62results about How to "Improve hoisting safety" patented technology

The invention discloses a fabricated light-weight energy consumption wall component of a shear wall. The wall component comprises a reinforced concrete wallboard. Holes are arranged in the reinforced concrete wallboard, energy consumption parts are fixed in the holes and comprise hole pre-burying boards, connecting plates and yielding energy consumption steel plates, the hole pre-burying boards are pre-buried in the reinforced concrete wallboard, the connecting plates are vertically and medially connected to inner sides of the hole pre-burying boards, and the top and bottom of each yielding energy consumption steel plate are connected with the corresponding connecting plate. According to the wall component, the holes are arranged, so the weight of the component is lightened, earthquake force borne by the wall is reduced, the component can be conveniently transported, transportation cost is reduced, meanwhile hoisting pressure in the construction process is relieved, construction safety is guaranteed, and construction efficiency is improved; the steel plate shear wall type energy consumption parts are arranged in the holes, shear deformation of hole positions occurs under the action of shear force, energy consumption of the steel plates is achieved through buckling, damage to the concrete wallboard can be reduced, and safety of the shear wall under the earthquake action is effectively guaranteed.

The invention relates to a slope joint mechanism and a concrete box girder lifting appliance. A connecting block is installed at the left end of a base in a vertically sliding mode. An extrusion plate is hinged to the right end of the base. The connecting block is provided with a first connecting rod, a second connecting rod and a third connecting rod which are parallel to one another. The left ends of the connecting rods are hinged to the right end of the connecting block. A vertical rod is arranged on the right side of the connecting block and hinged to the first connecting rod, the second connecting rod and the third connecting rod at the same time. The right ends of the first connecting rod, the second connecting rod and the third connecting rod are provided with longitudinally arranged rotating shafts. The extrusion plate is provided with a sliding groove, and the rotating shafts are arranged in the sliding groove. A downward acute angle is reserved between the third connecting rod and the extrusion plate. The concrete box girder lifting appliance comprises two slope joint mechanisms arranged symmetrically, wherein the two slope joint mechanisms are connected through a supporting beam, the two ends of the supporting beam are connected with the connecting blocks correspondingly, and the extrusion plates are arranged below the supporting beam. The slope joint mechanism and the concrete box girder lifting appliance are ingenious in structure and convenient to operate.

The invention belongs to the field of concrete prefabricated box girder hoisting, and particularly relates to a concrete prefabricated box girder rapid hoisting appliance. The hoisting appliance comprises a left hoisting device and a right hoisting device, wherein adjusting devices for adjusting the distance between the left hoisting device and the right hoisting device are arranged on the left hoisting device and the right hoisting device; and the left hoisting device and the right hoisting device are the same in structure and each comprise an L-shaped support, a first positioning mechanism and a second positioning mechanism, wherein the first positioning mechanism is arranged on the upper half part of the L-shaped support, the second positioning mechanism is arranged on the lower half part of the L-shaped support, two symmetrically arranged auxiliary travelling wheels are arranged at the bottom of the L-shaped support, and the top of the L-shaped support is provided with two symmetrically arranged hoisting rings. According to the hoisting appliance, prefabricated box girders with different specifications can be rapidly hoisted without binding by means of steel wire ropes, mutualfriction between the steel wire ropes and the prefabricated box girders can not be generated in the hoisting process, and the hoisting safety is improved.

The invention provides a shackle with overload protection function and belongs to the field of hoisting machinery. Due to the special use occasions, complex hoisting environment and methods, the safety requirements for hoisting shackles are getting higher and higher, and it is urgent to develop a shackle product with overload protection function. The present invention is composed of a "U"-shaped shackle body, a shaft sleeve, a pin shaft, a shackle nut, a safety pin, a wireless transmitting instrument, a wireless receiving control instrument and a large-screen display; the shaft sleeve is placed on the "U"-shaped shackle body In the middle of the "U" shape of the pin, the two are set in the middle of the pin shaft as a whole; one end of the pin shaft has a built-in wireless transmitter, and the other end of the pin shaft is fastened by a shackle nut, and a safety pin is installed on the shackle nut. The design and manufacture of the pin shaft is a resistance strain gauge structure with dual functions of force bearing and sensing weight change, wireless transmitting instrument and wireless receiving control instrument transmit signals, and overload alarm.

