively connected with the ground anchor piece and the supporting angle adjusting piece; the SPCS cavity wall and the laminated slab are connected through a height-adjustable base, and the side face is sealed through a sealing plate. And a group of lifting lugs are arranged at the upper end of the SPCS cavity wall. According to the method, BIM modeling is adopted to extract data, intelligent machine tool machining is adopted, an SPCS cavity wall assembly type combined system is formed, the construction procedures are greatly reduced, size control is accurate, the reinforcing mode is reliable, and the forming effect is good; the method not only has a good construction error-tolerant rate, but also guarantees the safety of construction workers, and improves the efficiency of building construction.

The utility model relates to a high-wind-resistance and high-stability single-layer cable support capable of adapting to complex terrains, and belongs to the technical field of flexible photovoltaic supports. The structure is composed of an end truss structure, a middle truss structure, a flexible inhaul cable, a wind-resistant connecting piece, a ground anchor and the like. The support structure comprises a door-shaped frame end truss support and a double-triangle middle truss support and is used for fixing the flexible inhaul cable. The middle truss structure is composed of the double triangular supports and can well adapt to fluctuating mountain terrains, uneven horizontal force on the two sides is balanced, and the safety of the middle truss structure is guaranteed when prestress is tensioned. Compared with an existing structure, the high-wind-resistance and high-stability single-layer cable support capable of adapting to the complex terrains has better wind resistance and stability, can adapt to the complex terrains such as mountainous regions and the like, provides safety guarantee for a whole flexible support system, reduces the risk of subfissure of assemblies, and is suitable for popularization and application. Meanwhile, the device has the advantages of quick installation, few parts, simple construction operation and the like.

The invention relates to a stay wire tower foundation load force analysis method and device, computer equipment and a medium. The method comprises the steps that the quality of a stay wire tower, stay wire specification data contained in the stay wire tower, wind load dynamic change data in the portal frame lifting process and an actual geotechnical engineering investigation report corresponding to the stay wire tower are obtained; the static load of the guyed tower is calculated according to the mass of the guyed tower and the guyed specification data contained in the guyed tower; calculating the dynamic load of the guyed tower according to the mass of the guyed tower and the dynamic change data of the wind load; according to an actual geotechnical engineering investigation report, the ground anchor resistance of the guyed tower is calculated; and obtaining a basic load force analysis result of the guyed tower based on the static load, the dynamic load and the ground anchor resistance. In the whole process, by comprehensively considering multi-dimensional data such as the quality of the guyed tower, the specification of the guyed wire, the dynamic change of the wind load and an actual geotechnical engineering investigation report, the whole scheme can comprehensively and accurately analyze the basic load force of the guyed tower under different working conditions.

Screw-type ground anchors that include a shaft extending along a longitudinal axis and having a screw section configured to drive the shaft along the longitudinal axis into the ground when rotated about the longitudinal axis. A drive head is disposed at an upper end of the shaft and is axially aligned with the longitudinal axis. The drive head is configured to receive a rotational drive for rotating the shaft, and has at least one bore therethrough that is transverse to the longitudinal axis. The bore(s) receives an upper end of the shaft and / or a pivot pin that rotatably couples a lay-flat shackle to the drive head. The lay-flat shackle is operable to pivot between an upright position extending generally along the longitudinal axis to a lay-flat position extending generally transverse to the longitudinal axis.

The invention provides a factory management method and device for a garbage transport vehicle and electronic equipment, and relates to the field of data processing. The method comprises the following steps: acquiring license plate data and vehicle attribute data of a garbage transport vehicle; according to the license plate data and the vehicle attribute data, weighing the garbage transport vehicle to obtain the weight of the vehicle; if it is determined that the vehicle weight meets the preset load condition, unloading queuing data are obtained; based on the vehicle attribute data and the unloading queuing data, determining a target unloading area corresponding to the garbage transport vehicle; acquiring a vehicle parking position of the garbage transport vehicle sent by a ground anchor sensor of the target unloading area; according to the vehicle parking position, a ground anchor sensor and loading and unloading equipment are controlled to cooperatively complete unloading; and if it is determined that the garbage transport vehicle completes unloading, the garbage transport vehicle is controlled to leave the factory according to the AR route. By implementing the technical scheme provided by the invention, the plant management efficiency can be improved.

