594 results about "Suspender belt" patented technology

The invention discloses a unit type curved surface curtain wall installation device and method, and relates to the technical field of curtain wall construction, and the unit type curved surface curtain wall installation device comprises a plurality of detection units which are respectively installed on each control point on a unit structure body and are used for detecting actual measurement coordinates of the corresponding control points; the fine adjustment mechanism is connected to the lower end of the hoisting belt of the crane and is used for finely adjusting the position of the unit structure body; the control module is electrically connected to the detection unit and the fine adjustment mechanism; wherein the control module is configured to obtain actual measurement coordinates of each control point fed back by the detection unit; comparing the actually measured coordinates of each control point with pre-stored theoretical coordinates in a BIM model to obtain a deviation value of each control point; performing overall pose analysis based on the deviation value to obtain a pose deviation of the unit structure body in the space; generating a movement control quantity corresponding to each control point based on the pose deviation; and sending a movement control instruction to the fine adjustment mechanism according to the movement control quantity. The installation method has the effect of improving the installation efficiency.

The invention discloses a high-pier large-span extra-large bridge suspended pouring beam hanging basket construction method, and belongs to the field of bridge engineering construction.The method comprises the following steps that hanging basket rails are installed, the precision is controlled, and a hanging basket comprising a double-channel-steel main truss, a manganese steel sling, an arc-shaped flow guide plate and a honeycomb formwork is assembled; grading pre-pressing is carried out according to the specified multiple of the design load, and the pre-camber of the template is corrected by adopting a BP neural network to ensure that the finished bridge linear error meets the requirement; a mechanical-hydraulic-electrical integrated intelligent control system is deployed, and the traveling speed and synchronism of the hanging basket are controlled through double-oil-cylinder driving, a 5G digital twin platform and an edge computing technology, so that rapid alarm is realized when the load is abnormal; segmental circulation construction is carried out, and when the environment wind speed reaches a set value, a hydraulic rail clamping device is automatically locked; a model is established by using ANSYS software, and simulation verification is performed on multiple types of key working conditions to ensure that the safety coefficient of the structure meets the specification requirement. The construction precision and safety are guaranteed, and the method adapts to complex environments.

The invention provides a vertical adjusting device for a hanging basket sling in bridge cantilever construction. The vertical adjusting device comprises a hanging basket body, an adjusting master control platform, a sling, an adjusting control assembly, a temporary locking assembly, a measuring assembly and an auxiliary supporting assembly. One end of the hanging basket body is installed on a bridge, the other end of the hanging basket body is overhung to the outer side of the bridge, the adjusting master control platform is installed at the other end of the hanging basket body, and the lower end of the sling is connected with the hanging basket body. The adjusting control assembly, the temporary locking assembly, the measuring assembly and the auxiliary supporting assembly are installed in the adjusting main control platform, and the hanging belt penetrates through the adjusting main control platform and is vertically and adjustably arranged through the adjusting control assembly; the temporary locking assembly is temporarily clamped on the hanging belt, a plurality of holes are formed in the hanging belt at equal intervals, the auxiliary supporting assembly can vertically penetrate through the hanging belt through one hole, and the measuring assembly is in movable contact with the hanging belt. The invention relates to the technical field of bridge construction, and can solve the problems of insufficient precision and low efficiency of manual adjustment of a hanging basket sling in the prior art.

The utility model discloses an automatic calcium powder weighing and bagging structure, and relates to the field of bagging structures. An automatic calcium powder weighing and bagging structure comprises a supporting frame and further comprises a discharging pipe communicated with the lower portion of the supporting frame, a supporting plate is fixedly connected to the discharging pipe, and a supporting rod is fixedly connected to the supporting plate; the supporting rod is rotationally connected with a second rotating rod, and the other end of the second rotating rod is slidably connected with a sliding rod. The second rotating rod is fixedly connected with a hook, and the sliding rod is fixedly connected with a clamping plate. The ton bag is used for receiving the calcium powder falling from the discharging pipe; the hook is used for connecting a sling of the ton bag; when the sliding rod slides to drive the clamping plate to clamp and seal the bag opening of the ton bag, the second rotating rod and the hook rotate, and the hanging belt of the ton bag is tensioned towards the inclined upper part of the outer side by the hook; the material receiving opening of the ton bag can be clamped and sealed, dust is prevented from escaping when calcium powder is added into the ton bag, and meanwhile a user can replace and place a stacking bag conveniently.

