131 results about "Safety engineering" patented technology

The invention relates to the technical field of safety engineering, in particular to a tunnel unfavorable geologic body recognition system and method based on fused geological information, and the method comprises the steps: data collection and preprocessing, geological information quantification, sample set construction and enhancement, Faster-RCNN model construction of fused geological information, model training and optimization, and unfavorable geologic body intelligent recognition. The intelligent recognition of the unfavorable geologic body of the tunnel is realized by fusing the geological information and the seismic wave method imaging data and utilizing the convolutional neural network model, the recognition precision and robustness are effectively improved, and effective technical support is provided for tunnel construction safety early warning.

The invention discloses a roadway roof damage time prediction method and system, and belongs to the technical field of mine rock mechanics and safety engineering. Comprising the following steps: recognizing a roof rock stratum structure and lithology of each layer through drilling peeping, and drilling a representative rock sample; determining the crack initiation strength and peak strength of the rock sample through a uniaxial compression test; selecting a plurality of stress levels between the axial strain and the acoustic emission signal to carry out a creep test, synchronously monitoring the axial strain and the acoustic emission signal, and determining an accelerated creep starting moment as the damage time under the stress according to the abrupt change characteristics of the axial strain and the acoustic emission signal; establishing a stress-failure time relation model of each lithology; finally, selecting a corresponding model to predict the damage time of rocks at different layers of the roof according to the actual rock stratum structure and ground stress state of the roadway; according to the method, accurate and reliable time prediction of the progressive damage process of the roadway roof is realized.

A detection method and device for predicting railway mud swells and mud leaks, comprising: step 1, obtaining a railway subgrade filling coefficient, a cyclic loading coefficient, and a radar detection coefficient; step 2, calculating a railway mud swell and mud leak risk value based on the subgrade filling coefficient, the cyclic loading coefficient, and the radar detection coefficient; and step 3, setting a risk value threshold, comparing the mud swell and mud leak risk value with the risk value threshold, and predicting the occurrence of mud swell and mud leaks when the mud swell and mud leak risk value is greater than or equal to the threshold. The present invention not only improves the accuracy of subgrade geological radar detection but also comprehensively considers subgrade filling and cyclic loading. Compared to existing technologies, the present invention comprehensively considers the three necessary conditions for mud swell and mud leaks, quantitatively and comprehensively predicting railway subgrade mud swell and mud leaks, meeting the requirements of resource conservation and quality and safety engineering construction.

The invention relates to the technical field of mine safety engineering and hydrogeological information processing, and discloses a multi-scale coal seam water spatial variation analysis and main control factor identification system for group-mine combined mining, which comprises a multi-source spatio-temporal data benchmark unification and preprocessing module for generating a standardized data set; the macro-micro orthogonal collaborative dynamic permeability tensor field construction module is used for establishing a permeability tensor field; a non-Euclidean hydraulic distance calculation module based on Riemannian manifold calculates a manifold hydraulic distance; a variable-lag embedded convergence cross-mapping causal identification module calculates causal coupling strength; a causal topology feedback driving model correction module iteratively corrects the model to convergence according to the difference; and the spatial variation characteristic analysis and main control factor output module outputs a main control factor list. According to the method, a causal topology feedback-driven model self-correction closed loop is constructed, a causal intensity reverse constraint physical model obtained through convergence cross mapping is used, and the problems that a traditional physical model cannot respond to mining-induced fracture evolution in real time, and pure data mining lacks physical interpretability are solved.

The invention relates to the field of coal mine safety engineering, and provides a coal mine gas control extraction effect dynamic evaluation and closed-loop control method, which comprises the following steps: S1, based on a basic threshold value in an extraction design scheme, periodically and dynamically calibrating the threshold value through a multiple linear regression model, and generating a dynamic threshold value matrix of a core index; s2, collecting multi-dimensional data to construct a fusion data matrix; s3, a dynamic multi-scale convolutional neural network model is constructed and trained, and the model comprises a variable-length filter generator which is used for adaptively generating a variable-length filter according to the input data so as to extract multi-scale time sequence features; outputting a standard state judgment result of the current extraction effect and a core index prediction value of a future preset time period in parallel; and S4, starting a three-level linkage feedback management and control flow coordinated by the AI model and the expert rule base according to the standard reaching state judgment result and the predicted value output in the step S3. Accurate evaluation and short-term prediction of core indexes such as the extraction flow, the gas concentration and the attenuation coefficient are achieved.