The invention discloses a construction method for erecting a whole-section steel truss girder of a large-span rotary cable ground anchor type suspension bridge, and belongs to the technical field of bridge construction.A tower of a cable crane is arranged on one side of a north anchor, a temporary cable saddle of the cable crane is arranged on an upper cross beam of a main tower, the cable crane is installed through an existing catwalk, and the whole-section steel truss girder of the large-span rotary cable ground anchor type suspension bridge is erected. The span combination of the cable cranes is 49m + 516m + 177.9 m, the designed hoisting weight is 145T, each cable crane is provided with two load-carrying trolleys, two 25t friction type traction winches, four 15t single-barrel hoisting winches and two 25t winches, the temporary tower is arranged on the north anchor, the height of the temporary tower is 32.27 m, the temporary tower is welded with the base of the north anchor, and the temporary tower is connected with the base of the north anchor. A tower column of the main tower is composed of stand columns, a transverse connecting system and an inclined connecting system, the stand columns are steel pipes of phi 630 * 20 mm, and the stand columns are connected through bolts. In this way, the stability of the rotary cable and the accuracy of the line shape of the steel truss girder in the construction process of the whole section of the steel truss girder can be guaranteed.

A drilling device for a mobile ground anchor comprises: a power source, a hydraulic control device, a power head connecting arm and a power head connected in sequence; the power head is connected to the ground anchor; the hydraulic control device is used to: drive the power head to output torque based on the energy provided by the power source to drill the ground anchor into the ground; the present invention can be widely used in the process of rigid rod ground anchor burying facilities, directly improving the safety and reliability of construction operations. It realizes hydraulically driven drilling of ground anchors, avoids manual screwing, and facilitates and quickly carries out transportation and transfer at the construction site, solving the construction difficulties of ground anchors in current wiring construction.

The invention relates to the technical field of anchoring devices, and discloses an anchoring device for building an emergency refuge tent and the emergency refuge tent, the anchoring device comprises a ground anchor, a connecting groove is formed in the top of the ground anchor, a connecting column is slidably connected in the connecting groove, a fixing rod is fixedly connected to the top end of the connecting column, and a pressure bearing seat is connected to the top of the fixing rod; a sliding groove is formed in the top of the inner wall of the connecting groove, a limiting block is slidably connected into the sliding groove, one side of the limiting block is attached to the outer wall of the connecting column, a rotating groove is formed in the side, away from the connecting column, of the limiting block, a clamping disc is rotatably connected into the rotating groove, a threaded rod is fixedly connected to one side of the clamping disc, and a threaded groove corresponding to the threaded rod in position is formed in the outer wall of the ground anchor. According to the anchoring device for building the emergency refuge tent and the emergency refuge tent, by means of mutual cooperation of the connecting columns and the limiting blocks, a user can flexibly adjust the height of the anchoring device, the requirements of different terrains are met, it is ensured that the multiple anchoring devices evenly bear pressure, and then the overall stability of the tent is improved.

This invention relates to the field of oilfield thermal recovery well technology, and discloses a well completion process device, a column-type ground anchor, and a method for increasing the prestress of the oil layer casing. The well completion process device includes a surface casing (1) located below the surface, an oil layer casing (2), and a casing head body (3). The oil layer casing is connected to the inner surface of the casing head body via a connecting assembly (40). A column-type ground anchor (500) is connected to the bottom of the oil layer casing. The column-type ground anchor includes an anchor claw (502) and a plunger body (530). A liquid outlet (501) is formed on the column-type ground anchor. The anchor claw can extend out of the side wall of the plunger body and insert into the formation. Cement can be discharged from the liquid outlet to seal the annular gap between the oil layer casing and the formation. This invention uses hydraulic oil to insert the anchor claw into the formation, pulling the oil layer casing to a preset load. After the oil layer casing is pulled up, it is clamped to the inner wall of the casing head body via the connecting assembly, thus increasing the prestress.

The invention discloses a device and method for detecting the impact resistance of a cable, and relates to the technical field of cable tests.The device comprises a ground anchor and a frame body, the ground anchor and the frame body are both fixedly installed on the ground, the ground anchor is provided with a cable, the cable has elasticity, and the device further comprises a carrying frame, the carrying frame fixedly penetrates through the top of the frame body, a rectangular groove is formed in the bottom of the carrying frame, and the rectangular groove is used for providing space; the rotating roller rotationally penetrates through the inner wall of the carrying frame; the pulling rope is arranged on the circumferential surface of the rotating roller, and the pulling rope is used for pulling the cable to move; through the free falling body motion of the counterweight plate, the instantaneous impact load can be simulated, the dynamic response of the cable under the sudden pulling force can be reflected more truly, the wear of the pulling rope can be reduced under the cooperation of the rotating roller and the guide roller, and the data accuracy can be ensured.