The invention belongs to the technical field of pipeline hoisting, and particularly relates to a pipeline construction device which comprises a mounting plate, a winding cylinder and a folding assembly. A mounting lug is fixedly connected to the mounting plate, and the winding cylinder is located on one side of the mounting plate and rotationally connected with the mounting plate; a lifting sling is wound on the winding cylinder; a pair of supporting corbels is hinged to the mounting plate, and a first driving mechanism for driving the pair of supporting corbels to open and close is arranged on the mounting plate; one of the supporting corbels is provided with a sling hook and a limiting shaft; the folding assembly comprises a left side driving rod and a right side driving rod; a clamping assembly is arranged on the left side driving rod, and a pair of limiting rollers is rotationally connected to the right side driving rod. The supporting corbels are automatically opened and closed to support the pipeline, so that a heavy lifting belt is prevented from being manually threaded at the bottom of the unlimited pipeline; retracting and releasing of the lifting sling and locking / releasing of the hook are both completed through mechanical driving, and a worker only needs to insert the fixing shaft into the clamping assembly on the ground and thoroughly breaks away from a high-risk area.

A pulley system for assisting in the performance of exercises includes a first and a second belt member each having an attachment ring member on a first end and a handle on an opposing end, where the attachment ring members are configured for attachment to a horizontal bar and the first and second belt members are configured each for having a portion of the belt member and the belt member over-hanging the horizontal pullup bar. The pulley system further includes an arm support member having at least two pulley elements each interfacing with respective intermediate sections of the first and second belt members which are threaded through the at least two pulley elements and where the pulley system is configured for supporting a user under their arms using the arm support member while the user simultaneously grabs the overhanging handles for enabling the user to enhance a leg lifting exercise.

An apparatus for reducing wearer fatigue for use in a wearable safety harness system includes a dorsal chassis capable of engagement with one or more shoulder safety straps and one or more lower torso webbing straps, an attachment subassembly comprising of a D-ring, a self-retracting lifeline attachment point, lower torso webbing strap attachment point, and a force-reduction mechanism. The attachment subassembly is attached to the dorsal chassis via the force-reduction mechanism such that force-reduction mechanism absorbs vertical forces produced by the weight of a self-retracting lifeline. The force-reduction mechanism absorbs vertical forces produced by the lower torso webbing strap resulting from the attachment of tools or equipment to the lower torso webbing strap. The arrangement of the apparatus also promotes increased flexibility between the shoulder safety straps and the lower torso webbing straps torso safety strap, thereby reducing wearer fatigue.

A cover for soft armor has a mantle extending from front waist to rear waist, with a head / neck opening and formed of an outer fabric layer and an inner liner secured to the outer fabric layer at particular locations. An additional liner is positioned between the outer fabric layer and the inner liner and secured to the inner liner to produce a sling along with the inner liner, positioned to receive and support portions of the soft armor at front and back of the mantle. The sling is openable and closable at a bottom of the sling for insertion of soft armor portions. At front and back the inner liner is split along a vertical center line providing for opening left and right portions upwardly and outwardly, for convenient loading of the armor.

The invention discloses a double-hanging-point permanent magnet direct-driven automatic turnover mechanism, and belongs to the technical field of crane lifting appliances. According to the technical scheme, the double-hanging-point permanent magnet direct-drive automatic turnover mechanism comprises a cross beam connected with a crane through a connecting piece, and further comprises two sets of first supporting plates symmetrically and fixedly connected to the two ends of the cross beam, and a first belt wheel is rotationally connected between each set of first supporting plates; the lifting belt is wound on the first belt wheel and is used for lifting a large roller workpiece; the hydraulic telescopic rod is vertically and fixedly connected to the middle position of the cross beam, and a mounting frame is mounted at the telescopic end of the hydraulic telescopic rod; the driving wheel is attached to the surface of a workpiece for limiting and driving overturning, the problems that when a traditional lifting appliance is overturned, the workpiece shakes seriously and is difficult to position are solved by combining pressure detection and an automatic adjusting mechanism, and the lifting appliance has the advantages of improving overturning stability, reducing workpiece shaking and enhancing safety.