The invention provides a monitoring system for solving a lifting blind area of a tower crane, which solves the technical problem of existence of a visual blind area during working of the tower crane. The monitoring system comprises a camera device, a first wireless net bridge, a display screen, a first controller, a scenery complementary electricity generation device and an accumulator; the first wireless net bridge includes a wireless camera emitter and a wireless camera receiver; the wireless camera emitter is fixed on an amplitude car frame, a signal input end thereof is electrically connected with a signal output end of a camera, and a signal output end thereof is in wireless connection with the wireless camera receiver; the wireless camera receiver is mounted in a control room of the tower crane, and is electrically connected with the first controller; and a signal output end of the first controller is electrically connected with a display. The monitoring system has the beneficial effects of: realizing visualization of the working blind area of the tower crane and effectively improving the lifting safety of the tower crane.

The invention discloses a unilateral glass rib-reinforcement cage structure for a shield tunnel portal diaphragm wall. The structure comprises an underground diaphragm wall reinforcement cage, a tunnel portal steel ring is tightly attached to and connected to the soil backing side face of the underground diaphragm wall reinforcement cage, an annular reinforcement truss which is concentric with thetunnel portal steel ring is connected between a soil facing side face and a soil backing side face of the underground diaphragm wall reinforcement cage, the annular reinforcement truss is located onthe periphery of the tunnel portal steel ring, the parts, located on the inner periphery of the tunnel portal steel ring, of soil facing side vertical reinforcements striding over the tunnel portal steel ring are replaced by vertical glass fiber bars, and the parts, located on the inner periphery of the tunnel portal steel ring, of soil facing side horizontal reinforcements striding over the tunnel portal steel ring are replaced by horizontal glass fiber bars. The tunnel portal steel ring is used for receiving and pre-burying a shield tunneling machine when serving as a main body structure, and the arranged annular reinforcement truss is used for ensuring that the glass fiber bars are not influenced by gravity to be infinitely broken when the reinforcement cage is lifted, so that the lifting safety of the reinforcement cage can be ensured, and the stress requirement of a wall body can be met.

The invention provides multifunctional lifting equipment for architectural engineering convenient to install. The equipment comprises an H-shaped bearing steel frame, a baffle plate bracket, a controlswitch, an adjusting hydraulic column device, an anti-falling hanging hook device, a lifting motor device, an anti-collision spring column device, a movable wheel, a waterproof box, an adjusting switch, a control wire, an oil wire rope, an illuminating lamp tube, a lamp base and a rainproof cover. Through arrangement of a hydraulic extension cylinder and a hydraulic extension rod, the height adjustment of the lifting equipment is facilitated, and the problem of incapability of adjusting the height is solved; through arrangement of an anti-falling spring piece, hung objects are prevented fromunhooking to damage, the lifting safety of the lifting equipment is improved, and the problem of no anti-falling clamping ring on a hanging hook is solved; and through arrangement of a damping pipe, an anti-collision spring and a damping cylinder, a lifting motor and a limiting roller are protected from colliding in left-right translation, and the problem of no collision preventing function is solved.

The invention discloses a construction method for a prefabricated column to be lifted in position for one time. Before concreting, turning-over holes and lifting holes are embedded at designed positions through polyvinyl chloride (PVC) pipes, and mechanically connected lifting riggings are matched, so that the precast column bears force equally and uniformly during lifting. The method aims to protect finished products and avoid dangers of high-altitude rigging dismounting during one-time lifting in position of a precast column. According to the construction method, the construction is simple, the operation safety factor is high, the cost of a prior embedded disposable steel ring is saved, and the lifting efficiency and the safety are improved. According to the construction method, a large-size prefabricated part can be lifted in position once and the construction procedure is simplified in a lifting process of the large-size prefabricated part.

