59results about How to "Increase security risks" patented technology

The invention belongs to the technical field of rock-soil side slope protection, and particularly relates to an expansive soil side slope flexible ecological comprehensive supporting system which comprises an intercepting ditch, a vegetation protection layer, a composite waterproof layer, flexible anchor rods, water seepage and drainage pipes, cultivation and planting soil, a drainage ditch, a backfill soil layer, a step-shaped slope surface, a slope surface and slope protection vegetation. The slope surface is excavated into a step-shaped slope surface, a composite waterproof layer, expansive soil backfill soil, a vegetation protection layer and cultivation and planting soil are sequentially arranged on the step-shaped slope surface from bottom to top, and slope protection vegetation is planted and formed on the cultivation and planting soil; the composite waterproof layer is fixed to the step-shaped slope face through the flexible anchor rods. The vegetation protection layer and the slope protection vegetation together reinforce the shallow soil body, and the composite waterproof layer and the flexible anchor rod play a role in absorbing and relieving the received expansive force. The method has an ecological greening effect, has the functions of common supporting of the shallow surface layer and the deep layer of the expansive soil slope, flexible reinforcement and expansion reduction and allowable generation of a small amount of deformation, is simple in construction and high in efficiency, and can realize long-term stability of the shallow surface layer and the deep layer of the expansive soil slope.

The invention discloses an elevator monitoring system based on Beidou satellite positioning, and the system comprises an elevator person trapping event recognition module which is used for judging whether a person trapping event occurs in an elevator or not; the elevator operation characteristic data acquisition module is used for acquiring elevator operation characteristic data; the elevator fault recognition module is used for constructing an elevator fault recognition model and recognizing the elevator fault type; the active alarm analysis module is used for judging whether emergency alarm is needed or not according to the elevator operation characteristic data; the automatic alarm module is used for sending rescue data of people trapped in the elevator through short message services of the rescue unit in the elevator car and the Beidou satellite navigation system; the elevator posture monitoring module is used for continuously monitoring elevator posture data and recognizing the abnormal state of the elevator posture; and the elevator fault maintenance module is used for generating a maintenance work order of the equipment and synchronously updating the maintenance execution state of the fault elevator. According to the method, the comprehensive management level of all parties on elevator equipment is improved, the elevator operation management cost is reduced, and the elevator operation economic benefits are improved.

The invention belongs to the technical field of campus security, and discloses an internet-based campus security management system and method, and the system comprises a data obtaining module which is used for obtaining campus security monitoring data; the data processing module is used for preprocessing the campus security monitoring data to obtain a campus security comprehensive feature data set; the threat prediction module is used for training according to the campus security comprehensive feature data set to obtain a campus security threat prediction model, and predicting a campus security threat factor based on the campus security threat prediction model; according to the predicted campus security threat factor, judging whether the campus security has a threat; the threat diagnosis module is used for acquiring campus security threat data if a threat exists in the campus security, inputting the campus security threat data into the trained security threat diagnosis model, and predicting to obtain a campus security threat type; the emergency response module is used for formulating a corresponding emergency scheme according to the campus security threat type; and the intelligent level of management is improved.

The invention discloses a business collaborative scheduling method and device suitable for a decentralized multi-cluster Internet of Things, and belongs to the technical field of Internet of Things scheduling, and the method comprises the steps: deploying an algorithm in a control management scheduling function module on a cluster head node of each cluster of the multi-cluster Internet of Things, and the control management scheduling function module on each cluster head node calls an algorithm to complete an online processing process among a plurality of service requests so as to deploy the dynamically arrived service requests. The method can effectively prevent privacy leakage, and has the advantage of high deployment speed.