The invention provides a center pin lifting appliance for a metro vehicle bogie, and relates to the field of metro construction, and the center pin lifting appliance is characterized in that an adjusting auxiliary frame is slidably mounted below a lifting lower arm; an adjusting auxiliary seat is slidably arranged on one side of the adjusting auxiliary frame; by means of the X-shaped self-clamping holding claw mechanism formed by the lifting lower arms, efficient and stable automatic centering and clamping can be achieved, the adjusting auxiliary base connected with one side of the lifting arm can make close contact with a center pin column of a metro vehicle bogie, the swinging and overturning risks caused by the high gravity center are effectively eliminated, the safety and stability in the lifting process are remarkably improved, and the lifting efficiency is improved. The problems that shaking and deflection are extremely prone to occurring in the lifting process, the surface and threads of the center pin are collided and damaged, a lifting belt possibly unhooks or slides, remarkable potential safety hazards are brought, and meanwhile the operation efficiency and the overhaul quality are affected are solved.

The invention discloses a modular hoisting introduction method for a large condenser. The modular hoisting introduction method comprises the following steps: S1, preprocessing a condenser module and planning a path; s2, pre-condition verification before hoisting is carried out, and installation supervision inspection reports of a civil engineering slow construction structure, a main traveling crane and an auxiliary traveling crane in a hoisting area and the qualification of special operating personnel are inspected; s3, single-machine trial hoisting and leveling are conducted, a first hoisting beam and a first hoisting belt are connected through a main traveling crane, the condenser module placed on the bracket and the bracket are hoisted to the position, 100-200 mm higher than the conveying device, of the bottom, standing is conducted for 10 minutes, and the stress condition of a hoisting sling and the deformation condition of the condenser module are monitored; and S4, double cranes are cooperatively hoisted and introduced step by step, and the condenser module located on the 0-meter layer on the left side of the factory building frame beam is hoisted rightwards and introduced into the-7.15 m installation position. The main travelling crane and the auxiliary travelling crane are matched, modular hoisting and introduction of the condenser are carried out step by step, an obstacle frame beam is ingeniously bypassed, and the problem that the large condenser is difficult to hoist and introduce in a narrow space is solved.

A container handling vehicle for lifting a storage container from an underlying framework structure includes a container lifting assembly and a vehicle body. The container lifting assembly includes a lifting frame for releasable connection to a storage container, a lifting shaft assembly, and a plurality of lifting bands. The lifting bands are connected to the lifting frame and the lifting shaft assembly such that the lifting frame may be raised or lowered by operating the lifting shaft assembly. The vehicle body includes a sidewall and a cantilevered section from which the lifting frame depends. The cantilevered section extends laterally from an upper end of the sidewall. The container lifting assembly features a lifting frame guide assembly comprising a first guide device and a cooperating second guide device. The first guide device is provided on the lifting frame. The second guide device is slidably connected to the sidewall via at least one vertically extending rail, such that the second guide device can move in a vertical direction relative to the sidewall. The first guide device and the second guide device are arranged to interact with each other when the lifting frame is adjacent the sidewall, such that horizontal movement of the lifting frame relative to the vehicle body is restricted.

A harness shock absorber assembly for a personal protective equipment and a harness shock absorber for such a shock absorber assembly. The shock absorber assembly comprises a deformable element exhibiting a mechanical resistance against deformation and a flexible strap comprising a middle portion and two protruding portions facing away from each other. The middle portion is tightly wrapped around the deformable element such that pulling the protruding portions away from each other deforms the deformable element. A fall protection safety harness comprising a harness shock absorber assembly according to the present disclosure. A method of retrofitting a harness shock absorber according to the present disclosure to a fall protection safety harness or to a SCBA harness. The method comprises the steps of: providing a fall protection safety harness or a SCBA harness comprising a strap, providing a shock absorber according to the present disclosure comprising a deformable element; and wrapping at least one of the flexible straps of the harness tightly around the deformable element of the harness shock absorber to form the harness shock absorber assembly. The deformation of the deformable element of the harness shock absorber assembly absorbs energy impacting on the personal protective equipment and thereby protects the user's body from impacts or injuries. The shock absorber assembly can easily and reliably be retrofitted to a fall protection safety harness or to a SCBA harness and thereby increase the safety for the user.