The invention discloses an integral lifting tool for an anode roasting fire wall, which has the advantage of better safety. The integral lifting tool comprises a lower wall support, an upper wall clamping plate and a pre-pressing mechanism, wherein the pre-pressing mechanism is connected between the upper wall clamping plate and the lower wall support, and a wall body containing space is defined by the upper wall clamping plate and the lower wall support; the pre-pressing mechanism comprises a left frame rod and a right frame rod, the left frame rod and the right frame rod are arranged in a bilateral symmetry way, wherein the upper ends of the left frame rod and the right frame rod are connected with a hanging connecting rod through rotation shafts, and the hanging connecting rod can be rotatably connected with the upper wall clamping plate; the lower ends of the left frame rod and the right frame rod are respectively and rotatably connected with the lower wall support, wherein the lower rotation connecting point positioned on the lower end is positioned outside the upper rotation connecting point positioned on the upper end; lifting points of a lifting mechanism are distributed by a lifting point distributing mechanism to sub-lifting points formed in the middle parts of the left frame rod and the right frame rod; and during lifting, the gravity of a wall body is driven by the pre-pressing mechanism, so that the upper wall clamping plate trends to move to the lower wall support to clamp the fire wall between the upper wall clamping plate and the lower wall support. The integral lifting tool has the advantages of simple and clever structure, stability and reliability.

The invention relates to a hanging tool for precast concrete box beams. According to the scheme, the hanging tool for the precast concrete box beams comprises a beam. The beam is provided with two vertical positioning holes. The two vertical positioning holes are symmetrically arranged along the vertical section in the longitudinal direction of the beam. The two ends of the beam are correspondingly connected with vertical beams which are arranged below the beam. Vertical beams are provided with extruding blocks which are located below the beam. Extruding blocks are provided with vertical through holes which are matched with the vertical beams. The vertical beams are inserted into the vertical through holes on the extruding blocks through the lower ends of the vertical beams. A structure which enables the extruding blocks to move vertically on the vertical beams is formed. The extruding blocks are provided with fixing holes. The fixing holes are located under the positioning through holes. The side surfaces, close to the fixing holes, of the extruding blocks are inclined planes. An obtuse included angle is formed between the upper end surfaces of the inclined planes and the extruding blocks. The hanging tool for the precast concrete box beams is ingenious in structure and convenient and easy to operate, the problem of uneasy fixing of the precast concrete box beams before hanging is solved, meanwhile, the safety of hanging is improved, and by using the side surfaces of the precast concrete box beams as bearing surfaces, damages for the precast concrete box beams are low.

The invention discloses a mounting device and a mounting method for a steel casing of an underwater drilling cast-in-place pile. The mounting device comprises a suction bucket, a water / gas passing hole and a magnetic mounting top cap, wherein the water / gas passing hole is formed in the top of the suction bucket; the magnetic mounting top cap comprises an annular top cap and an electromagnet; the steel casing of the underwater cast-in-place pile is mounted by adopting a suction bucket technology; the steel casing penetrates through soil by vacuumizing the suction bucket of the mounting device,gas is injected in the suction bucket under high pressure and the mounting device is removed by adopting a hoisting method of a crane, the soil to be excavated on the inner side of the steel casing isonly disturbed in the mounting process, the soil at the periphery of the steel casing is not disturbed, and the liquidation risk in the construction period of the soil at the periphery of the underground drilling cast-in-pile foundation is effectively reduced; and the soil in the suction bucket is damaged in the dismantling process of the mounting device, so that the subsequent penetration of thesteel casing is facilitated, the construction period is beneficially shortened, and the construction cost is reduced. The mounting method is safe and reliable, and convenient and quick, and has a wide engineering application prospect.