The invention discloses an oil-electricity hybrid dual-power material grabbing machine, and relates to the technical field of carrying equipment, the oil-electricity hybrid dual-power material grabbing machine comprises a material grabbing machine main body, a power mechanism is arranged on the upper surface of the material grabbing machine main body, a lifting assembly is arranged on the upper surface of the material grabbing machine main body, and a cab is fixedly mounted on the upper surface of the lifting assembly; clamping jaws of the grabbing assembly can rotate according to the specifications of materials, the materials are more compact, meanwhile, the upper portions of the materials are limited, the height of a cab can be changed according to requirements through the lifting assembly, a good view is provided for a driver, meanwhile, a buffering mechanism is arranged during falling, equipment abrasion is reduced, and the service life of the equipment is prolonged. And through the buffer assembly, shaking of the clamping jaw can be reduced on a bumpy road section, shaking caused by quick starting and sudden stopping of the materials during transferring is reduced, and the stability of material transferring is improved.

The utility model discloses an oil field pipeline conveying safety valve, which belongs to the technical field of safety valves and comprises a first outer shell and a third outer shell which form the oil field pipeline conveying safety valve, a second power device is mounted on the upper side of the third outer shell, and the output end of the second power device is fixedly connected with a third connecting block. The end, away from the second power device, of the third connecting block is fixedly connected with a second blocking valve in sliding connection with the third outer shell, the side edge of the second blocking valve is rotationally connected with a connecting plate, the side edge of the connecting plate is rotationally connected with a rotating shaft, and the end, away from the second blocking valve, of the connecting plate is rotationally connected with a fixing plate. According to the device, after a first blocking valve blocks an oil field conveying pipe body, a second power device drives a second connecting block to move, drives a second blocking valve to move, drives the angle of a connecting plate to change and drives a fixing plate and a clamping plug to move, and petroleum is conveniently conveyed into a collecting box.

The utility model relates to the technical field of wire wrapping machines, and discloses a paper-covered copper wire wrapping machine, which comprises a wrapping machine, the top surface of the wrapping machine is fixedly connected with a dustproof cover, and the bottom edge of the front surface of the dustproof cover is fixedly connected with a dustproof mechanism. According to the paper-covered copper wire wrapping machine, through the arrangement of the dustproof mechanism, when the paper-covered copper wire wrapping machine needs to be used, a moving window is pushed into deep grooves in the two sides in a sliding rail through pushing and pulling of a handle, the opening area is increased, after an internal copper wire is installed, the moving window is pulled out and folded, and then an internal machine can be isolated from the outside; the movable window is made of glass, so that the internal winding condition can be observed through the movable window, the effect of conveniently preventing dust from entering the device is achieved, and the problems that the dust settles on a paper-covered copper wire which is being wrapped, the uniformity and integrity of an insulating layer are damaged, the insulating performance is reduced, partial discharge is caused and the like are solved; the service life of equipment is shortened and potential safety hazards are increased.

The invention relates to the technical field of access control management, in particular to an access control system and method based on a face recognition technology, and the system comprises an access control linkage unit, and also comprises an image acquisition unit which is used for carrying out face image acquisition on a to-be-recognized user based on a camera according to a preset sampling period, and the face recognition unit is used for receiving the to-be-recognized user to obtain a face image sequence of the to-be-recognized user, and transmitting the face image sequence of the to-be-recognized user to the image preprocessing unit. Through the linkage of the face image acquisition unit, the image preprocessing unit and the face recognition unit, the safety and convenience of the access control system are effectively improved, the image acquisition unit automatically acquires the face image of the user to be recognized based on the preset period, and the face recognition unit quickly recognizes the image, so that the user experience is improved. The process not only improves the recognition speed, but also avoids the manual operation of traditional card swiping, password input and other modes, and simplifies the process of user access.