The utility model discloses a hanging basket sling fine adjustment device which is arranged on a cantilever beam and comprises an upper base, a lower base, a first clamping bolt, a second clamping bolt, a buffer device and a clamping groove ruler. The upper base and the lower base are two plane supporting plates which are arranged in parallel; the clamping groove ruler is a hollow steel cylinder and is axially provided with a plurality of positioning holes which penetrate through the cylinder wall at the same interval as the hanging belt, the upper end is fixedly connected with the upper base, and the lower end is in sliding fit with a hole which is formed in the middle of the lower base and matched with the hanging belt in size; the two sets of buffer devices are respectively arranged on two sides of the clamping groove ruler and between the upper base and the lower base; the first clamping bolt transversely penetrates through the steel sling positioning hole and is located above the upper base to be supported and fixed in a limited mode, and the second clamping bolt penetrates through the clamping groove ruler and the steel sling positioning hole and is located above the lower base to be supported and fixed in a limited mode. According to the adjusting device, only the clamping bolt needs to be loosened, moved and adjusted, and compared with a traditional complex manual adjusting mode, operation steps are reduced, and working efficiency is improved.

This invention discloses an integrated bridge under-floor support structure, installed beneath the bridge deck to bear construction loads. It includes two main beams aligned with the bridge deck and a traveling device for supporting the main beams. One end of each main beam is located beneath the bridge deck and is equipped with a bottom support device, while the other end extends outward relative to the bridge deck and is equipped with a grabbing device. One end of the main beam is suspended from the bridge deck via a support beam and a hoisting mechanism, providing additional support. The main beam and the bottom support device can move relative to each other, eliminating the need for disassembly during movement and improving construction efficiency. After the main beam extends outward relative to the bridge deck, the other end is suspended from a suspended beam via a grabbing assembly and steel slings. The suspended beam is hoisted using a bridge erecting machine to provide support, thereby resisting overturning moments and cantilever deflection. Simultaneously, during the main beam's passage through the span, several traveling devices move along the direction of the main beam, alternately supporting and traveling, thereby adjusting the support position of the main beam and improving overall safety and stability.

The utility model discloses a hanging basket sling adjusting mechanism, belongs to the technical field of building construction, and provides the following technical scheme mainly aiming at the problem that the height of a bearing beam is inconvenient to adjust in the conventional hanging basket sling device. Comprising two groups of hanging basket cross beams, the tops of the two sets of hanging basket beams are connected with the adjusting assembly. The adjusting assembly comprises a bearing beam, rotatable adjusting lead screws are arranged at the tops of the two sets of hanging basket cross beams, the bearing beam is connected with the two sets of adjusting lead screws in a vertically movable mode, a hanging belt is arranged in the bearing beam in a penetrating mode, a plurality of sets of hanging belt holes are formed in the hanging belt at equal intervals, two sets of semi-circular supporting seats are arranged at the top of the bearing beam, and a working pin shaft is arranged between the two sets of semi-circular supporting seats. One end of the working pin shaft penetrates through one group of sling holes; through the arrangement of the two sets of spiral tops and the two sets of adjusting lead screws, when the device is installed, the adjusting lead screws are matched with nuts on the adjusting lead screws, an operator only needs to rotate the adjusting lead screws to adjust the height of the bearing beam, and the time for adjusting the height of the bearing beam is shortened.