The invention provides a large and medium-sized horizontal hydro-generator stator overturning and hoisting device and method, and the device comprises at least two overturning supports which are fixed on the ground and are respectively hinged to the lower side of the right end of a stator; the at least two turning-over ground anchors are fixed on the ground, and the distance between the turning-over ground anchors and the right end face of the stator is larger than the diameter of the stator; the first connecting point is positioned on the upper side of the right end of the stator and is correspondingly matched with the turnover ground anchor; the first tension device is connected with the first connecting point and the corresponding turnover ground anchor so as to be used for pulling the stator to rotate along the turnover support; the second connecting point is located at the upper end of the stator, and the second tension device is connected with the second connecting point and the external hoisting device so that the external hoisting device and the stator can be in the stress state all the time. The stator overturning device has the advantages of being stable and safe in overturning process, high in overturning efficiency and not prone to damage stator components.

The utility model belongs to the technical field of electric power construction, particularly relates to a portable ground anchor for an electric power temporary stay wire, and aims to solve the problems that a large amount of manpower needs to be input in pit digging arrangement and recovery of an existing traditional ship-shaped ground anchor, a large number of crops on the ground surface are damaged, and the occupied area is large. A pointed cone used for being inserted into the ground is fixed to the bottom end of the anchor rod. Wherein a positioning assembly is further arranged on the surface of the anchor rod, and the positioning assembly is used for stably fixing the anchor rod in the ground; the connecting part is arranged on the upper side of the anchor rod, the connecting part comprises a second connecting flange, a connecting block is fixed to the top end of the second connecting flange, a reserved connecting hole used for constructing a stay wire is formed in the connecting block, and an inclined fixing block is further fixed to the top end of the second connecting flange; the working hours are greatly saved, the efficiency is improved, the damage to the land is reduced, the occupied area is small, and the use is convenient.

The invention discloses a PCF plate single-side formwork erecting construction process which comprises the specific process steps that a PCF plate is manufactured, a mold assembly is customized according to the set size of the PCF plate, bare concrete is poured into the mold assembly, and then the needed PCF plate is formed. And pre-burying and laying: laying ground anchor systems on the ground in sequence. The method comprises the steps of floor pouring, PCF plate hoisting, supporting frame body mounting and fixing, back ridge supporting and reinforcing, triangular frame primary pressing, triangular frame straightening, triangular frame secondary pressing, wall concrete pouring and frame body dismantling. The poured wall body is divided into the PCF plate formed through a mold in the early stage and the inner side wall body formed through pouring in the later stage. And meanwhile, the flat plate sleeve seat used for being connected with the tripod is pre-buried on the PCF plate, so that a single-side formwork supporting process is realized, and the phenomena that a through-wall screw rod needs to be fixed with an outer guide wall in a foundation pit due to the fact that the tripod needs to be mounted and fixed, a through hole is finally formed after a wall body is formed, and local outer wall water seepage is caused are avoided.

The invention relates to a safety hook device. The safety hook device comprises a ground anchor assembly, a traction assembly and a connecting assembly. The ground anchor assembly comprises a restraining piece and anchoring structures arranged at the two ends, in the first direction, of the restraining piece correspondingly, and the anchoring structures are fixed to the ground. One end of the traction assembly is slidably connected with the restraining piece in the first direction. The connecting assembly is detachably connected with the other end of the traction assembly, the connecting assembly is used for being fixed to the front end of a vehicle, and the first direction is the extending direction of the restraining piece. When the vehicle unloads, the front end of the vehicle is connected with the ground anchor assembly through the traction assembly, overturning moment generated by sudden unloading during unloading can be effectively counteracted, and the front end of the vehicle is restrained on the ground through the anchoring effect of the ground anchor assembly, so that the high edge overturning risk caused by gravity center shift of the vehicle is avoided, and safety guarantee is provided for unloading operation.

This utility model discloses a single-sided formwork reinforcement structure for ultra-high shafts, including a shaft, a cast-in-place pile at the bottom of the shaft, ground anchors on the outer side of the cast-in-place piles, masonry on the inner wall of the shaft, a ring beam on the masonry from bottom to top, wall anchor bars penetrating the surface of the masonry, and a water-stop bolt connected to the end of the wall anchor bar away from the inner wall of the shaft. One end of the water-stop bolt is longitudinally connected in series or extends to the wall anchor bar on the opposite side of the masonry. This utility model, through a composite anchoring system, improves the support of the single-sided formwork through the interaction of multiple anchoring system layers; simultaneously, combined with the ground anchor structure, it effectively distributes the lateral pressure evenly to the ground anchor bars, increasing the overall pull-out resistance by more than 40% compared to traditional ground anchors, and eliminating the need for through-wall bolts, thus avoiding future water seepage problems.

