152results about How to "Stable hoisting" patented technology

The laminated slab construction hoisting device comprises a hoisting frame, the hoisting frame comprises two longitudinal beams arranged in parallel and two transverse beams arranged in parallel, and the two transverse beams are fixed between the two longitudinal beams to form a rectangular frame matched with a laminated slab unit in size; a lifting device and a positioning device are installed on the lifting frame, the lifting device is installed on the opposite sides of the two longitudinal beams, the lifting device comprises a winding assembly and lifting assemblies, the lifting assemblies are symmetrically arranged on the two sides of the winding assembly, the winding assembly is provided with two output ends, and the two output ends are connected with the positioning device. The lifting assemblies on the two sides are driven by the output ends of the two sides of the winding assembly correspondingly, the positioning device is used for positioning the position of the laminated slab, the laminated slab is kept stable in the lifting process, collision and damage caused by shaking are avoided, and the working efficiency is improved. And through stable hoisting and accurate positioning, the risks of shaking and collision of the laminated slab in the hoisting and mounting process are reduced, and the operation safety is improved.

The telescopic bottom support assembly comprises a bottom plate, fixed beams are fixedly installed on the two sides of the bottom plate, telescopic sleeves are installed at the two ends of each fixed beam, and telescopic blocks are inserted into the telescopic sleeves in a penetrating mode; the two ends of the first movable beam and the two ends of the second movable beam are fixed to the telescopic sleeves on the same sides of the two fixed beams respectively. The bottom support assembly is used for being installed at the bottom of the elevator standard knot, the bottom end of the standard knot can be fixed to the bottom plate, the standard knot is matched with the bottom support assembly in a rolling mode through the rolling support, and the running safety of the cage is improved.

A construction hoisting device and hoisting method for a composite plate, comprising a hoisting frame, the hoisting frame comprising two longitudinal beams arranged parallel to each other and two transverse beams arranged parallel to each other, the two transverse beams are respectively fixed between the two longitudinal beams to form a rectangular frame matching the size of the composite plate unit, a hoisting device and a positioning device are installed on the hoisting frame, the hoisting device is installed on the opposite side of the two longitudinal beams, the hoisting device comprises a winding assembly and a lifting assembly, the lifting assemblies are symmetrically arranged on both sides of the winding assembly, the winding assembly is provided with two output ends, the lifting assemblies on both sides are respectively driven by the output ends on both sides of the winding assembly, and the positioning device is used to position the composite plate. The present invention enables the composite plate to remain stable during the hoisting process, avoids collision and damage caused by shaking, and the stable hoisting and precise positioning reduce the shaking and collision risks of the composite plate during the hoisting and installation process, thereby improving the safety of the operation.

The invention relates to butterfly plate processing, and discloses a heat treatment device and a heat treatment process for preventing deformation of a large butterfly plate, the heat treatment device comprises a bottom plate, the top of the bottom plate is fixedly connected with a stand column, the top of the stand column is provided with a rotating column, the top of the rotating column is fixedly connected with a top plate, and the top plate is provided with a hoisting mechanism. An electric push rod, an upper baffle and a lower baffle are arranged to drive a clamping block to move up and down, so that a connecting rope can be straightened conveniently, a butterfly plate is more stable during hoisting, the connecting rope can be clamped through an inserting groove, an L-shaped rod, a spring and a hemisphere, the hoisting stability of the butterfly plate is further improved, and the hoisting efficiency of the butterfly plate is improved. And shaking of the butterfly plate in the quenching process is reduced, so that the butterfly plate is quenched more uniformly, the probability of deformation of the butterfly plate in the quenching process is reduced, and the butterfly plate is quenched more stably.

The invention discloses an aero-engine rotor hoisting device and hoisting method, and belongs to the technical field of aero-engine assembly.The aero-engine rotor hoisting device comprises clamping jaws, a limiting ring, a mounting plate, a cover plate, a lifting bolt and a hanging assembly; the mounting plate is used for movably sleeving the outer ring of the limiting ring and pressing and limiting the clamping jaw on the outer side of the limiting ring, the locking piece sequentially penetrates through the mounting plate and the cover plate to connect and fasten the mounting plate and the cover plate, and then the top of the clamping jaw is pressed and limited between the mounting plate and the cover plate; a plurality of hoisting screw holes are formed in the mounting plate in an annular array mode, and the hanging assembly is used for being connected with a crane. The problem that the turbine rotor assembly is difficult to hoist in the unit body assembling process can be solved, meanwhile, the rotor assembly can be prevented from falling in the hoisting process, and the assembling efficiency of the turbine rotor assembly in the unit body assembling process is improved.