The utility model discloses a flexible freight bag sling sewing machine, and relates to the field of flexible freight bag processing, in particular to a flexible freight bag sling sewing machine which comprises a sewing machine body, the body is provided with a U-shaped supporting plate, the supporting plate is provided with a positioning strip used for supporting a flexible freight bag sling, the positioning strip is internally provided with a movable cavity, and the movable cavity is internally provided with a clamping groove. According to the flexible freight bag sewing machine, the problems that when an existing flexible freight bag sewing machine is used for sewing the hanging belts, the fixing effect on the hanging belts is poor, the hanging belts are prone to deformation, sewing lines can move, use of the flexible freight bags can be affected, and the safety of the flexible freight bags is affected are solved. Moreover, the widths of different suspenders are different, and the required positions of suture lines are also different.

This invention provides a combined adjustable sub-beam structure, including a main sling, a main beam assembly, a sub-beam assembly, and a fuselage sling. The main sling is fixed above both ends of the main beam assembly, and the sub-beam assembly is suspended below both ends of the main beam assembly via auxiliary slings. The fuselage sling is suspended below the sub-beam assembly. This combined adjustable sub-beam structure has the following advantages: during aircraft emergency rescue, the longitudinal length of the required lifting equipment can be adjusted according to the aircraft type. The adjustment can be achieved by increasing or decreasing the number of sub-beams and adjusting the number and position of the sub-beam positioning holes, enabling the rescue of various aircraft types.

This utility model relates to a liquid-filled oil-free gas sealing system, comprising a primary seal and a secondary seal disposed between the floating roof and the tank wall of a storage tank, and a burst-suppressing membrane disposed between the primary and secondary seals. The primary seal includes an annular sling installed on the side of the floating roof and located between the floating roof and the tank wall; a liquid-filling pipe is disposed within the annular space between the sling and the floating roof; and a liquid-filling tube is disposed on the liquid-filling pipe. The secondary seal includes a pressure plate fixed at its lower end to the top of the outer ring of the floating roof; a sliding piece fixed at the upper end of the pressure plate and pressed against the tank wall by the elasticity of the pressure plate; and a barrier membrane disposed on the back of the pressure plate. The upper and lower ends of the burst-suppressing membrane are connected to the sliding piece and the side of the floating roof, respectively; the middle of the burst-suppressing membrane is kept parallel to the vertical tank wall by its own weight. This liquid-filled oil-free gas sealing system of the utility model has good sealing effect, low oil and gas loss, and good safety.

The utility model relates to the technical field of lifting beams, in particular to a stress self-adjusting type lifting beam for aircraft rescue, which comprises an auxiliary lifting beam and a main lifting beam arranged at the upper part of the auxiliary lifting beam, a lifting belt for lifting an aircraft is arranged at the bottom of the auxiliary lifting beam, an auxiliary lifting beam belt is arranged between the auxiliary lifting beam and the main lifting beam, and a first lifting ring is arranged at the bottom end of the auxiliary lifting beam belt. A base is fixedly mounted at the bottom end of the first lifting ring, two pairs of limiting rods which are vertically staggered and used for fixing the first lifting ring are arranged on the outer wall of the base, and mounting boxes which are fixedly mounted on the upper portion of the auxiliary lifting beam and used for containing the first lifting ring are arranged on the outer walls of the two pairs of limiting rods. According to the utility model, the two mounting plates drive the limiting rods to relieve the limitation on the base through the extension and retraction of the electric push rod and the movement of the movable block, so that the auxiliary lifting beam and the lifting belt arranged at the bottom end of the auxiliary lifting beam are freely separated, the manual operation is convenient, and the lifting operation time is shortened.

The invention belongs to the technical field of hoisting of airplane rudders, and relates to hoisting equipment and a hoisting method for overturning, disassembling and assembling an airplane rudder. Comprising a hanging bracket, a horizontal hanging belt and a vertical hanging belt. The main body structure of the hanging bracket is a frame, two horizontal hanging point rings are arranged at the horizontal gravity center position of one side of the frame, one vertical hanging point ring is arranged at the vertical gravity center position of each of the two sides of the frame, and a control surface connecting seat is arranged on the working end surface of the frame; supporting ground feet are arranged at the bottom of the frame. And an overturning support frame is arranged on one side of the vertical gravity center line of the frame and is used for supporting the rudder when the rudder is overturned. According to the technical scheme, the frame type hoisting equipment based on the hoisting belt, the hoisting hoist and the hoisting frame is connected with the special hoisting points on the rudder through the bolts, so that the functions of horizontal moving hoisting, overturning and vertical hoisting of the rudder are realized, and the hoisting requirements of dismounting and mounting of the rudder during assembly or maintenance of an airplane are met.