This invention discloses a power supply device for safety engineering equipment on construction sites, relating to the field of power supply devices. It includes a power cabinet and multiple batteries. The power cabinet is cylindrical with a notch on one side, where a side filter is installed. It should be noted that, in this embodiment, when the batteries are in use, the radial layout effectively increases the gap between batteries while ensuring the number of batteries is sufficient, increasing airflow and improving heat dissipation. A combination of central heat dissipation and rotating lateral heat dissipation ensures uniform heat dissipation for each battery, eliminating localized hotspots, improving heat dissipation efficiency, extending battery life, and reducing maintenance costs and replacement frequency. Furthermore, the sliding filter plate can slide open, directly exposing the batteries to further enhance heat dissipation. When not dissipating heat, it closes, providing ample protection against dust, moisture, and impact.

The utility model discloses a ventilation device for safety engineering of industry and trade enterprises, which comprises a ventilation pipeline, an air inlet and an air outlet, the protective screen plate is arranged at the position of an air inlet of the ventilation pipeline, and the protective screen plate is detachably connected with the ventilation pipeline; the air guide fan is arranged at the position, away from the air inlet, in the ventilation pipeline and used for guiding air; and the filtering assembly is arranged in the ventilating pipeline, is close to the air inlet and is used for filtering air. According to the ventilation device for the safety engineering of the industrial and trade enterprises, through the structural matching design of the ventilation pipeline, the protective screen plate, the air guide fan and the filtering assembly, the device can filter ventilated air, the situation that fluff drifts around to influence the environment is avoided, and through the structural design of the filtering assembly, the ventilation effect is improved. Therefore, the device can realize a double filtering effect and is convenient to replace and maintain.

The invention relates to the technical field of fire fighting, in particular to a self-adaptively adjustable fire-fighting tank auxiliary fire extinguishing device for safety engineering, which comprises a fire extinguishing tank and an injection pipe mounted at one end of the fire extinguishing tank, a nozzle is detachably mounted at one end of the injection pipe, and a core plate is fixedly arranged on the inner wall of the nozzle. A stage adjusting mechanism is arranged in the spray head and comprises a threaded barrel fixedly arranged on the outer wall of the injection pipe in a sleeving mode, the outer wall of the threaded barrel is in threaded connection with an adjusting sleeve, a movable frame is slidably arranged in the spray head in the vertical direction in a penetrating mode, and the top end of the movable frame abuts against the bottom end of the adjusting sleeve; according to the fire-fighting tank auxiliary fire extinguishing device, through flexible switching of a mist spraying mode and a columnar spraying mode, the fire-fighting tank auxiliary fire extinguishing device is suitable for various fire extinguishing scenes, the applicability of the fire-fighting tank auxiliary fire extinguishing device is effectively improved, a worker can conveniently and rapidly complete adjustment operation in an emergency fire, and the practicability is high. And the convenience of fire-fighting operation of safety engineering is further improved.

The present application belongs to the technical field of coal mine safety engineering, and particularly relates to a gas extraction blind area detection method and system based on three-dimensional space analysis and intelligent algorithm. The method is based on the secondary development of the AutoCAD platform. The system calls the AutoCAD ActiveX interface through VBA programming, realizes the automatic import of the extraction drilling data and three-dimensional modeling, and adopts the Bezier interpolation algorithm to construct the coal seam model under the influence of gas extraction. The present application realizes the automatic and high-precision detection of the gas extraction blind area, has high detection accuracy, greatly reduces the manual detection error, improves the coal mine gas control efficiency, and provides intelligent technical support for the prevention and control of gas disasters.

The invention relates to the technical field of safety protection, in particular to a protection device for well drilling safety engineering, which comprises a derrick and a drill column, a drill bit is fixedly connected to the bottom of the drill column, a drill floor is fixedly connected to the lower part of the derrick, protection plates are fixedly connected to the periphery of the bottom of the drill floor, a protection cavity is formed at the bottom of the drill floor, and each protection plate comprises an outer layer plate and an inner layer plate; a plurality of springs are arranged between the outer-layer plates and the inner-layer plates, the tops of the outer-layer plates are fixedly connected with the corresponding edges of the bottom of the drill floor, and the bottoms of the outer-layer plates are fixedly connected with the ground; the tops of the inner-layer plates are in sliding fit with the bottom of the drill floor, and transmission assemblies used for decomposing stress of the inner-layer plates to provide supporting force for the drill floor are arranged on the outer-layer plates. By means of the design of the protection plate of the double-layer structure, buffering is formed on impact of drilling splash, the service life of the protection plate is prolonged, and meanwhile the impact force of the splash is converted into supporting force on the drill floor through the transmission assembly so as to reduce vibration of the drill floor.