The invention discloses a hoisting tool and a hoisting method for a universal shaft of a vertical rolling mill, belonging to the technical field of rolling mill hoisting construction. The invention includes a main boom and an auxiliary boom, the main boom and the auxiliary boom are distributed in a cross-shaped structure, the main boom is provided with auxiliary support components and lifting lugs, and the auxiliary support components are used for complete lifting Auxiliary support for the shaft body of the cardan shaft in front of the cardan shaft, the main hanger and the auxiliary support assembly are both slidably connected to the auxiliary hanger, one end of the auxiliary hanger is fixedly installed with a counterweight, and the auxiliary hanger The other end of the rod is rotatably connected with a connecting frame 1 for installing the cardan shaft, which effectively ensures safety and stability during hoisting and improves hoisting efficiency.

The invention discloses an auxiliary hoisting device of a construction hoist. The auxiliary hoisting device is used for hoisting and installing a motor variable-speed motor of the construction hoist. The auxiliary hoisting device comprises a stand column, a winch and a cross arm, wherien the bottom of the stand column is fixedly connected to a fixing point of the hoist, the top of the stand column is fixedly connected to the cross arm, the winch is fixed to the stand column, pulleys are arranged at the top of the stand column and the tail end of the cross arm correspondingly, a cable of the winch is wound around the pulleys to be connected to a to-be-hoisted piece, the stand column is provided with a hollow outer column body and a lifting column, the lifting column is arranged in the outer column body in a sleeve mode, a hydraulic jack is further arranged in the outer column body, the bottom of the hydraulic jack is fixed to the outer column body, the top of the hydraulic jack makes contact with the bottom of the lifting column, and the hydraulic jack is used for controlling the height of the lifting column.

The invention discloses a deep foundation pit concrete supporting structure with hoisting holes being pre-formed and a construction method thereof. The concrete supporting structure comprises a concrete waist beam and concrete supports which are mutually connected; the concrete waist beam is provided with a plurality of waist beam pre-cutting surfaces; the multiple waist beam pre-cutting surfaces divide the concrete waist beam into a plurality of waist beam pre-cutting sections; and a waist beam hoisting hole pipe is arranged in each waist beam pre-cutting section in a penetrating and pre-buried mode. The concrete supporting structure can guarantee hoisting safety of concrete supporting blocks. The construction method of the concrete supporting structure comprises the steps that structural steel bars of the concrete waist beam and the concrete supports are bound; the waist beam hoisting hole pipes and supporting hoisting hole pipes are arranged in the concrete waist beam and the concrete supports correspondingly, and the waist beam hoisting hole pipes and the supporting hoisting hole pipes are bound on the structural steel bars through binding wires; and a formwork is erected, the concrete waist beam and the concrete supports are poured, and the formwork is removed after pouring The construction method is simple and feasible, and the situation that in concrete pouring, the waist beam hoisting hole pipes and the supporting hoisting hole pipes are dislocated can be avoided.

The invention provides equipment for removing tracks in a shield tunnel so as to solve the technical problem of low steel track loading and transporting efficiency during the operation of removing thetracks in the shield tunnel. The equipment can run on the tracks in the shield tunnel and comprises a track transporter, a fixed rack, a linear movement mechanism and a lifting mechanism, wherein thefixed rack is fixed to the track transporter, and the fixed rack extends to the outer side of the tail of the track transporter; and the lifting mechanism is mounted on a movable block of the linearmovement mechanism, a base of the linear movement mechanism is mounted on the fixed rack, and the linear movement mechanism can drive the lifting mechanism to move above the lifting center of a to-be-loaded steel track behind the track transporter and above a loading center of the track transporter. The equipment is suitable for the lifting and transporting operation of the steel tracks in the shield tunnel.

