318 results about "Stress point" patented technology

The invention provides an elastic-plastic unified description method and system for nonlinear characteristics of surrounding rock considering medium-principal stress, and belongs to the technical field of computer aided design. The method comprises the following steps: carrying out a true triaxial mechanical property test on surrounding rock to obtain a surrounding rock total stress-strain curve, extracting characteristic stress points of the stress-strain curve, and carrying out stage division on the stress-strain curve; constructing a characteristic yield surface in the stress space based on the characteristic stress points; based on the staged characteristics of the stress-strain curve, plastic deformation capacity characterization functions of different stages are constructed respectively, and the plastic deformation capacity characterization functions are used for describing the plastic deformation capacity of the stress-strain curve; and constructing a nonlinear hardening-softening equation to describe evolution characteristics of the characteristic yield surface. According to the scheme, the nonlinear characteristics of the stress-strain curve can be more comprehensively and accurately described under different minimum principal stresses and medium principal stresses.

The invention belongs to the field of machining, and particularly relates to a precise centering clamp for an annular thin-wall part. A precise centering clamp for an annular thin-wall part is reasonable in structure, has the self-adaptive adjusting capacity and can achieve precise centering. The precise centering clamp comprises a clamp base and the like. A bottom supporting piece is arranged at the top of the clamp base and can support and place workpieces with different diameters, a circle of rails are arranged on the top of the clamp base in the radial direction of the clamp base, adapters are arranged on the rails in a sliding mode and are in an L shape, clamping jaw bodies are connected to the inner side faces of the adapters, and the clamping jaw bodies can be detached. According to the clamping jaw, the clamping jaw body is divided into two parts through the arc-shaped groove, the clamping jaw body has an open space, so that the two faces of the clamping jaw body can make contact with the outer side wall of the annular thin-wall part, the stress points of the clamping jaw body and the annular thin-wall part are increased, the annular thin-wall part is better fixed, and the clamping jaw body can be prevented from being damaged due to stress.

The utility model belongs to the field of pipeline construction auxiliary devices, particularly relates to a side slope protection device, and aims to solve the problems that when an existing device is used, the angle can be adjusted to be attached to a side slope for protection, but when the existing device is fixed, main stress points of the existing device are a plurality of conical rods below a bottom plate of the existing device, and when soil is loose, the existing device cannot be attached to the side slope. In order to solve the problem that the safety of the device is reduced due to the fact that the device can be directly and integrally overturned, the utility model provides the following scheme that the device comprises a bottom plate, and a plurality of fixed anchor rods are fixedly connected to the bottom of the bottom plate. When the slope protection device is used, the slope protection device effectively protects and reinforces a slope through the synergistic effect of the reinforcing mechanism and the collapse prevention mechanism, the stability of the whole device can be enhanced through the reinforcing mechanism, and the slope protection device can resist the influence of slope soil loosening or external force. And the anti-collapse mechanism can actively prevent the slope soil from sliding down, so that the occurrence of slope collapse accidents is avoided.

The invention provides an intelligent robot feeding method and system, and relates to the technical field of humanoid robots, and the method comprises the steps: obtaining a test rubber product image; determining a plurality of initial stress points of the tested rubber product by using an initial stress point model based on the tested rubber product image; determining three-finger stress points based on the plurality of initial stress points of the tested rubber product; generating a plurality of sets of grabbing schemes based on a plurality of initial stress points and three-finger stress points of the tested rubber product, wherein each set of grabbing scheme comprises five-finger stress points; acquiring a captured video of each set of capturing scheme; target grabbing points of the remaining two fingers are determined based on the grabbing video of each set of grabbing scheme; and based on the force bearing points of the three fingers and the target grabbing points of the remaining two fingers, the five-finger robot is controlled to conduct feeding grabbing on the remaining rubber products. According to the method, the adaptive grabbing points of the rubber products can be efficiently and accurately determined, and stable feeding grabbing of the robot is achieved.