The utility model relates to the technical field of mechanical part machining, and discloses a punching device for part machining, which comprises a device body, a fixing block is fixedly connected to the inner bottom end of the device body, a connecting block is fixedly connected to the inner part of the fixing block, and an electric push rod is rotatably connected to the outer surface of the connecting block. An electric push rod is fixedly connected to the bottom end of the interior of the equipment body, a cylinder is fixedly connected to the output end of the electric push rod, a supporting plate is fixedly connected to the bottom end of the interior of the equipment body, and a fixing shaft is fixedly connected to the interior of the supporting plate. And a movable plate is driven by a rotating rod to rotate in a fixed concave block, and a pressing plate is driven by the movable plate to press downwards, so that a mechanical part can be fixed above a placement plate, and therefore, the fixation of a mechanical part body is facilitated, the position deviation in the machining and punching process is avoided, and certain potential safety hazards are improved.

The application discloses a kind of water-based dispersant and preparation method thereof, belong to pigment dispersant technical field.The water-based dispersant is random copolymer obtained by radical copolymerization of maleic acid mono-aromatic ester intermediate and hydrophilic polymerizable monomer, and hydrophilic carboxyl group and hydrophobic benzyl side chain or phenylethyl side chain are distributed in the side group of its molecular main chain.The dispersant is prepared by esterification, neutralization and water phase copolymerization three-step reaction, the preparation process of the application is green and environmentally friendly, no organic solvent residue, the obtained dispersant realizes pigment anchoring through the π-π conjugation of hydrophobic side chain, and the hydrophilic carboxylate group realizes electrostatic stabilization, and the double synergistic effect significantly improves dispersibility and storage stability, especially suitable for phthalocyanine blue and other aromatic ring-containing pigments dispersion, and can be widely applied in the field of paint, ink and the like.

The embodiment of the present application provides a kind of self-adapting power supply method and equipment, it is related to the technical field of wire-to-board connector.The method comprises: in the case where plug is connected with any one socket, the first quantity and rated current of each irradiation lamp in the lamp panel connected with plug are obtained from the nonvolatile memory, the working current of the lamp panel is determined based on the first quantity and rated current;Wherein, the nonvolatile memory is arranged in the lamp panel, to store the first quantity and rated current of each irradiation lamp in the lamp panel;The power supply control unit is switched for the socket based on the working current, so that the power supply control unit provides working current for the lamp panel through plug and socket.It is found that the plug and socket of wire-to-board connector in related art are prone to insertion error and have safety hazards.

The invention relates to the technical field of elevators, in particular to an elevator entrance protection method. The elevator hole protection device is adopted for construction, the elevator hole protection device comprises a telescopic device, the telescopic device comprises a supporting piece, a rotating column, a circular ring, an extrusion plate and a threaded sliding block, the supporting piece is arranged between the two protection upper frames, the end of the supporting piece is rotationally connected with the rotating column, and the threaded sliding block is slidably connected into the rotating column; and an extrusion plate is slidably connected to the interior of the rotating column and abuts against the threaded sliding block, and the end of the extrusion plate is rotatably connected with a mounting circular ring. When large-range adjustment is needed, the threaded sliding block is sucked into the rotary column, the protective upper frame can be directly pulled for coarse adjustment, when fine adjustment is needed, the threaded sliding block is extruded out to be in threaded connection with the protective upper frame, stepless adjustment can be carried out, the elevator hole can be completely matched, and the mode of an insertion rod and an insertion hole is replaced; only fixed point positions can be fixed, and the elevator hole cannot be adapted.

The utility model is suitable for the technical field of assembly trolleys, and provides an assembly trolley leg lifting device which comprises a trolley body and a supporting mechanism. The supporting mechanism comprises a fixed foot stool; the rotating shaft is arranged in the fixed foot stool; the movable foot stool is arranged on the rotating shaft; the first mounting blocks are arranged on the bottom side of the trolley body; the second mounting block is arranged on the inner side of the movable foot stool; the driving cylinder is arranged below the first mounting block; the trolley can sense changes of the surrounding environment in real time and automatically adjust the posture so as to adapt to different terrains and obstacles, when one side of the trolley body needs to be lifted to cross a supporting stand column or other obstacles, the trolley body can achieve accurate leg lifting height adjustment so as to adapt to the supporting stand columns with different heights and intervals, and the trolley body is convenient to use. According to the design, the adaptability and flexibility of the trolley body are improved, and the trolley body can efficiently and safely complete tasks in various working scenes.