The invention relates to an operation method of a concrete box girder sling by using bevel attaching mechanisms. The operation method comprises the following steps that 1, preparation before hoistingis conducted, the purpose is to move the two bevel attaching mechanisms to the two sides of a concrete box girder, a supporting girder 11 is moved to the position above the concrete box girder, and connecting blocks 2 in the two bevel attaching mechanisms are fixed to the two ends of the supporting girder 11; 2, the bevel attaching mechanisms are arranged and hoisted, and the purpose is to arrangeand hoist the bevel attaching mechanisms to make extruding plates of the bevel attaching mechanisms be completely attached to the side faces of the concrete box girder and simultaneously rise with the concrete box girder; and 3, the bevel attaching mechanisms are separated, specifically, when the concrete box girder rises to the predetermined position, the bevel attaching mechanisms and the concrete box girder are separated; and the effect of circularly using hoisting operation is achieved.

The invention relates to a multi-crane cooperative lifting operation method and device, and cranes, wherein the operation method includes the steps: communication connection is established among various cranes; one crane is selected as a main machine from all the cranes, and the other cranes are selected as slave machines; in the lifting operation process, the main machine obtains lifting workingcondition information of all the cranes, and calculates the target lifting speeds of all the cranes according to the lifting work condition information; and all the cranes control themselves to operate with the corresponding target lifting speeds. The operation method achieves data sharing among all the machines, and has good real-time performance of information acquisition; the way of unified command of the main machine and distributed control of all the machines is beneficial for synchronizing the lifting speeds of hoisting hooks during operation of multiple machines, the relative stabilityof the lifting position is ensured, the lifting is prevented from generating unbalanced loading, the possibility of breaking or tipping of crane jibs and other risks is reduced, and the work efficiency and the hoisting safety can be improved.

The invention discloses a hydrogenation reactor for petrochemical engineering and belongs to the technical field of petrochemical engineering. An inlet distributor is fixed on an upper spherical cover, a catalyst entering the hydrogenation reactor is fully dispersed and diffused, full contact between crude oil and the catalyst is realized, the crude oil is fully cracked and decomposed in a refining device, and the effective utilization rate of the catalyst can be increased. An outlet collector is placed at the bottom of a lower spherical cover and can recycle the catalyst which is not fully utilized by the crude oil, effective utilization of the catalyst is further improved, the crude oil refining cost is reduced, and the crude oil refining benefits are increased. A longer thermocouple isreliably fixed on the inner wall of the hydrogenation reactor in an inner extension tube support manner, the structural strength of a thermocouple sleeve is improved, and bending or damage to the thermocouple sleeve during usage is avoided.

The invention discloses an integral hoisting sling for long vertical steel bars, which is used for lifting multiple steel bars at one time, and is characterized in that it includes an upper hoisting beam connected by a steel wire rope and a lower socket-type steel bar swing-proof limiting device. The hoisting beam includes splints on both sides to clamp the steel bars by bolt locking; the socket-type steel bar anti-sway limit device includes a socket-type steel bar limit seat, and the socket-type steel bar limit seat is horizontally arranged side by side. Intervals are provided with limit sockets for corresponding insertion of each hanging steel bar, and a lock plate for locking the steel bars in the limit sockets is also included, and the lock plate is fixed with the socket-type steel bar limit seat by bolts. The spreader can vertically lift multiple super-long and large-diameter steel bars in the same row at one time. Swing problems under the influence of eccentric loads.