The utility model discloses a decagonal barrel which comprises a barrel body, the upper portion of the barrel body is detachably connected with a barrel cover, the barrel body comprises a side wall and a barrel bottom, the cross section of the side wall is in a regular decagon shape, the side wall is defined by a rectangular plate in a bending mode, the lower side of the rectangular plate is bent towards one side of the barrel bottom to form a connecting portion, and the connecting portion is connected with the barrel cover. The connecting part is overlapped and connected with the barrel bottom; the garbage can further comprises a hanging belt, the hanging belt penetrates through the lower side of the can bottom, hanging rings are formed at the two ends of the hanging belt, and the hanging rings penetrate out of the side wall. The decagonal barrel can be folded and stored during transportation, and the barrel body is simple in overall structure and convenient to disassemble and recycle.

The utility model relates to the field of shifting machines, in particular to an electric shifting machine which comprises a moving base, a seat mechanism and a lifting mechanism. The seat mechanism comprises a hanging belt and two oppositely-arranged hanging arms, the two ends of the hanging belt are detachably connected to the two hanging arms respectively, the front ends of the hanging arms extend to the front side of the telescopic rod and are connected with the telescopic rod, a supporting block is arranged on the rear side face of the telescopic rod to support the hanging arms, and a lever structure is formed. When the lifting arm is used, the other end of the lifting arm bears downward pressure, the supporting block serves as a supporting point, limiting force is applied to the lifting arm through the connecting structure between the front end of the lifting arm and the telescopic rod, the length of a force arm of the limiting force is increased, the stability of the lifting arm in the using state is ensured, the overall structural strength is improved, and breakage and falling are avoided.

The utility model relates to the technical field of flexible freight bags, and discloses a flexible freight bag which comprises a flexible freight bag body, the flexible freight bag body sequentially comprises a base layer and a wear-resistant layer from inside to outside, the flexible freight bag body is upwards provided with an opening, and a binding rope is arranged at the opening. The outer walls of the two opposite sides of the top of the flexible freight bag body are connected with hanging belts in a sewing mode, a reinforcing assembly used for reinforcing the supporting performance of the flexible freight bag body is arranged on the flexible freight bag body, a moisture-proof pad is arranged below the flexible freight bag body, and the shape of the moisture-proof pad is matched with that of the flexible freight bag body. The connecting assemblies are arranged on the reinforcing assemblies and the moisture-proof pad, the moisture-proof pad is detachably connected with the reinforcing assemblies through the connecting assemblies, and the moisture-proof pad made of polyurethane is excellent in waterproof and moisture-proof performance, resistant to abrasion and aging, long in service life and capable of effectively isolating ground moisture and protecting the flexible freight bag body and objects in the flexible freight bag body against moisture erosion.

This utility model relates to an adjustable lifting boom sling, belonging to the technical field of lifting equipment. It includes an upper clamping plate, a lower clamping plate, lifting lugs, a left connecting piece, a right connecting piece, and a sleeve. The upper and lower clamping plates are connected by the left and right connecting pieces, forming opposing upper and lower clamping surfaces. The sleeve is fitted onto the left and right connecting pieces, and the lifting lugs are welded to the upper clamping plate. The beneficial effects of this utility model are: by adjusting the distance between the upper and lower clamping plates, the main chord of the lifting boom is clamped in the upper and lower directions; by adjusting the size of the sleeve, the main chord of the lifting boom is clamped in the left and right directions. This solves the problem of welding multiple lifting lugs to the boom sections during boom-changing assembly, saving production costs and solving the safety hazard problem caused by relative sliding of the lifting boom during sling lifting.