The invention relates to the technical field of container welding, in particular to an intelligent overturning and welding integrated production line for the front end and the rear end of a container. Comprising a roll-over stand, a welding gun and a mechanical arm, two supporting columns are installed at the upper end of the overturning frame. Rotating plates are rotationally mounted on the surfaces, close to each other, of the two supporting columns; through cooperation of the support and the supporting plate, the supporting plate can clamp the front-end frame or the rear-end frame, so that in the process that the driving motor drives the rotating plate to rotate, the rotating plate can drive the front-end frame or the rear-end frame clamped by the supporting plate to rotate, and workers do not need to use assistive devices such as ropes and iron chains to assist in rotating or overturning of workpieces; in addition, the clamping area of the supporting plate on the front-end frame or the rear-end frame is large, so that stress points between the supporting plate and the front-end frame or the rear-end frame are evenly distributed, the deformation problem of the front-end frame or the rear-end frame is avoided, and the overturning stability of the front-end frame or the rear-end frame is improved.

The invention discloses a tensile property detection device and method for cable processing, and relates to the technical field of performance detection.The tensile property detection device comprises a tensile testing machine, two mounting seats which are distributed up and down are fixedly mounted on the tensile testing machine, wire winding frames are mounted in the mounting seats, and each wire winding frame comprises a fixed mounting seat, a winding rod and a clamping mounting seat; the fixed mounting seat is located on one side of the clamping mounting seat, the rolling rod is fixedly connected between the fixed mounting seat and the rolling rod, a fixing mechanism is mounted in the fixed mounting seat, and a clamping mechanism is mounted in the clamping mounting seat; the cable is wound on the winding rod on the winding frame by two or more layers, mutual friction limitation is achieved through the contact faces between the outer surfaces of the cable winding parts for fixing, the cable is clamped and fixed through a larger stress face, the problem that the cable is broken at the stress point position of the clamping and fixing position is solved, and the cable winding efficiency is improved. And the final tensile property detection data of the cable is more accurate.

The utility model discloses a pneumatic chuck for a glass cloth sending mechanism, which comprises a clamping jaw assembly, the clamping jaw assembly comprises a fixed seat and a plurality of clamping jaws, each clamping jaw comprises a mounting block and a first clamping jaw which are arranged at an included angle, and the connecting position of the first clamping jaw and the mounting block is of an arc-shaped structure, so that the stress area of a stress point is enlarged, the stress is improved, and the service life of the clamping jaw is prolonged. Therefore, the strength of the clamping jaw is enhanced, the situation of jaw breakage is avoided, the number and frequency of replacing the clamping jaw are reduced, and the production efficiency is improved.

The utility model discloses a safety protection shed cover with a rain cover, and particularly relates to the technical field of safety shed covers, the safety protection shed cover comprises a reinforcing transverse plate, a supporting assembly is arranged on the reinforcing transverse plate, and the supporting assembly comprises two reinforcing connecting pieces arranged at the ends of the reinforcing transverse plate respectively. And a plurality of elastic supporting plates for supporting are arranged on the two reinforcing connecting pieces. By arranging the supporting assembly, when the reinforcing connecting piece and the elastic supporting plates are pressed by external force, the elastic supporting plates disperse stress points and transmit the stress points to the reinforcing connecting piece, deformation and damage caused by large load when a certain position is stressed are avoided, and when the device is used, the number of the elastic supporting plates can be increased or decreased according to needs, so that the device is convenient to use. The elastic supporting plate is clamped on the reinforcing connecting piece through the corresponding first clamping groove in the bottom of the elastic supporting plate and the second clamping groove in the reinforcing connecting piece, and the elastic supporting plate can be conveniently and rapidly disassembled and assembled.

The utility model discloses a profile structure for erecting an outdoor awning, which comprises a connecting piece provided with at least one hook part; the fixed beam is provided with a slot matched with the hook part; the connecting piece is provided with at least two supporting plates; the hook part of the connecting piece is matched with the slot of the fixed beam, and the at least two supporting plates are combined, so that the stability of the whole structure is obviously improved. Due to the clamping design of the hook part and the slot, stress is uniformly distributed, and the defect that a single stress point of a traditional screw is easy to loosen is overcome; the double supporting plates are arranged to form double supporting, the bearing pressure is further dispersed, deformation or cracking of the aluminum material caused by single-point stress is effectively prevented, the bearing capacity of the support is greatly improved, and the service life of the support is greatly prolonged.