The utility model relates to the field of automobile safety engineering, in particular to a collision simulation test device for an automobile anti-collision beam. The utility model provides a collision simulation test device for an automobile anti-collision beam, which can conveniently adjust the horizontal angle and the inclination angle of a collision block and can conveniently evaluate the safety performance of an automobile under different collision conditions. An automobile anti-collision beam collision simulation test device comprises a bottom frame, supporting frames, supporting rods and the like, the front supporting frame and the rear supporting frame are connected to the upper side of the right portion of the bottom frame, and the multiple supporting rods are connected to the upper side of the middle of the bottom frame. A double-shaft motor is started to drive a moving wheel to rotate, so that an impact block moves, the horizontal angle of the impact block is adjusted, then a first air cylinder is started to drive a supporting plate to rotate upwards, a rotating block and a connecting piece rotate, and the inclination angle of the impact block is adjusted; and the effects that the horizontal angle and the inclination angle of the collision block can be conveniently adjusted, and the safety performance of the vehicle under different collision conditions can be conveniently evaluated are achieved.

The invention provides an arrangement optimization method for a multi-stage energy absorption component of a low-altitude logistics unmanned aerial vehicle. The method belongs to the crossing technical field of low-altitude intelligent equipment safety engineering and structural dynamics. The method comprises the following steps: carrying out regional function division on an unmanned aerial vehicle body based on a safety cabin and collapse frame integrated architecture, and generating internal safety cabin regional data and external collapse frame regional data; according to a regional function division result, deploying an initial topological structure of the multi-stage energy absorption component, and constructing an initial energy absorption component layout network; even under the inevitable falling working condition, the structure can still absorb most of kinetic energy through the external collapse area, and the peak acceleration to a ground target is reduced.

The utility model relates to the technical field of mine safety engineering, and discloses a ventilation performance detection device for mine safety engineering, which comprises a main body cabinet, the upper surface of the main body cabinet is fixedly connected with a supporting frame, the inner wall of the supporting frame is fixedly connected with a detection chamber, one end of the detection chamber is fixedly connected with a filtering device, and the other end of the detection chamber is fixedly connected with a ventilation device. Through the arrangement of the filter device and the dust cover, the device can protect sensitive detection elements in a severe mine environment and reduce interference of dust and impurities, so that more accurate ventilation performance data is obtained, a visual user interface is provided by the design of the control panel, and the device is more convenient to use. According to the mine safety monitoring device, an operator can easily monitor and adjust equipment setting, the working efficiency is improved, the device is allowed to flexibly move in a mine through the design of the moving wheels and the triangular supporting plate, and meanwhile the stability under various terrain conditions is guaranteed.

The utility model relates to the technical field of safety engineering, and discloses a novel safety platform ladder which comprises first ladder side rods, second fixing pieces are fixedly connected to the upper sides of the outer walls of the two first ladder side rods, the right ends of the second fixing pieces are rotationally connected with the second ladder side rods, and sliding rods are fixedly connected to the middles of the left sides of the two second ladder side rods. The bottom of the right end of the protective handrail is fixedly connected with an anti-falling net, the bottom end of the anti-falling net is fixedly connected with the top of the rotating folding rod, the adjacent sides of the two first ladder side rods are fixedly connected with a plurality of pedals, the top ends of the first ladder side rods are provided with damping mechanisms, and the damping mechanisms are used for damping the safety platform ladder. According to the safety platform ladder, when the safety platform ladder is used, a worker can step on the wide platform plate through the pedals, and under the auxiliary action of the protective handrails and the anti-falling net, the safety of the worker can be protected to the maximum extent, and the use safety is improved.

The invention relates to the technical field of coal mine safety engineering, in particular to water injection equipment and a water injection method for a strong-adhesion difficult-to-wet three-soft coal seam. The equipment systematically integrates a water injection pressure adjusting device, a moistening agent adding device, a water injection monitoring device and a protection device. According to the invention, by constructing a closed-loop feedback intelligent water injection system, the technical bottlenecks of poor water injection wettability, non-uniform water transverse dispersion and sweating or water leakage caused by easy plastic deformation of the coal wall due to complex coal body pore structure and low surface free energy in the strong-adhesion and difficult-to-wet three-soft coal seam are effectively solved; the dust falling efficiency and the engineering reliability of coal seam water injection are remarkably improved, and meanwhile the synergistic enhancement effect on coal mine rock burst prevention and control is achieved.