The present invention provides a filtering device for water treatment, the filtering device comprising: a filter front cover; a filter rear cover, a filter assembly accommodating chamber is provided between the filter front cover and the filter rear cover; the axis of the filter rear cover and the filter assembly accommodating chamber coincides with the axis of the power shaft, the filter front cover is an asymmetric structure, and the center of gravity of the filter front cover is not on the extension line of the power shaft axis. The device of the present invention adopts an asymmetric design of the main structure, with one high and one low main structure, which can offset the vibration during the filtering process and increase the service life of the structure. At the same time, the device of the present invention has made a series of improvements to the seal around the filter medium, so that the filtering efficiency of the filtering device of the present invention is improved compared with the prior art.

This disclosure relates to the field of electric vehicles, and in particular to a fault feedback method and apparatus of an electric vehicle charging device, and a device. The method includes: acquiring charging device information of an electric vehicle charging device; determining fault information of the charging device based on the charging device information; acquiring, based on an original communication frequency of the charging device information and the fault information, an adjustment frequency higher than the original communication frequency, and the original communication frequency of the charging device information is set by an electric vehicle controller; and sending the charging device information to the electric vehicle controller according to the adjustment frequency, so that the electric vehicle controller determines a fault of the charging device based on the charging device information. In embodiments of this disclosure, a transmission speed of the charging device information is increased, so that the electric vehicle controller quickly determines and deals with the fault based on the charging device information, thereby reducing potential safety risks in charging.

The present invention relates to the technical field of elevator guide rail brackets, and discloses a spacing adjustment device for elevator guide rail brackets, comprising two fixed brackets, which are arranged opposite to each other; two fixed plates, which are respectively fixed on the two fixed brackets; two guide rail clamps; a first adjustment structure, which is arranged between the two fixed plates, and is used to adjust the distance between the two guide rail clamps; and a second adjustment structure, which is arranged between the two fixed plates, and is used to adjust the distance between the two guide rail clamps and the elevator shaft wall. The present invention allows staff to flexibly adjust the distance between the guide rail clamp and the elevator shaft wall, as well as the relative distance between the two guide rail clamps according to the specific installation environment and elevator operation requirements. This high flexibility ensures the accuracy and adaptability of the guide rail installation and meets the requirements of different elevator shafts and operating conditions.

The utility model discloses a hidden handlebar assembly for a bicycle. The hidden handlebar assembly is used for driving a front fork sleeve of the bicycle to rotate synchronously. The handlebar assembly comprises a handlebar body and a locking component, and the handlebar body is limited and fixed with the front fork sleeve through the locking component; the device is characterized in that the locking assembly comprises a limiting body, a guide block, an expansion set, a first adjusting bolt and a second adjusting bolt; the limiting body spans the front fork sleeve and forms a locking part and an assembling part which are positioned on the inner wall surface and the outer wall surface of the front fork sleeve; the assembling part and the locking part are correspondingly matched with the guide block and the inclined surface of the expansion group respectively; the guide block is arranged between the handlebar body and the outer peripheral wall of the front fork sleeve; according to the technical scheme, the bicycle front fork and handlebar assembly solves the problems that an existing bicycle front fork and handlebar assembly is not attractive in assembling effect and unstable in assembling structure, and due to the fact that a handlebar is prone to loosening, the handlebar, a front fork and tires are not end-to-end and asynchronous steering occurs.