The utility model relates to a universal lifting appliance for steel shell tower sections, which comprises a frame, main balance beams, auxiliary balance beams and a lifting assembly, at least one main balance beam is welded inside the frame, a plurality of auxiliary balance beams are further welded between the main balance beams and the frame, and the lifting assembly is connected with the main balance beams and the auxiliary balance beams. A plurality of crane lifting lugs used for being connected with a crane in a hanging mode are evenly welded to the upper end face of the frame. And a plurality of hoisting assemblies are uniformly welded on the lower end surface of the frame. The steel shell tower crane has the advantages that the four crane lifting lugs and the four lifting assemblies are arranged, the four-point lifting design enables lifting stress to be plumb to the ground as much as possible, horizontal deformation of the upper end of a steel shell tower is reduced, and manufacturing precision is improved; 2, a *-shaped structure is adopted and is consistent with a steel shell tower shell, and auxiliary balance beams are mounted on diagonal lines to support horizontal stress and the like;

The invention provides an integral lifting appliance for polygonal variable cross-section inclined tower column reinforcing steel bar components, which comprises symmetrically arranged main lifting beams and adjustable lifting frame frames, the adjustable lifting frame frames are movably connected with the main lifting beams, the main lifting beams are provided with first regulators, the adjustable lifting frame frames are slidably mounted on first regulators, and the first regulators are movably connected with the adjustable lifting frame frames. A plurality of movable hanging rods are further movably arranged on the main hanging beam, the movable hanging rods are connected with the main hanging beam through second adjusting pieces, the ends, away from the main hanging beam, of the movable hanging rods are connected with the steel bar component through steel wire ropes and turnbuckles, and a frame beam is further arranged on the main hanging beam; the frame beam is arranged along the outer periphery and the inner periphery of the reinforcing steel bar component, the first adjusting piece and the second adjusting piece are connected with the frame beam, the position of the lifting appliance can be conveniently adjusted according to the gravity center of the reinforcing steel bar component, and therefore the lifting stability of the lifting appliance is improved.

The invention discloses a positioning device and method for corrugated steel web installation, and the positioning device comprises an angle adjusting assembly, a width adjusting assembly, a spacing adjusting and fixing assembly, a corrugated steel web concave part fixing assembly, a corrugated steel web side face fixing assembly and a supporting plate. Two first hydraulic rods are fixedly connected to the upper side of the supporting plate, first connecting plates are hinged to the two sides of the upper ends of telescopic shafts of the two first hydraulic rods correspondingly, the other ends of the first connecting plates are hinged to the middle of second connecting plates, and the two sides of the supporting plate are hinged to one ends of the second connecting plates correspondingly. The ends of the two second connecting plates on the same side are fixedly connected with transverse plates correspondingly, and the width adjusting assembly comprises two pairs of second hydraulic rods. The positions of the first electromagnet, the second electromagnet and the third electromagnet can be adjusted according to corrugated steel webs of different specifications, the corrugated steel webs are magnetically adsorbed and fixed, and the mounting angle and width of the two corrugated steel webs can also be adjusted.

The utility model relates to a kind of heavy-duty gantry hoisting device, including support frame type base frame, the transverse outrigger being set on support frame type base frame top, first sliding track is set on transverse outrigger top, power component is set on support frame type base frame, and the power component drives moving frame to slide in first sliding track, fixed frame is set on moving frame, through-hole is opened in the middle position of fixed frame, two square vertical guide rails are located in through-hole, the top of two square vertical guide rails is connected by fixed plate, one end of transmission chain is connected with first fixed plate, the other end is connected with second fixed plate, second fixed plate is set at the bottom of two square vertical guide rails, second fixed plate is connected with inner support mechanism, second power device motor is set on the left side of through-hole and fixed on fixed frame, and second power device motor is connected with transmission chain transmission by sprocket set, the utility model can realize without artificial binding, hoisting is stable, and the quality of product is improved.