The utility model discloses a trapezoid combined type crossing frame which comprises a plurality of trapezoid crossing frame units, the bottoms of the trapezoid crossing frame units are installed on a supporting base through 90-degree rotating hinges, and the supporting base is inserted into the ground through an expansion ground anchor to be fixed. The adjacent trapezoidal crossing frame units are connected through the cross beam modules; wherein the trapezoidal spanning frame unit at the outer end of one side is connected with a traction module for converting the spanning frame from a folded state to a vertical state; according to the utility model, the traction module is arranged to be matched with the trapezoidal spanning units hinged to the supporting base, so that the overhead working amount is reduced, the spanning frame can be pre-assembled on the ground, the assembling efficiency is improved, the construction period is effectively shortened, and the trapezoidal spanning frame units are in a folded state; a steel wire rope in the traction module pulls the crossing frame in the folded state to be in the vertical state, and the wires can be effectively protected.

The loess shear strength in-situ testing device comprises two underframe rods which are equal in height and are arranged in parallel at an interval, a mounting frame is arranged at the tops of the two underframe rods, a probe rod is longitudinally mounted on the mounting frame, the probe rod is driven by a driving mechanism to move up and down, ground anchors are arranged on the two sides of the bottom of each underframe rod, and the lower portion of the probe rod is connected with a force measuring steel bar meter. The output end of the force-measuring reinforcement meter is electrically connected with the input end of the shear strength data acquisition instrument, and the lower end of the force-measuring reinforcement meter is connected with an isosceles right triangle-shaped pressure-bearing plate with a flat plate surface. According to the utility model, the bearing plate at the bottom of the feeler lever abuts against a specified detection position of a to-be-detected area and applies a vertical force downwards, the force measuring reinforcement meter transmits stress change to the shear strength data acquisition instrument, and the shear strength data acquisition instrument automatically obtains shear strength parameters of the specified detection position; the test principle is basically the same as that of a direct shear test, and related principles can be directly utilized; the disturbance to the soil body is smaller than that of an indoor test, and the result is more reliable.

The invention discloses a main beam support-free closure device of a ground anchor type suspension bridge and a closure process, and relates to the technical field of bridge closure, the main beam support-free closure device comprises a bearing platform and a cable bent tower arranged on the bearing platform, the cable bent tower is provided with a lower cross beam, the lower cross beam is provided with an approach bridge, the cable bent tower is provided with a main cable, the main cable is provided with a cable loading crane, and the cable loading crane is connected with the bridge. The cable crane is provided with a hoisting steel strand, the hoisting steel strand is provided with a hoisting sling, the cable bent tower is provided with a swing shifting system for shifting the first beam section, and the cable bent tower is provided with a suspension system for suspending the first beam section. The installation work of the first beam section and the second beam section on the suspension bridge and the closure work of the main beam of the suspension bridge are achieved through the swing shifting system and the suspension system which are arranged on the cable bent tower, a huge support system does not need to be laid, and therefore the construction efficiency of the suspension bridge is improved, the safety risk is reduced, and the cost is lower; the process has wide applicability to closure of the main span beam section of the river-crossing and sea-crossing ground anchor type suspension bridge.

The utility model relates to the technical field of white birch liquid production and processing, in particular to a special low-temperature concentration device and system for white birch liquid, which is characterized in that a supporting disc is arranged at the upper end of a supporting column, a base is arranged at the bottom of the supporting column, a concave cavity is formed in the surface of the base, a square plate is embedded in the concave cavity, and the square plate is arranged on one side of a supporting plate; an extension plate is arranged on the other side of the supporting plate, grooves are formed in the two sides of the extension plate, a first rotating cylinder is rotationally arranged on the connecting block, a vertical rod is fixed to the first rotating cylinder, a fixing piece is fixed to the vertical rod, the vertical rod is sleeved with a spring, a protruding block is fixed to the end face of the vertical rod, a second rotating cylinder is rotationally arranged on the ground anchor body, and a vertical plate is fixed to the second rotating cylinder; annular columns are fixed on the end surfaces of the vertical plates; the special low-temperature concentration device and the special low-temperature concentration system for the white birch liquid have the beneficial effects that vibration generated by equipment can be effectively buffered and absorbed, the stability of the equipment is improved, and the service life of the equipment is prolonged.