The utility model relates to the technical field of winding machines, and discloses a winding machine structure capable of adjusting winding length and preventing wire breakage, which comprises a frame, an equipment table is fixedly mounted on one side of the frame, a fixing frame is fixedly mounted on one side of the front end of the frame, a branching roller is rotatably connected in the fixing frame, and an adjusting mechanism is arranged in the frame; the adjusting mechanism comprises a servo motor, the servo motor is embedded in one end of the fixing frame, and a threaded rod is fixedly installed at the power output end of the servo motor. Through the design of the servo motor, the threaded rod, the sliding frame, the limiting frame, the limiting groove and the abutting wheel, the wire winding length is adjusted to be increased, stress concentration during wire winding is reduced, and the wire winding quality is improved. And meanwhile, the contact wheel is matched to increase stress points, the stress is further dispersed, the smoothness of the conveying process is kept, and therefore the protection performance of the silk threads can be further improved.

The invention relates to the technical field of rubber suspensions, in particular to a rubber suspension system with an embedded damper, which comprises an upper mounting seat and a lower mounting seat, a damping main spring and an auxiliary spring are arranged between the upper mounting seat and the lower mounting seat, a lower support group is arranged in the middle of the lower mounting seat, and upper support groups are arranged at the lower ends of the two sides of the upper mounting seat. The main damping spring is located between the side end of the lower support set and the upper support set, the auxiliary spring is located between the upper end of the middle of the lower support set and the upper support set, a damper coaxial with the main damping spring is embedded in the main damping spring, and the two ends of the damper are connected to the upper support set and the lower support set respectively. An upper sealing unit and a middle sealing unit are arranged on the upper portion and the middle portion of the damper respectively. According to the scheme, the gravity center and the overall height of the suspension can be reduced, stress points of the balance beams are dispersed, and the service life is prolonged.

The application provides an engine piston skirt rigidity measuring device and method, and relates to the technical field of engine pistons. The engine piston skirt rigidity measuring device and method are suitable for measuring the rigidity of the engine piston skirt, adopt a full-displacement constraint mode to completely fix the piston, adopt a symmetrical pressurizing mode to pressurize the piston skirt measuring points, ensure that the piston skirt measuring points are balanced in stress, adopt a high-precision laser displacement sensor to non-contact accurately measure the piston stress points and surrounding measuring points, can accurately measure the displacement of the piston measuring points and surrounding stress deformation points, and can further solve the rigidity value of the piston. Not only can the application provide important data support for high-strength and lightweight piston design, but also can provide reliable boundary input parameters for piston dynamics calculation, and has extremely important significance for the service life of the piston and the research on the economy, reliability and safety of the engine.

The utility model provides a blade ring, a fastener and a high-pressure-resistant joint device, a pipeline connecting section and a fastener connecting section are arranged in the blade ring, and a connecting structure matched with the blade ring is arranged on the outer wall of the fastener. The joint device comprises a blade ring, a first fastener and a second fastener. The pipeline is fastened in a multi-stage mode through the connector device, under the condition that the pipeline and the connector device are both made of PEEK materials, the pressure resistance of the pipeline and the connector device can be larger than 80 Mpa and even reach 200 Mpa after the pipeline and the connector device are made of stainless steel or titanium materials, and the application requirements of ultra-high performance liquid chromatography and mass spectrometry can be met. Meanwhile, the fastening point positions of the pipeline to be fastened are distributed at all positions of the pipeline, so that stress point positions of the pipeline are dispersed, the stress concentration phenomenon of the pipeline is relieved, the stress borne by a single stress point of the pipeline is greatly reduced due to the dispersed stress point positions, and the situation that the pipeline is seriously deformed and blocked due to stress concentration is avoided.