The invention relates to a hoisting mechanism for a special-shaped large-section steel box girder and an operation method of the hoisting mechanism, and effectively solves the problems that the special-shaped large-section steel box girder cannot be stably hoisted and kept horizontal conveniently by an existing steel box girder hoisting mechanism and cannot be stably hoisted and the hoisting firmness cannot be ensured. According to the technical scheme, the hoisting mechanism for the special-shaped large-section steel box girder is provided with a bevel gear transmission assembly, a driving assembly, an adjustable rotating rod mechanism and a secondary adjusting mechanism, the driving assembly drives the adjustable rotating rod mechanism to rotate through the bevel gear transmission assembly, and the height of main hoisting ropes on the two sides can be adjusted; therefore, the horizontal state of the special-shaped steel box girder can be preliminarily adjusted through the main lifting rope, then the lifting height of the corresponding auxiliary lifting rope is adjusted through the secondary adjusting mechanism, the horizontal state of the special-shaped steel box girder is adjusted more accurately, the special-shaped steel box girder can be kept in the horizontal state, stable lifting is facilitated, and the special-shaped steel box girder can accurately correspond to a mounting part; the hoisting progress is accelerated.

The present invention discloses an electric lifting and unloading device for containers, which relates to the technical field of container lifting. The unloading device comprises a vehicle carrier and a gantry lifting frame. The gantry lifting frame is installed on the vehicle carrier through a hydraulic system. A chassis is arranged above the gantry lifting frame, and a power assembly is arranged inside the chassis. Four upper slings and several lower slings are connected to the power assembly. A boom mounting platform is connected to the gantry lifting frame through several upper slings below. Telescopic arms are arranged on both sides of the boom mounting platform. A pair of guides are symmetrically arranged below each of the telescopic arms. Two lower slings are connected to each of the guides. The magnetic wheels use magnetic attraction to make the guides move in close contact with the edge of the container, effectively preventing the guides from shaking during the descent, so that the unloading device can be operated on a shaking platform.

The utility model relates to a beam type lifting appliance for lifting a prefabricated square block, which belongs to the technical field of lifting belt type lifting appliances and comprises a beam frame, a lifting belt and a lifting lug, wherein the beam frame is detachably connected with a lifting hook of the hoisting equipment, the beam frame comprises main beams and a secondary beam, and the secondary beam is vertically mounted between the two main beams; the hanging belts are hung below the main beams and used for being connected with the prefabricated square blocks; the two ends of the lower portion of each main beam are each provided with at least two pairs of lifting lugs, the lifting lugs located at one pair of diagonal positions of the main beams are provided with transverse rods, and the lifting lugs located at the other pair of diagonal positions of the main beams are provided with hydraulic pin shafts. The cross rod and the hydraulic pin shaft are both used for hanging a sling, and the hydraulic pin shaft is further used for being separated from the sling. According to the beam type lifting appliance for lifting the prefabricated square block, the hydraulic pin shafts are arranged at the diagonal positions, so that automatic unhooking can be realized at limited cost; at least two sets of lifting lugs can improve the adaptability of the lifting appliance to prefabricated square blocks with different sizes.

The utility model relates to power equipment hoisting technical field, specifically is a kind of power equipment hoisting balancing device, comprising: main hoisting beam;Hoist platform, hoist platform is set in the lower of main hoisting beam;Multiple lifting lugs, multiple lifting lugs are respectively fixedly connected in the lower end of main hoisting beam and the upper end of hoist platform;Multiple steel wire ropes, clamping mechanism, the device is by motor, two-way threaded rod, slider and C type clamping plate and is composed of automatic clamping mechanism, by starting motor can drive two C type clamping plates synchronous and move towards each other, quickly, firmly and from both sides clamping power equipment placed on hoist platform, and cooperate with antiskid pad to increase friction, effectively prevent equipment from happening transverse displacement or slip in hoisting process, this automatic clamping mode not only reduces the labor intensity of worker, simplifies operation process, and clamping force is evenly reliable, greatly reduce the security risk caused by equipment loosening, ensure the smooth progress of hoisting process.

This utility model relates to the field of hoisting device technology, specifically to a wire rope hoisting adjustment mechanism and a pulley hoisting device, including a frame, mounting bases, and an adjustment device. Two mounting bases are provided, each movably mounted on the frame. Each mounting base has a first support and a second support below it. The first support is fixedly connected to the mounting base, and a first pulley and a second pulley are rotatably mounted on the first and second supports respectively. The first and second pulleys are connected by a wire rope, and a hook is provided on the second support. The adjustment device is mounted on the frame and is used to drive the two mounting bases to move in opposite directions at the same speed. This utility model achieves flexible adjustment of the hoisting position and maintains hoisting balance, solving the technical problems of inconvenient adjustment and difficulty in simultaneously adjusting the positions of two hoisting points in traditional hoisting mechanisms, leading to easy tilting and poor stability of the hoisted object.