The invention relates to a wall-attaching type hoisting hanging bracket capable of achieving horizontal large-angle stepless adjustment. The wall-attaching type hoisting hanging bracket comprises a cantilever steel beam, a cantilever steel beam base, suspended cables, suspended cable bases and a join node. The cantilever steel beam is an I-shaped steel beam, and bolt holes are punched in the bottom flange of the steel beam according to a certain distance so as to supply suspending hanging points. The cantilever steel beam base is a node which is hinged in the horizontal direction and is rigidly connected in the longitudinal direction, and the node allows the cantilever steel beam to properly rotate in the horizontal direction. One end of each suspended cable is connected with the corresponding suspended cable base through a shackle, the other end of each suspended cable is connected with the cantilever steel beam through a shackle, and the lengths of the suspended cables can be adjusted through a chain block. Long holes are formed in base plates of the cantilever steel beam base and the suspended cable bases, and steel plates with holes are welded to the base plates, so that a suspension system flexibly moves on a wall to meet the requirements for different arrangement. According to the wall-attaching type hoisting hanging bracket capable of achieving horizontal large-angle stepless adjustment, hoisting objects with different specifications are conveniently hoisted, angle adjustment in the hoisting process can be achieved, and the hoisting speed and safety are effectively improved.

The invention discloses an integral lifting tool for an anode roasting fire wall, which has the advantage of better safety. The integral lifting tool comprises a lower wall support, an upper wall clamping plate and a pre-pressing mechanism, wherein the pre-pressing mechanism is connected between the upper wall clamping plate and the lower wall support, and a wall body containing space is defined by the upper wall clamping plate and the lower wall support; the pre-pressing mechanism comprises a left frame rod and a right frame rod, the left frame rod and the right frame rod are arranged in a bilateral symmetry way, wherein the upper ends of the left frame rod and the right frame rod are connected with a hanging connecting rod through rotation shafts, and the hanging connecting rod can be rotatably connected with the upper wall clamping plate; the lower ends of the left frame rod and the right frame rod are respectively and rotatably connected with the lower wall support, wherein the lower rotation connecting point positioned on the lower end is positioned outside the upper rotation connecting point positioned on the upper end; lifting points of a lifting mechanism are distributed by a lifting point distributing mechanism to sub-lifting points formed in the middle parts of the left frame rod and the right frame rod; and during lifting, the gravity of a wall body is driven by the pre-pressing mechanism, so that the upper wall clamping plate trends to move to the lower wall support to clamp the fire wall between the upper wall clamping plate and the lower wall support. The integral lifting tool has the advantages of simple and clever structure, stability and reliability.

The method comprises the following steps that S1, a ship bow is divided into an upper-layer section, a middle-layer section and a lower-layer section, the upper-layer section comprises a bow bulwark, the middle-layer section comprises the installation position of a forecastle deck and the overall anchor platform, and the lower-layer section comprises the installation position of a forecastle deck and the overall anchor platform; the lower-layer subsection comprises a main deck after the overall mounting position of the anchor platform is removed; s2, an anchor table and a chain pipe are pre-installed on the middle-layer section; and S3, combining the upper-layer section, the middle-layer section and the lower-layer section together. According to the method for pre-installing the anchor chock and the anchor chain pipe in the segmented mode, the workload of total assembling and closing in the later period is reduced, and meanwhile the completeness of segmented paint is guaranteed; the anchor table structure is high in rigidity, and the complexity of a reinforcing and shape maintaining tool is reduced; embedding and inserting are not needed during folding, the difficulty of sectional folding is reduced, the sectional precision is improved, the in-dock hoisting time is shortened, the working efficiency is improved, and technical guarantee is provided for timely undocking.

The invention discloses a novel hanging cabinet device for building construction. The device comprises a hanging cabinet, a charging bin and a door cover, wherein the charging bin with a through holefacing rightwards is arranged in the hanging cabinet, and the door cover is used for closing the charging bin; the door cover is rotatably arranged at the rear end of the right end wall of the hangingcabinet through a connecting shaft, and an adjusting structure is arranged in the door cover; the adjusting structure comprises a sliding groove which is arranged in the door cover and extends up anddown, and sliding blocks which are correspondingly arranged up and down are arranged in the sliding groove in a smooth mode; a motor is fixedly arranged at the middle point of the sliding groove, andscrew holes are formed in the sliding blocks; screw rods are arranged in the screw holes in a matching mode, one ends of the screw rods are rotationally arranged in the end walls of the sliding grooves, and the other ends are connected with the motor; and a placing cavity communicating with the sliding groove is formed in the left end of the sliding groove, and a concave cavity is formed in the left end of the placing cavity.