The invention provides a cantilever splicing widening structure of an existing retaining wall of a mountain road. The cantilever splicing widening structure comprises the existing retaining wall, embedded steel bars, cantilever reinforced concrete, cantilever longitudinal reinforcing bars, cantilever annular reinforcing bars and anchor rods. A chiseled part within a certain height range of the upper portion of an existing retaining wall is chiseled, cantilever reinforced concrete is poured at the position of the chiseled part, the width of the cantilever reinforced concrete exceeds the width of the chiseled part to form a cantilever structure, and cantilever longitudinal reinforcing bars and cantilever annular reinforcing bars are poured in the cantilever reinforced concrete to form a cantilever structure. The cantilever reinforced concrete is connected with the existing retaining wall at the position of the chiseled part through the embedded steel bars, and the existing retaining wall is anchored on a foundation through the anchor rods; and the cantilever width of the cantilever reinforced concrete is less than 2m. The method can effectively solve the problem of widening the mountain road, reduce the influence on the environment, reduce the engineering scale, improve the construction safety and realize rapid construction, and has remarkable economic, social and environmental benefits.

The utility model relates to a hoisting machinery field, proposed single -beam electric hoist anti -falling safety protection special device, including single -beam, the bottom of single -beam is provided with the welding seat, the top of single -beam is provided with safety protection device, safety protection device includes the car driving wheel, the side of car driving wheel is located in the side of single -beam, the side of single -beam is provided with the car driven wheel, the bottom of single -beam is provided with the suspension axle, the side of single -beam is provided with electric hoist, the top of single -beam is provided with the frame, the side of frame is fixedly connected U shape sling, one end of U shape sling is provided with the protection rope, the end away from U shape sling of protection rope is located in the side of electric hoist, the side of frame is fixedly connected with the shell, through above -mentioned technical scheme, solved the problem that single -beam electric hoist anti -falling safety protection special device in related art cannot prevent electric hoist falling.

This utility model relates to the field of pipeline installation for high-purity gas supply devices, and more particularly to an auxiliary support for pipeline installation. It includes a base plate and an installation structure. Four auxiliary frames are fixedly connected to the upper surface of the base plate. An adjustment structure is provided on the upper surface of the base plate, comprising a hydraulic rod mounted on the base plate. A connecting plate is fixedly connected to the output end of the hydraulic rod, and auxiliary rods are fixedly connected to both sides of the connecting plate. A sliding groove is formed on the inner wall of each auxiliary frame, and a vertical rod is slidably connected to the inner wall of the auxiliary frame. An installation rod is fixedly connected to the upper end of each vertical rod, and a support frame is provided between two installation rods. The pipeline installation auxiliary support provided by this utility model has the advantages of facilitating the auxiliary installation of high-purity gas supply device pipelines, enabling convenient and rapid pipeline installation, and allowing for easy adjustment of the auxiliary support according to the installation height.

The utility model discloses a polyolefin insulation polyolefin sheath green environment-friendly high-temperature-resistant fireproof flexible cable, and relates to the technical field of cables. The cable comprises an inner conductor, a polyethylene sleeve layer is arranged outside the inner conductor, a filling layer is arranged outside the polyethylene sleeve layer, an insulating layer is arranged outside the filling layer, an isolating layer is arranged outside the insulating layer, a high-temperature-resistant layer is arranged outside the isolating layer, a first flame-retardant layer is arranged outside the high-temperature-resistant layer, and a second flame-retardant layer is arranged outside the second flame-retardant layer. A first flame-retardant layer is arranged outside the cable body, a second flame-retardant layer is arranged outside the first flame-retardant layer, a wear-resistant layer is arranged outside the second flame-retardant layer, an anti-oxidation coating is arranged outside the wear-resistant layer, and the number of the polyethylene jacket layers is five. According to the utility model, the high-temperature-resistant layer, the flame-retardant layer I, the flame-retardant layer II, the insulating layer and the anti-oxidation coating are arranged, so that the whole cable has the effects of environmental protection and high temperature resistance when a fire disaster occurs, and the problems that the cable is easy to burn to cause the fire disaster, the potential safety hazard is increased and the harm is caused to people are solved.