The invention provides a vertical shaft double-layer steel shaft wall lifting system which comprises a base plate, a lifting rod parallel to a double-layer shaft is rotatably inserted in the base plate, a first limiting plate parallel to the base plate is fixed to the bottom of the lifting rod, and a second lifting lug is arranged at the top of the lifting rod. And the first limiting plate is rotated to be staggered with the base plate in a manner of rotating the lifting rod, so that when the double-layer shaft is lifted, the top surface of the first limiting plate can be in contact with and lift the bottom wall of the upper flange plate. The auxiliary mechanism is used for assisting in pressing the top wall of the upper flange plate corresponding to the first limiting plate in position before lifting. Hoisting connection is achieved by using the original pouring hole in the upper flange plate as a stress point, mounting and dismounting operation of the hoisting structure on the pouring hole can be efficiently completed before and after hoisting, the single-section hoisting efficiency of the double-layer shaft is improved, reutilization can be achieved, cost is saved, and it is ensured that the inner wall structure of the double-layer shaft is not damaged.

The utility model discloses a low-gravity-center lead screw type intelligent lifting working platform which comprises a building body, a heavy frame and a working platform body. A supporting structure is fixedly arranged on the outer side of each layer of beam body of the building main body; the heavy frame is sleeved with the working platform, a lifting device is arranged between the working platform and the heavy frame, and the working platform and the heavy frame move relatively through the lifting device so as to achieve the purpose of lifting; and the lifting device is positioned above the gravity centers of the heavy frame and the working platform. Compared with the prior art, the utility model has the advantages that the structure is simple, and the use is convenient; the problems that the gravity center of a lifted frame body is higher than the stress point of the lifted frame body, and the frame body overturns and falls due to the fact that the frame body is affected by moment are solved. The situation that a traditional protection platform can only achieve one-way falling prevention is thoroughly improved; the working platform can be provided with two anti-falling devices for protection during ascending or descending bidirectional movement; through reverse operation, the effect that the working platform descends on the periphery of the building body layer by layer is achieved; and labor, material and time costs are saved.

The utility model provides a novel small work robot, which relates to the field of carrying and stacking and comprises a base, a stand column and a universal arm, the stand column is arranged on the base, a lifting mechanism used for lifting the universal arm is arranged in the stand column, a counterweight assembly is further arranged in the stand column, the counterweight assembly is connected with the lifting mechanism through a chain, and the universal arm is arranged on the stand column. A first fixed pulley and a second fixed pulley are rotationally arranged on the top of the stand column side by side, the chain winds around the first fixed pulley and the second fixed pulley, one end of the chain on one side of the first fixed pulley is perpendicularly connected with the lifting mechanism, and one end of the chain on one side of the second fixed pulley is perpendicularly connected with the counterweight assembly. According to the novel small-sized robot, the two ends of the chain are vertically hung through the first fixed pulley and the second fixed pulley, so that stress points are located at the center positions of the lifting mechanism and the counterweight assembly, friction between the lifting mechanism and the guide rail and friction between the counterweight assembly and the guide rail are small during lifting, lifting is smoother, and abrasion is small; and the service lives of the lifting mechanism and the counterweight assembly are greatly prolonged.

The utility model discloses an ejection device for stamping die machining, which comprises a mounting seat assembly, a driving assembly is arranged at the top of the mounting seat assembly, an upper sliding seat is arranged at the top of the driving assembly, and an ejection assembly is arranged on the inner wall of the upper sliding seat; the ejection assembly comprises a mounting plate, a plurality of ejection heads are arranged at the top of the mounting plate, and a mounting rod is movably connected to the bottom of the mounting plate; the bottom of the ejection head is connected with the inner wall of the mounting plate in an inserted mode. According to the ejection device for stamping die machining, the ejection assembly is arranged and used in cooperation with the upper sliding base, in the using process, the installation rod can be rotated according to needs to disassemble the ejection assembly, and then the position of the ejection head is adjusted and installed according to a stress point and a stress supporting point in the workpiece stamping process in a new die; and then the ejection assembly is re-installed through the installation rod, so that the good cooperative use effect between the ejection assembly and the mold is achieved, the use effect of the device is improved, and convenience is provided for a user.

The invention discloses a special pulling device for a large case PCBA (Printed Circuit Board Assembly) board, which comprises a pulling handle and a plurality of pulling tensioners matched with the pulling handle, and the pulling tensioners are matched with mounting holes of the PCBA board, so that the stress positions of the PCBA board are the positions of the mounting holes. By arranging the pulling handle and the plurality of pulling expanders matched with the pulling handle, and the plurality of pulling expanders are respectively matched with the plurality of mounting holes, the plurality of mounting holes become a plurality of stress points, so that the PCBA board is subjected to a plurality of stresses at the same time when being pulled out, the stress at a certain position is balanced, the stress is uniform, the PCBA board is pulled out quickly and stably, and the pulling efficiency of the PCBA board is improved. And violent pulling is avoided.