The invention provides blade hoisting equipment. The blade hoisting equipment is characterized in that the blade hoisting equipment comprises a hoisting beam, a lifting appliance frame and a clamping mechanism; the lifting appliance frame is combined to the hoisting beam; the clamping mechanism is installed on the lower portion of the lifting appliance frame and comprises a blade web plate clamp and a blade front edge supporting clamp which are arranged in the length direction of the lifting appliance frame at intervals, the blade web plate clamp is used for clamping the blade web plate position, and the blade front edge supporting clamp is used for supporting the blade front edge position; and the blade front edge supporting clamp comprises multiple front edge supporting units, the multiple front edge supporting units are arranged on the two sides of the lifting appliance frame in the width direction and arranged in a staggered manner in the length direction of the lifting appliance frame, each of the multiple front edge supporting units is pivotally connected to the lifting appliance frame, and each front edge supporting unit comprises a bottom supporting plate which faces upwards. According to the blade hoisting equipment, blades in the vertical posture can be clamped, universality is achieved for different blades, meanwhile, large clamping space is achieved, and the adjustable oblique insertion angle range is wide.

The invention discloses an electric single-beam crane based on the Internet of Things technology. Firstly, positioning in an X direction and a Y direction can be achieved through a grid formed by an X-direction signboard and a Y-direction signboard, scanning of a visual scanning sensor B, a visual scanning sensor C and a visual scanning sensor is assisted, secondly, a visual scanning sensor A can detect the hoisting height of a hoisted object, the visual scanning sensor B can conduct visual scanning on a portion below a single beam frame to achieve supplementation to a visual scanning sensor D, the visual scanning sensor C can scan an electric hoist area below, hoisting positioning is convenient, the visual scanning sensor D can conduct all-dimensional visual scanning on a lower hoisting area, the positions of the object and a human body can be judged easily, obstacle avoidance is achieved, the hoisting safety is improved, finally, a signal transmission module can enhance signal transmission, 5G signal butt joint with far-end control equipment in the prior art is facilitated, and monitoring and control by remote workers are facilitated.

The invention relates to an exterior window with covered corners. The exterior window comprises glass and a window frame. The edges of the glass are provided with the covered corners playing a role in protecting and supporting the surface glass of the exterior window. The covered corners are fixedly welded or glued to the window frame. The covered corners are formed by welding edgings made of stainless steel plates. One side of each edging is in a structural form of a comb. The window frame is provided with hanging seats. As the exterior window is provided with the protective covered corners, the exterior window is not prone to damage during transportation and installation, high in safe reliability, good in heat insulation effect and beneficial to energy saving and consumption reduction.

The invention provides a rotary distributor with convenient lifting transporting performance. The rotary distributor comprises a distributor main body, wherein a motor is fixedly connected to the lower side surface of the distributor main body, a lifting ring is welded and fixed to the upper portion of the distributor main body, a left fixing plate and a right fixing plate are arranged below the lifting ring, the left fixing plate is located on the left side of the right fixing plate, an inserting rod is connected to the left fixing plate in an inserted mode, the right portion of the insertingrod penetrates through a round pipe and the right fixing plate and is connected with a first nut through threads, and the round pipe is located between the left fixing plate and the right fixing plate. Compared with the prior art, the rotary distributor has the following beneficial effects that a rope and a lifting hook penetrate through the inserting rod and is hooked on the lifting ring, the joint stress is achieved through the lifting ring, the left fixing plate and the right fixing plate, the stress area is enlarged, the single stress of the lifting ring is avoided, and therefore the lifting stability and safety of the rotary distributor are improved.