The utility model relates to the technical field of remote control aircraft driving structures, and discloses a driving structure of a remote control aircraft, which is characterized in that the left end of a driving motor is fixedly connected with a coupler, the left side of the coupler is clamped with an installation clamping ring, the left end of the installation clamping ring is fixedly connected with an installation rod, and the left side of the installation rod is inserted with a main body shell; and fan blades are fixedly connected to the surface of the mounting rod, a mounting groove is formed in the mounting clamping ring, and a coupler is arranged in the mounting groove. The coupling arranged on the left side of the driving motor is matched with the installation clamping ring for driving, the fan blades on the surface of the installation rod are conveniently driven to rotate, the installation clamping ring and the installation groove are arranged on the left side of the coupling, equipment can be conveniently disassembled and installed, it can be guaranteed that the fan blades rotate stably enough, and after collision occurs, the fan blades are not damaged. The fan blades can easily fall off, serious damage to the fan blades is avoided, and the service life of the remote control aircraft and the service life of the fan blades are prolonged.

The utility model relates to the technical field of communication cabinets, in particular to a communication cabinet with a rapid heat dissipation structure, which comprises a communication cabinet body, ventilation assemblies are respectively arranged on two symmetrical outer walls of the communication cabinet body, and a fireproof assembly is arranged between the two symmetrical outer walls of the communication cabinet body. A smoke sensor is fixedly installed on the top of an inner cavity of the fireproof assembly, an alarm is fixedly installed on the top of the outer wall of the communication cabinet body, a control module is fixedly installed on the top of the outer wall of the communication cabinet body, and opening and closing doors are rotationally installed on the two sides, close to the inner cavity of the communication cabinet body, of the outer wall of the communication cabinet body correspondingly. The communication cabinet has the advantages that rainwater and dust are prevented from entering the communication cabinet body to affect circuits in the communication cabinet body in the use process of the device, and the problem that when an existing device is arranged outdoors, rainwater and moisture enter the device through heat dissipation holes, and the possibility of short circuit and damage of the circuits in the device is increased is solved. And potential safety hazards of the device are increased.

This utility model belongs to the field of lighting technology and discloses a variable color temperature LED lens assembly for automotive lighting. It includes a substrate, a reflector, a first LED particle, a second LED particle, a heat sink, a cooling fan, a light / dark cutoff plate, a solenoid valve, an adjustment mechanism, and a lens. The reflector is mounted on the right side of the substrate, and its inner side is coated with aluminum to reflect light to the left. The first and second LED particles are mounted parallel to each other on the upper surface of the substrate. The heat sink is mounted on the right side of the upper surface of the substrate, increasing its surface area to dissipate heat from the substrate. The cooling fan is mounted on the lower surface of the substrate, generating airflow around the heat sink to enhance its heat dissipation capacity. The light / dark cutoff plate is mounted on the left side wall of the substrate. This design makes it easier to see road conditions in inclement weather, significantly improving driver safety. It also allows for changing the illumination range, making it suitable for different road conditions and reducing driver eye fatigue.

The utility model relates to air conditioning technical field, concretely provides a mobile air conditioner, aims at solving the problem of drainage noise. For this purpose, the utility model's mobile air conditioner includes: the shell, forms the cavity inside, outdoor air duct subassembly divides the cavity into the indoor cavity and outdoor cavity of upper and lower distribution, and outdoor air duct subassembly includes upper air duct board, lower air duct board and volute, and upper air duct board constructs the water receiving space of indoor heat exchanger, drainage pipe is communicated with water receiving space and is located in upper air duct board, and drainage pipe extends towards lower air duct board, and the water collecting box is shaped in lower air duct board and is located in the outside of volute corresponding to drainage pipe, and drainage pipe extends into the inside of water collecting box, and the water distribution part is located in water collecting box and extends towards upper air duct board direction in lower air duct board, and the water distribution part can make the condensed water of drainage pipe flow along the surface to air duct board. The water distribution part can make the condensed water of drainage pipe flow along the side to the bottom of water collecting box, so as to reduce the flow noise.