The invention relates to the technical field of constructional engineering, and discloses a foldable cantilever scaffold device. Through the collaborative design of the folding assembly (the supporting piece and the adjusting rod) hinged to the I-shaped steel and the sliding assembly, the traditional upward pulling type and downward supporting type functions are integrated, and double-mode dynamic switching is achieved; the angle rotation of the supporting piece enables the device to be flexibly switched between a cantilever downward supporting mode and a cable-stayed anchoring mode; a U-shaped sliding block of the sliding assembly slides along a flange of the I-shaped steel, the position of a limiting rod is adjusted in real time along with the length of the cantilever through an adjusting bolt, and it is ensured that supporting force accurately acts on the optimal force bearing point; the equidistant holes of the adjusting rod are matched with the bolts of the limiting rod to provide multi-gear height adjustment to adapt to different floor heights and loads. The supporting piece and the adjusting rod are hinged, so that the anti-overturning force of an upward-pulling mode and the stability of a downward-supporting mode are enhanced respectively. The device can be folded and stored in I-shaped steel flange plates, the storage and transportation space occupancy rate is remarkably reduced, and standardized components support repeated use. The problems that a traditional scaffold is single in function and rigid in adjustment are solved through a modular pin joint, sliding locking and dual-mode bearing system, and a standardized high-adaptability supporting scheme is provided for high-rise and special-shaped structures.

The invention provides a Rockwell hardness tester and a hardness measuring method. The Rockwell hardness tester comprises a rack, a driving part, a pressure sensor, a guide rod and a distance measuring module, a test bed is arranged at the bottom of the rack; the driving part comprises a fixed seat and a moving shaft, the fixed seat is mounted at the top of the rack, and the moving shaft faces the test bed; in a natural state, the pressure sensor is separated from the moving shaft; in the working state, the pressure sensor abuts against the moving shaft. One surface of the pressure sensor facing the motion shaft is a spherical surface; one end of the guide rod is connected with the pressure sensor, and the other end is connected with a pressure head; the distance measuring module is located on one side of the motion shaft and used for measuring the motion distance of the motion shaft. The hardness measuring method adopts the Rockwell hardness tester. One end face of the pressure sensor is designed into the spherical surface, so that the contact between the pressure sensor and the moving shaft of the driving part is changed into point contact, the vertex of the spherical surface is a stress point, the accuracy of the stress position of the pressure sensor is ensured, and the hardness measurement precision is improved.

The invention discloses an anti-loosening wiring terminal, and belongs to the technical field of wiring terminals. The terminal comprises the terminal base and the wire inlet formed in the middle of the front end of the terminal base, the pressing head is installed in the middle of the upper portion of the terminal base, the lower pressing column is fixed to the middle of the lower portion of the pressing head, double fixation of the front end and the rear end can be achieved, and therefore the fixing effect of a butt joint wire end is improved; the problem that single fixation is easy to fall off is prevented, front and back fixation of the butt joint wire head can be completed only by pressing the pressing head, operation is simpler, working efficiency can be improved, and meanwhile when a wire body connected into the terminal base encounters external stress such as external pulling and the like, a main stress point acts on a rear end fixing position, so that the wire body is prevented from falling off. According to the utility model, the stress at the fixed position of the front-end contact seat can be reduced, the possibility that the contact seat is easy to loosen due to direct stress is prevented, and the stability of electrical connection at the contact seat is ensured.