The application discloses a kind of environmental protection dust removal devices for safety engineering, specifically relates to the field of environmental protection technology of safety engineering, including shell, the lower end of the shell is fixedly connected with support frame, the front end of the shell is fixedly installed with control box, the lower part of the front end of the shell is fixedly connected with air inlet pipe, the inner surface of the shell is provided with filter assembly, the inner surface of the shell is provided with wet component above filter assembly.The environmental protection dust removal device for safety engineering disclosed in the application can realize the filtering mode of combination of dry and wet by being provided with filter assembly and wet component, so that air can rise in spiral form and mix with water mist at two protrusions, the spiral air flow can increase the contact area and time of air and water mist, thereby improving the adsorption and purification effect of water mist on fine particles in air, more particles can be captured and removed, and the filtering efficiency and stability of the whole device can be improved.

1. The name of the design product: more thematic graphical user interface for electronic equipment. 2. The use of the design product: the design product is used for an electronic device. 3. The design points of the design product: the graphical user interface content. 4. The picture or photo that best indicates the design points: change state figure 1. 5. The use of the graphical user interface: the main view is the graphical interface displayed when the user enters the provincial city lifeline safety engineering supervision platform; change state figure 1 is the graphical interface displayed after the user correctly logs in by clicking the "login" option in the main view; change state figure 2 is the graphical interface displayed after the user moves the mouse to "more topics".

The invention provides a protection device for construction safety engineering, and relates to the technical field of construction engineering protection, the protection device comprises a vertical frame, and the interior of the vertical frame is fixedly connected with a moving assembly; a support assembly; the supporting assembly comprises a plurality of mounting discs, the mounting discs are fixedly connected to the interior of the vertical frame in a linear array mode, outer columns are fixedly connected to the ends, far away from each other, of the two mounting discs, and supporting hoses are fixedly connected to the ends, close to each other, of the two mounting discs; according to the design, through a mechanical extrusion and temperature control dual-control mechanism, traditional passive triggering limitation is broken through, soft and hard modes can be switched according to needs in construction, environmental interference is compensated through temperature control, the material performance consistency is ensured, and when not in use, rapid storage can be achieved, the storage space is reduced, and the use is convenient. The problems that a traditional protection device cannot actively adjust the soft and hard characteristics and the performance of the non-Newtonian fluid is degraded due to temperature fluctuation are effectively solved.

The invention discloses a fault identification and risk management system for an electrochemical energy storage system, and belongs to the technical field of energy storage safety. Aiming at the problems that complex faults are difficult to process and thermal runaway is easy to cause in traditional threshold or model diagnosis, a diagnosis framework combining natural language processing and safety engineering is provided. The method comprises the following steps: constructing a fault database and generating a rare fault supplementary sample by using a large language model; semantic representation is formed through word segmentation, word vector embedding and feature extraction; adopting a self-attention enhanced convolutional neural network and introducing a dynamic learning rate to realize fault classification; through combination of Bow-Tie and failure mode analysis, prevention measures, emergency response and consequence evaluation are automatically output. According to the method, complex faults such as communication anomalies can be identified with high precision, the training convergence is fast, the calculation requirement is low, the method can be deployed in a battery management system, an edge server and a cloud edge collaborative architecture, real-time intelligent diagnosis and risk control are realized, and the safety and operation reliability of an energy storage system are improved.

The utility model discloses a foldable protective fence for safety engineering, relates to the technical field of protective fences, and aims to solve the problems that the protective effect is weakened due to a larger gap when the foldable protective fence is unfolded and the foldable protective fence is easy to topple over when the foldable protective fence is placed on an uneven ground. The same crosspiece mechanism is arranged on the outer walls of the rear ends of the two supporting frames, and leveling assemblies are arranged on the outer walls of the front ends of the two supporting frames; the two supporting frames are pulled to drive the cross-shaped folding frame to be unfolded, so that the sleeves slide on the outer surfaces of the sleeve rods, after the corresponding sleeves are locked by rotating the nuts, through cooperation of the multiple sleeve rods and the sleeves, gaps formed after the cross-shaped folding frame is unfolded are reduced, the pull blocks are pulled to drive the positioning blocks to enter the receding grooves, and therefore the cross-shaped folding frame is folded. The supporting seats slide to drive the sliding rods to move, and after the pull blocks are loosened, the positioning blocks are pushed to be inserted into the corresponding positioning grooves under the action of the springs, so that the two supporting frames are located on the same level.