An intelligent screen hoisting tool comprises a frame body, a height adjusting assembly, a guiding assembly, a width adjusting assembly and two connecting pieces. The height adjusting assembly and the guiding assembly are both installed on the frame body. The width adjusting assembly is connected with the height adjusting assembly and the guide assembly; one end of the connecting piece is connected with the width adjusting assembly; due to the fact that the distance between the two connecting pieces can be adjusted through the width adjusting assembly, intelligent screens of various sizes can be connected, due to the fact that the two connecting pieces are oppositely arranged, the intelligent screens are evenly stressed and cannot be inclined after being hoisted, and the safety of the intelligent screens is improved. Due to the fact that the distance between the connecting piece and the width adjusting assembly is fixed and the length of the connecting piece is obviously short, the intelligent screen is more stable in the moving process and not prone to shaking, the risk that the intelligent screen falls off and is collided and damaged is greatly reduced, and positioning is convenient during installation; in general, by means of the intelligent screen hoisting tool, intelligent screens of various sizes can be hoisted, and the hoisting process is more stable.

The utility model relates to the technical field of casting machines, in particular to a casting machine with an embossing roller convenient to replace, the casting machine comprises a casting machine body, an embossing roller body and a hoisting mechanism, a mounting frame is fixed on the casting machine body, rotating shafts are fixed at two ends of the embossing roller body, an arc-shaped opening is formed in the mounting frame, and the embossing roller body is arranged in the arc-shaped opening. The rotating shaft penetrates through the arc-shaped opening and is rotationally connected with the mounting frame, a clamping groove is formed in the end of the rotating shaft, a driving motor is arranged on the mounting frame in a sliding mode, a clamping block is fixed to an output shaft of the driving motor and matched with the clamping groove in a clamping mode, and the hoisting mechanism is mounted above the rotating shaft. And the hoisting mechanism is used for hoisting the embossing roller body. The embossing roller replacement device has the beneficial effect that the convenience and safety of embossing roller replacement are improved.

The utility model discloses a PC component stable hoisting device which comprises a bottom plate, two first vertical plates are fixedly connected to the top of the bottom plate, an adjusting assembly is arranged between the two first vertical plates, a hoisting ring is fixedly connected to the top of the bottom plate, a displacement groove is formed in the surface of the bottom plate in a penetrating mode, and a displacement block is slidably connected to the interior of the displacement groove. A fixing block is fixedly connected to the bottom of the displacement block, a through groove is formed in the side face of the fixing block in a penetrating mode, and a clamping assembly is arranged in the through groove. The lifting device solves the problems that the distance between two clamping assemblies of a traditional lifting device is generally fixed, so that when components with different lengths are lifted, the clamping assemblies with the fixed distance can not adapt to the components with different lengths, the components can not be stably clamped, and the lifting efficiency is high. The problem that the production cost and the production time are greatly increased due to the fact that the lifting devices of different models need to be replaced for working due to the fact that the lifting devices of different models are easy to slip off or incline in the prior art is solved.

The utility model belongs to the technical field of cabinet equipment, and particularly relates to a case and cabinet hoisting mechanism which comprises a cabinet body and a hoisting bottom plate, the hoisting bottom plate is fixedly arranged at the lower end of the cabinet body, and the front end and the rear end of the interior of the hoisting bottom plate are each provided with a containing groove in a sliding mode. The hoisting mechanisms such as the protective net, the lantern rings and the hoisting rods are arranged in the hoisting bottom plate, so that the hoisting mechanisms can be pulled out from the hoisting bottom plate when hoisting is needed, and can be stored in the hoisting bottom plate when not needed, and the stacking problem during transportation of a plurality of cabinet bodies cannot be influenced; and during hoisting, the protective nets can be protected at the two ends of the cabinet body, even if a large number of electrical components are installed in the cabinet body, the hoisting bottom plate can be used for directly bearing, the cabinet body cannot be damaged, the protective nets are protected at the two ends, the cabinet body cannot incline in the hoisting process, and the hoisting process is more stable.