The utility model discloses an aluminum profile connecting assembly for house construction, which comprises a first connecting piece which is a main transverse supporting piece, the outer surface of one end of the first connecting piece is movably attached to a second connecting piece, and the first connecting piece and the second connecting piece are internally provided with sliding grooves which are equal to the first connecting piece and the second connecting piece in length respectively. The included angle between the first connecting piece and the second connecting piece is of a right-angle structure. The second connecting piece is a main longitudinal supporting piece, and connecting locking pieces are movably installed in the first connecting piece and the second connecting piece respectively; the connecting locking piece comprises an elastic nut and a limiting column, the limiting column is movably inserted into the second connecting piece, and the elastic nut is in sliding fit with the sliding groove of the first connecting piece. According to the aluminum profile connecting assembly for house construction, the structures of the elastic nuts and the limiting columns are adopted, stress points are distributed at multiple positions, stress of the connecting face is effectively reduced, and the risk of deformation of the connecting face is reduced.

The utility model discloses a rear subframe low-pressure casting die, which relates to the technical field of rear subframe production and comprises a die holder, the top of the inner wall of the die holder is connected with an upper die, the bottom of the inner wall of the die holder is connected with a lower die, a groove body is arranged in the lower die, and a die pushing mechanism is arranged between the bottom and the top of the inner wall of the groove body. A driving mechanism is arranged at the bottom of the inner wall of the groove body and meshed with the mold pushing mechanism, under the action of the mold pushing mechanism and the driving mechanism, a rear auxiliary frame formed in a lower mold can be ejected out from four force bearing points, meanwhile, a hole groove can be blocked, and the mold pushing mechanism can be used for pushing out the rear auxiliary frame formed in the lower mold from the four force bearing points. The forming of molten metal in the mold core is not affected, a worker does not need to warp the rear auxiliary frame with the help of a crowbar in the process, the situation that the rear auxiliary frame is damaged is avoided, and therefore the demolding efficiency and the demolding quality of the worker are improved.

The utility model discloses a suspension protection device of a coal mine ventilation air duct, which belongs to the technical field of suspension, and comprises two bolts, the outer surfaces of the two bolts are jointly connected with two protection mechanisms in a sliding mode, the outer surfaces of the two bolts are both connected with nuts in a threaded mode, and the two protection mechanisms are connected with the nuts in a threaded mode. The coal mine ventilation air duct suspension device comprises two protection mechanisms, the interiors of the two protection mechanisms are jointly and rotationally connected with a suspension mechanism, the two protection mechanisms are matched with the suspension mechanism, the coal mine ventilation air duct can be suspended, the protection effect is achieved, after the device is installed, the ventilation air duct is suspended through three force bearing points at the same time, and the stability of the air duct is guaranteed to a great extent; and through the combined action of the three stress points, the device can be used for hanging the horizontal section of the ventilation air duct and can also be used for hanging the vertical section of the ventilation air duct, the continuity and stability of a ventilation system can be effectively guaranteed, the function of high hanging stability can be achieved, and the practicability of the device is improved.

The utility model provides a kind of inner circle grinding fixture structure for target material processing, belong to fixture technical field, to solve the smaller stress point when clamping, and currently in processing, possibly repeatedly positioning, lead to the problem of target material damage when clamping is very easy to cause, very easy to appear error, the inner wall of installation slot is rotatably connected with middle connecting rod in the utility model, and the both ends of middle connecting rod are respectively fixedly connected with first threaded rod and second threaded rod, the outer wall of first threaded rod is threadedly connected with first movable platform, the outer wall of second threaded rod is threadedly connected with second movable platform, and the end, away from second threaded rod, of first threaded rod is connected with motor, rotates first threaded rod and second threaded rod using motor, drives first arc-shaped clamping component and second arc-shaped clamping component to clamp target material to be processed, and the target material to be processed is wrapped and clamped and fixed, without repeatedly positioning, also avoid the problem that target material damage when clamping is very easy to cause due to the smaller stress point.

The invention discloses plunger pump assembling and machining equipment, and belongs to the technical field of mechanical assembling, the plunger pump assembling and machining equipment comprises an assembling robot, an assembling table and a conveying belt, the assembling table is used for assembling a plunger cylinder body and a plunger, the conveying belt is used for conveying the plunger, and the assembling robot comprises a track plate suspended through a supporting frame; the track plate is connected with an assembling mechanical arm through a track moving part, the assembling mechanical arm is connected with a lower control ring through a rotating switching part, and a plurality of assembling moving seats are arranged on the outer side wall of the lower control ring. Through the unique design of the clamping openings and upper and lower stress points in the clamping disc, the plunger is actively corrected and kept in the vertical state in the assembling process, it is guaranteed that the plunger is accurately inserted into a cylinder plunger hole in the vertical posture, the risk of scratching the inner wall of the hole is greatly reduced, the sealing performance and the service life of a plunger pump during operation are guaranteed, and the service life of the plunger pump is prolonged. Inclination of the plunger is fundamentally avoided, the problem that installation is inconvenient due to inclination of the plunger caused by preassembling of the sliding shoe is thoroughly solved, and accurate and efficient assembling is achieved.