The utility model relates to the technical field of building construction lifting appliances, and particularly discloses a safety protection lifting appliance for building safety engineering, which comprises a shell, a motor arranged on the shell, a roller arranged in the shell and driven by the motor, a cable wound on the roller and a lifting hook arranged on the cable, the fixed disc and the shell are mutually fixed, the rotary disc and the roller coaxially rotate, a plurality of clamping hooks are arranged on the rotary disc, a plurality of clamping grooves allowing the clamping hooks to be clamped therein are formed in the fixed disc, and when the rotating speed of the roller exceeds a set threshold value, the clamping hooks are clamped into the clamping grooves, and the clamping hooks are clamped into the clamping grooves. According to the electric hoist, the safety protection performance of the electric hoist can be effectively improved, safety accidents are avoided, the personnel safety in the construction process and the use period of a building is effectively ensured, and economic losses caused by the accidents are reduced.

The invention discloses a design method of an expressway maintenance construction area control safety management system, and relates to the technical field of construction safety engineering, and the method comprises the steps: collecting multi-dimensional dynamic data of an expressway maintenance construction area in real time, constructing a multi-dimensional interference factor model, and generating a dynamic interference index of the expressway maintenance construction area; based on historical construction accident records of the expressway, constructing an expressway high-risk period prediction model; associating and pairing vehicle navigation systems, pushing an optimal detouring path, and dynamically adjusting traffic measures of a construction area; for safety protection of constructors, the constructors wear smart bracelets to monitor physical indexes of the constructors in real time and evaluate physiological change conditions of the constructors, if abnormity is found, a construction area traffic organization scheme is automatically optimized, people-road-vehicle safety collaborative management and control are realized, and a safety management scheme of the expressway maintenance construction area is generated. The method has the beneficial effect that efficient and safe operation of highway maintenance construction is promoted.

The invention discloses a method for predicting and evaluating corrosion fatigue residual life of an oil pipeline, and belongs to the technical field of structural integrity management and safety engineering of oil and gas conveying pipelines. Comprising the following steps: acquiring pipeline corrosion defect original data, carrying out defect merging and identification to obtain a defect sample set, selecting a target defect sample, and obtaining the defect depth of the target defect sample at the detection moment; based on the defect sample set, statistical modeling is carried out on the corrosion defect depth, the maximum defect depth in a preset service period is obtained through prediction, and safety margin evaluation is carried out; constructing an electrochemical corrosion life model fused with a temperature-soil resistivity correction factor to predict the residual life; and carrying out pipeline residual strength evaluation and decision making by adopting an optimized ASME B31G standard and an SY / T 6151 standard. According to the method, all links are seamlessly connected, a complete solution from theory to practice and from technology to economy is provided, the operation and maintenance cost is effectively reduced, and the pipeline safety management level is improved.

The embodiment of the application provides a kind of tank area digital twin model construction method and corresponding digital twin model, belong to digital twin technical field and safety engineering technical field.The construction method includes: based on tank area whole process twinborn data, the data model suitable for tank area digital twin model is constructed;The data model is corrected based on tank area real-time field data, including making the data model: utilize deep learning algorithm to process the tank area real-time field data, to predict the change of the tank area real-time field data in future period;And corresponding entity three-dimensional model of tank area is loaded into the corrected data model, to form tank area digital twin model.The application realizes the real-time, dynamic, whole process twinborn system modeling for tank area.

The utility model relates to the technical field of safety engineering dust fall, in particular to a dust fall device for chemical production safety engineering, which comprises a water tank, the outer ring surface of a water accumulation ring is fixedly connected with the inner ring surface of a gas gun tube, and an atomizing nozzle is arranged on the inner ring surface of the water accumulation ring; the dust falling device for the chemical production safety engineering has the advantages that water is conveyed into the water accumulation ring by starting the high-pressure pump, then water mist is sprayed out through the atomizing nozzle, the draught fan is arranged in the air pipe, when the draught fan is started, air flow is generated in the air pipe and the air gun pipe, and dust falling is achieved. The throttle valve is driven by the rotating rod to rotate by an angle in the air pipe, so that the flow speed of the airflow passing through the interior of the air pipe can be controlled through the rotation of the throttle valve; therefore, the dust falling distance of water mist spraying at the output end of the atomizing nozzle can be adjusted by controlling the airflow of the air pipe.