The utility model relates to the field of hoisting equipment, in particular to a carrying truss for planet wheel phased array detection, which comprises two truss bodies, a moving frame is arranged between the two truss bodies, a winch is mounted on the moving frame, and a driving part is mounted at the bottom end of a steel wire rope or a chain of the winch. And clamping plates are arranged at the left end and the right end of the driving part correspondingly, and the driving part is used for driving the two clamping plates to slide in the direction close to or away from each other. The purpose of the utility model is to effectively improve the workpiece hoisting convenience of the hoisting equipment, so that the workpiece transportation efficiency of the carrying truss can be improved.

The invention is applicable to the technical field of lifting equipment, and provides lifting equipment for bridge safety construction, which comprises a top plate, a connecting frame is arranged on the top plate, the lifting equipment further comprises a mounting module, the mounting module comprises a mounting frame, two sliding seats are symmetrically arranged on the mounting frame, and the bottom of each sliding seat is connected with a stand column; the positioning module comprises a mounting plate, a supporting plate is arranged at the bottom of the mounting plate, a clamping unit is further arranged on the stand column, the supporting plate comprises a main supporting plate body and an overturning supporting plate body, two connecting insertion rods are symmetrically arranged on the two sides of the main supporting plate body, and side clamping plates are mounted on the mounting plate body; and telescopic connecting rods are arranged at the bottoms of the side clamping plates. According to the device, the prefabricated part can be rapidly fixed through the self weight of the prefabricated part, the hoisting process is stable, flexible adjustment can be conducted according to the size of the prefabricated part, operation is easy, the application range is wide, and the working efficiency is high.

The utility model provides a hoisting device for cement concrete prefabricated part production. The hoisting device comprises a side plate, a first hoisting assembly and a second hoisting assembly, the two side plates are arranged on the two sides of the first hoisting assembly and the second hoisting assembly, and the two ends of the first hoisting assembly and the two ends of the second hoisting assembly are slidably arranged on the side plates. A power source assembly is arranged on the side plate and can drive the first hoisting assembly and the second hoisting assembly to move. The lifting device has the advantages that the lifting device can be suitable for cement concrete prefabricated parts with different widths and lengths, the lifting device does not need to be replaced and adjusted, the lifting device can be suitable for the cement concrete prefabricated parts with different sizes, the lifting efficiency is greatly improved, and stability is good.

The utility model discloses a mould convenient to hoist, which comprises a mould body, a template main body is arranged on one side of the mould body, a transverse fixing device is arranged at the top of the mould body and the template main body and is used for fixing the mould body and the template main body, a vertical fixing device is arranged at the bottom of the transverse fixing device, and the vertical fixing device is used for fixing the mould body and the template main body. The clamping device is used for clamping the die body and the template main body; according to the device, multiple sets of molds between the first mold plate and the mold body are fixed through existing bolts, then the connecting folded plates are fixed through connecting bolts, the connecting folded plates are connected with first screw holes through first rotary knobs, and then second rotary knobs are rotated to drive double-end threaded rods to rotate; the clamping plate is used for clamping one side of the die body and one side of the template main body, then the hook or the connecting rope is placed in the connecting hole, then the rotary knob III is rotated to fix the pipe ditch or the rope, and by means of the structure, the effect that hoisting can be more stable when the die set is a plurality of sets of dies is achieved.

The utility model discloses a magnetic pole iron core section hoisting device which comprises a bottom plate, two clamping blocks, a transmission structure, a steel pipe and a hoisting block, the bottom plate, the clamping block and the transmission structure are all arranged in the steel pipe. The lifting block is fixedly connected to the end, opposite to the bottom plate, of the steel pipe. The clamping block is arranged between the bottom plate and the transmission structure, and the transmission structure and the bottom plate are rotationally connected through the clamping block; the clamping block comprises a sliding part and a convex column, the sliding part is connected with the bottom plate, and the convex column is connected with the transmission structure; the transmission structure comprises a conversion block, a transmission rod and a rotating rod; the rotating rod is connected with the transmission rod, the conversion block is fixedly connected to one end of the transmission rod, and two arc-shaped sliding grooves distributed in a central symmetry mode are formed in the other side, opposite to the side connected with the transmission rod, of the conversion block. The lifting appliance is exquisite in design and easy to operate, the clamping blocks stretch out and draw back through rotation of the transmission structure, the lifting appliance can be rapidly assembled and disassembled in a small hole, and stable lifting of a workpiece is guaranteed.