The utility model discloses a novel high-strength earthwork standard room with sawteeth, and particularly relates to the technical field of earthwork standard rooms, the novel high-strength earthwork standard room with the sawteeth comprises a peripheral blocking frame, and an earthwork standard high-strength stabilizing device is arranged in the peripheral blocking frame; a combination assembly and a stabilization assembly. Compared with the prior art, the novel high-strength geocell with the sawteeth has the advantages that the clamping sawteeth on the side edges can be meshed and clamped with one another, so that the stress point of the whole geocell is increased, the problem that the supporting force is reduced and the geocell is damaged due to the fact that multiple groups of rhombic lattices are directly and non-uniformly stressed when the geocell is used is solved, and the effects of the sawteeth are as follows: the friction force is enhanced, the gripping force is strong, and the service life is prolonged. And the integral strength is enhanced, the load is uniformly distributed, the deformation of the soil body is limited, and the long-side punching array effect is achieved through the reinforcing rib effect generated by the reinforcing ribs in the reticular rhombic lattice units, so that the drainage function is improved, the ventilation function is increased, materials are saved, and the weight is reduced.

The utility model discloses a fixing structure for a constructional engineering formwork. The fixing structure comprises two steel plates which are symmetrically arranged. The two main screw rods are symmetrically arranged and movably penetrate through the two ends of the two steel plates; connecting screw holes are formed in the middle area of the inner side face of the steel plate at equal intervals, limiting ring grooves are formed in the middle area of the outer side face of the steel plate, and the limiting ring grooves and the connecting screw holes are concentrically arranged. An abutting assembly penetrates through the connecting screw hole, one end of the abutting assembly is located outside the steel plate, and the end face of the other end of the abutting assembly is clamped in the limiting ring groove. The pressing assembly is arranged in the middle area of the steel plate, so that flexible fixed-point pressing can be conducted according to the specific shape of the mold, and the problem that in a traditional fixing mode, the pressing force is insufficient due to the fact that the steel plate cannot be tightly attached to the non-planar area in the middle of the mold is effectively solved; therefore, the fixing structure can accurately identify and lock the force bearing point when facing a complex mold form.

The present invention discloses a hydraulic tunnel safety monitoring and early warning method, system, and electronic device. The method comprises: obtaining structural parameters of a hydraulic tunnel concrete structure and using the structural parameters to establish a finite element model of the hydraulic tunnel concrete structure; calibrating the finite element model based on engineering safety monitoring data to generate a calibrated structural analysis model; using the structural analysis model to identify the most unfavorable stress points of all failure conditions in the hydraulic tunnel concrete structure; and establishing an early warning indicator system based on the failure process and numerical relationship of the most unfavorable stress points, thereby providing risk early warning for the hydraulic tunnel concrete structure. The technical solution provided by the present invention solves the problem of the lack of safety early warning indicators for hydraulic tunnel concrete structures.

The utility model provides beam type hoisting equipment, and relates to the technical field of hoisting equipment. The beam type hoisting equipment comprises a crane, a winch, a fixed pulley assembly, a movable pulley assembly and a carrying pole beam, and a second steel wire rope of the winch is sequentially and alternately wound around the fixed pulley assembly and the movable pulley assembly so that the movable pulley assembly can move up and down along with winding and unwinding of the second steel wire rope; the carrying pole beam can lift heavy objects along with the up-and-down movement of the first lifting hook and the movable pulley assembly. Through the arrangement of the winch and the pulley assembly, the crane only bears about half of the gravity of a heavy object, so that the application range of the crane is expanded; and one stress point of the cross beam is dispersed into two stress points, so that the bending deflection of the cross beam is reduced.