1. Name of the product in this design: Safety Fence (Safety Engineering). 2. Purpose of this design: For safety protection during engineering construction. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to the technical field of mine safety engineering, in particular to mechanical coal field fire extinguishing equipment which comprises a rack sleeve, a hinge end is arranged on the outer cambered surface of the rack sleeve, an abutting end is arranged in the middle of the inner cambered surface of the rack sleeve, a step end is arranged at the position, close to the abutting end, of the rack sleeve, and the inner cambered surface of the step end is sleeved with a sealing cover. The inner arc face of the sealing cover is sleeved with a fire extinguishing fluid conveying cavity, and a pressing sleeve is sleeved between the sealing cover and the fire extinguishing fluid conveying cavity. A conical outer partition cover and an inner arc cover face of the first-stage fire extinguishing mechanism surround a fire extinguishing area, fire extinguishing force can be concentrated, medium loss is reduced, directional conveying of a fire extinguishing medium is achieved through cooperation of a permeation suite and a ventilation sleeve, it is ensured that the fire extinguishing medium accurately acts on the core portion of the fire area, and fire extinguishing efficiency is improved. And a frame structure and a heat insulation cover net of the second-stage fire extinguishing mechanism can complementarily cover the edge and the gap area of the fire area and cooperate with the first-stage fire extinguishing mechanism, the fire extinguishing range is widened, the fire extinguishing efficiency is improved, and fire re-combustion is effectively avoided.

The utility model discloses an anti-explosion exhaust structure of an air conditioning system, and relates to the technical field of safety engineering, the anti-explosion exhaust structure comprises an exhaust pipe, a group of water collecting trays are fixedly arranged in the middle of the interior of the exhaust pipe, and atomizing nozzles for atomizing a neutralization solution are fixedly mounted at the bottoms of the two water collecting trays at equal intervals; a blocking plate used for changing the wind direction is fixedly installed above one end of the exhaust pipe, and a plate type separator used for collecting waste liquid is fixedly installed below the end, away from the blocking plate, of the exhaust pipe. The atomization nozzle is matched to atomize the neutralization solution and then make full contact with harmful gas to generate neutralization reaction, compared with pure vortex adsorption, the neutralization reaction can more directly and effectively remove harmful ingredients, and the possibility that the poisonous gas is discharged outdoors when not fully treated is reduced.

This invention discloses a welding equipment and method for a construction scaffold in traffic safety engineering, relating to the field of construction scaffold welding technology. It includes a support mechanism comprising a workbench with two sets of support rods fixed to its top. A U-shaped frame is fixed to the top of each set of support rods, and a pedal frame is located on top of the U-shaped frame. The two sides of the U-shaped frame are tightly fitted against the inner wall of the pedal frame to position it. Two right-angle limiting frames are fixed to the top of the workbench. This invention changes the position of the welding points of the steel mesh, wrapping the steel mesh around the pedal frame with the welding points positioned below. This distributes the force partially on both sides of the pedal frame, reducing the tensile force directly acting on the welding position, reducing weld breakage, increasing the service life of the welding points, making the steel mesh more robust, reducing construction hazards, and preventing feet from stepping on the welding points, thus avoiding corrosion caused by dirt enveloping the welding points.

The utility model discloses a hoisting device for safety engineering, which relates to the technical field of engineering hoisting and comprises a bottom plate, moving wheels are symmetrically and fixedly arranged at four corners of the lower end of the bottom plate, balancing weights are symmetrically and fixedly arranged on two sides of the upper end of the bottom plate, and an adjusting mechanism is arranged in the middle of the upper end of the bottom plate. A reinforcing frame is fixedly arranged on the left side of the upper end of the bottom plate, a top plate is arranged at the top end of the adjusting mechanism, a transverse plate is arranged on one side of the lower end of the top plate, hooks are symmetrically and fixedly arranged on the two sides of the lower end of the transverse plate, and anti-falling mechanisms are arranged at the lower ends of the hooks. The lifting rod installed in a threaded mode can be pushed to move up and down through the rotating lead screw, the lifting rod can drive the winding disc and the hoisting plate to move synchronously through the top plate, the hoisting use height can be adjusted, hoisting can be conveniently carried out, meanwhile, when the height is large, the height can be conveniently reduced for daily maintenance, and the use effect of the device is improved.