The utility model provides an intelligent construction elevator car flap plate linkage mechanism, which relates to the technical field of elevators, and comprises a car and a car door arranged on the car, the car door comprises a car upper door connected with the car in a sliding manner and a car lower door hinged with the car, a motor used for providing power for the car upper door is arranged on the car, and the car upper door is connected with the car lower door in a sliding manner. A motor drives a winding roller to rotate, then a lifting belt is driven to lift or put down an upper car door, the upper car door drives a steel cable fixedly connected with the bottom end to be lifted or put down, a lower car door is synchronously opened or closed under the action of a first pulley, a second pulley and a third pulley, and through the arrangement of a guardrail, when the lower car door is opened or closed, the steel cable can be lifted or put down. Through fixing of a second gear, a second conical straight composite duplicate gear can be forced to rotate, then a first conical straight composite duplicate gear is driven, a first gear is driven, a guardrail is driven to be opened and closed, and a linkage structure of the motor, the car upper door, the car lower door and the guardrail is formed.

The application discloses a large equipment hoisting device and method, belongs to the technical field of engineering hoisting machinery, and solves the problems of attitude imbalance caused by gravity center deviation and low manual adjustment efficiency. Technical scheme points of the application include: a T-shaped guide rail groove and a slidable main lifting lug are arranged on the top surface of a balance beam, and first to third lifting points are symmetrically arranged at both ends; a hydraulic system is integrated in the beam to drive the main lifting lug to move; a first hoisting assembly is hingedly connected with a first lifting lug of equipment and a second hoisting assembly is connected with a second lifting lug of equipment through a lifting belt and an electric reversing chain; a closed-loop control system monitors load differences of beam ends through longitudinal pressure sensors and monitors load differences of equipment lifting lugs through transverse pressure sensors, and an adaptive adjustment module automatically controls displacement of a hydraulic cylinder or an angle of a reversing chain according to longitudinal and transverse load difference values, so that bidirectional imbalance correction is realized. The application is mainly used for accurate and safe hoisting of large equipment.

A sling feeding mechanism comprises a lifting assembly and a movable stock bin, the lifting assembly is provided with a lifting seat capable of ascending and descending, the lifting seat is provided with a telescopic sling lifting plate, the movable stock bin is provided with an opening allowing the sling lifting plate to be inserted therein, and the sling lifting plate is arranged on the movable stock bin. During feeding, the hanging belt is stacked in the movable stock bin and is supported by the hanging belt lifting plate inserted into the opening; the lifting belt taking mechanism is provided with a lifting belt suction cup, and the lifting belt on the uppermost layer of the movable stock bin is taken away through the lifting belt suction cup; the sling sleeving mechanism is provided with a movable sling opening assembly, and the sling taken away by the sling suction cup is opened through the sling opening assembly. The hanging belt opening assembly comprises two horizontally-opened and closed opening claw supports, two vertically-opened and closed hanging belt opening claws are arranged on the opening claw supports, and supporting shafts for opening hanging belts are arranged at the free ends of the hanging belt opening claws. According to the device, automatic continuous operation of feeding, taking and opening of the hanging belt can be achieved, and the operation efficiency is improved.

According to the inner and outer double-ring integrated flat sling provided by the utility model, the annular flat sling is connected with the connecting belt, and the sling is divided into two double-ring structures with different sizes, so that the sling can flexibly select suitable rings for operation according to different hoisting requirements in the use process, and frequent replacement of slings with different specifications is avoided; therefore, the operation efficiency is effectively improved. The annular flat hanging belt and the connecting belt are each provided with a first flat woven layer, a second flat woven layer and a third flat woven layer which are arranged in a laminated mode, the outer sides of the laminated layers are provided with a wear-resistant layer in a surrounding mode, the overall structure has good wear-resistant performance and high tensile strength, hoisting loads can be effectively dispersed, the service life is prolonged, and safety is improved. The two ends of the connecting band and the annular flat sling part are overlaid and then continuously woven, the outer side of the connecting position is sequentially wrapped with the two wrapping layers, and the two wrapping layers are sewn and fixed through the sewing threads, so that the firmness and the abrasion resistance of the connecting position are further enhanced, and the risk that the connecting position is damaged in the high-load hoisting process is reduced.