The present invention relates to a device and process for horizontal layered destacking of refractory brick stacks, comprising a supporting and protecting mechanism, a destacking machine, a horizontal transport platform, a lifting mechanism and a receiving hopper. The supporting and protecting mechanism comprises a double-beam steel frame and a kiln car protection frame. The lifting mechanism, the horizontal transport platform and the destacking machine are overall an upper, middle and lower three-layer structure. The process steps are as follows: S1: the horizontal transport platform transports the destacking machine to the top of the brick stack, the scraper plates on both sides are opened, and descend to a designated cutting surface, and the scraper plates on both sides are closed to achieve cutting of the brick stack; S2: the destacking machine rises and leaves the brick stack, and the horizontal transport platform transports the destacking machine to the top of the receiving hopper, and the crushed materials fall into a tool cart along the receiving hopper; S3: the above process is repeated for multiple times to complete the demolition after cutting and transporting the brick stack; S4: the tool cart transports the collected crushed materials to a jaw crusher to enter the next process, so as to solve the problems that the destacking process is complicated and cumbersome, the destacking and transporting process consumes a lot of manpower and material resources, the production efficiency is low, and safety accidents are easily caused.

The invention relates to the technical field of fabricated buildings, and discloses a large-span arched steel corrugated plate structure hoisting alignment device which comprises a plurality of arc-shaped hoisting plates symmetrically arranged front and back, a corrugated steel plate body is placed on the lower sides of the arc-shaped hoisting plates, and matched magnetic hoisting plates corresponding to the arc-shaped hoisting plates are arranged on the inner wall of the corrugated steel plate body. The front side and the rear side of the outer wall of the corrugated steel plate body are each provided with two sets of embedded hollow bolts. The large-span arched steel corrugated plate structure hoisting alignment device can effectively solve the problems that in the prior art, a traditional hoisting tool is difficult to resist external force interference such as hoisting inertia and wind power, so that the hoisting tool shakes, the position of a corrugated steel plate deviates, point contact enables stress to be concentrated on a hoisting point, the hoisting point is sunken and wrinkled, and the integrity of a component is affected; in the prior art, single hoisting needs repeated operations of multiple hoisting, adjusting and falling, so that the hoisting period is greatly prolonged, and the problems of fatigue of a hoisting tool and abrasion of a steel wire rope in the repeated hoisting process are also caused.

The utility model relates to the technical field of building equipment, in particular to a universal beam steel formwork lifting appliance which comprises a vertical beam, a cross beam, clamping plates, clamping columns, a fixing column and a steel rope, the vertical beam is fixedly connected to one end of the cross beam, the clamping plates are symmetrically and fixedly connected to the top of the cross beam, the clamping columns are movably connected with the clamping plates in a clamping mode, the fixing column is fixedly connected to the top of the vertical beam, and the steel rope is arranged on the vertical beam. The steel rope is fixedly connected with the clamping column and the fixing column, and the problems that in the prior art, when prefabricated beams and slabs are widely adopted, steel formworks are hoisted through steel wire ropes, consumed time is long, much manpower is needed, labor cost is high, potential safety hazards are large, and great risks exist are solved.

This utility model relates to the field of transformer technology, and more particularly to a miniature transformer, including a mounting plate on which a miniature transformer is fixedly mounted. A base plate is provided at the bottom of the mounting plate. Placement holes are correspondingly provided on both the mounting plate and the base plate. A driving block is slidably disposed within the placement holes. Four circumferentially spaced connecting rods are rotatably mounted on the bottom end of the driving block via a rotating seat. This utility model adjusts the distance between the driving block and the contact block by rotating the rotating ring, reducing the angle between the connecting rods and the driving block, and allowing the sliding block to slide in the sliding groove towards the placement groove. A clamping block is placed in the placement groove to limit the mounting plate, facilitating the replacement and disassembly of the miniature transformer. Combined with heat dissipation plates attached to the side walls of the miniature transformer, it dissipates the heat generated during operation, preventing excessive internal heat from increasing safety hazards.