The utility model discloses a building assembly type stair which comprises a prefabricated stair body, a lower step platform, an upper step platform, reserved mounting holes, anti-skid lines, embedded columns, supporting cross beams, mounting screw holes and hoisting rings, the lower step platform is integrally formed below the prefabricated stair body, and the upper step platform is integrally formed above the prefabricated stair body. Reserved mounting holes are formed in the two sides of the lower step platform and the two sides of the upper step platform correspondingly, anti-skid lines are formed in steps on the top of the prefabricated stair body correspondingly, embedded columns are installed on the left sides and the right sides in the steps above and below the prefabricated stair body correspondingly, supporting cross beams are installed at the bottoms of the embedded columns, and the embedded columns on the left sides and the right sides are connected through the supporting cross beams. Mounting screw holes are formed in the embedded columns, and hoisting rings are in threaded connection with the interiors of the mounting screw holes. The lifting device is reasonable in design and convenient to install, the lifting ring is connected with the bottom cross beam, stable lifting is ensured, and the upper and lower stepping platforms are connected and installed through the pre-prefabricated screws stably and reliably.

The utility model relates to a lifting tool for a vehicle power battery. The lifting tool comprises a lifting lug assembly, a lifting belt and a battery lifting appliance assembly, the middle parts of the lifting belts penetrate through the lifting lug assembly, and battery lifting appliance assemblies are respectively arranged at the two ends of the lifting belts; the lifting lug assembly, the lifting belt and the battery lifting appliance assembly are used in cooperation with the power battery, the power battery can be stably lifted, manpower is replaced for assisting in moving the power battery, labor intensity is lowered, and assembling efficiency is high.

The utility model discloses a simple lifting appliance for building construction, and belongs to the technical field of lifting devices. The lifting appliance comprises a front supporting leg and a rear supporting leg which are oppositely arranged, and the tops of the front supporting leg and the rear supporting leg are detachably connected through a first cross rod; a mounting frame with a winch is mounted on the first cross rod, the end, away from the rear supporting leg, of the first cross rod is coaxially connected with a telescopic second cross rod, and the second cross rod is sleeved with a U-shaped frame with a pulley. The front supporting leg adopts two stand columns, a guide rod is arranged between the stand columns to guide a steel rope path, and a triangular reinforcing structure is formed by an inclined rod and a supporting rod; the guide rod cooperates with the first falling protector and the second falling protector, the steel rope is driven by the winch to slide along the guide rod, abnormity is monitored in real time through the falling protectors, and the steel rope is prevented from being out of control and falling. Through modular design, multiple safety protection and an adjustable structure, the problems of high equipment cost, complex disassembly and assembly and poor stability in material transportation of low floors are solved, and the device has the advantages of being rapid in deployment, stable in bearing, safe, reliable and the like.

The utility model discloses a heat treatment hanger for a box pit furnace, which belongs to the technical field of metal heat treatment and comprises a supporting rod, a bearing rod, a bearing frame and a fixing plate assembly. The fixing plate assembly is installed at a through hole of a box type workpiece, and the through hole is divided into two fan-shaped through holes. The bottom of the fixing plate assembly is fixedly connected with a fixing ring. The bearing frame is of a U-shaped structure; a bearing ring is processed on the middle part of the U-shaped structure along the thickness direction of the U-shaped structure; a mounting ring is processed on each of two side plates of the U-shaped structure; the two side plates of the U-shaped structure are respectively inserted into the two fan-shaped through holes; the bearing rod is sequentially inserted and mounted in the mounting ring, the fixing ring and the other mounting ring; the supporting rod penetrates through and is installed in the bearing ring. According to the utility model, the problems of low efficiency caused by tedious operation in the process of hoisting large box type workpieces into a furnace and hanging heat treatment in the furnace and potential safety hazards caused by failure of a welding area can be solved, so that the rapid, convenient and safe production of the box type workpieces is ensured.

The utility model provides a saw blade lifting appliance which comprises a lifting frame body, a lifting ring and at least two lifting arms, the lifting ring is arranged on the lifting frame body, the two lifting arms are both hinged to the lifting frame body, the lifting arms are arranged in the length direction of the lifting frame body around the hinged axis in a swinging mode, and the two lifting arms are oppositely arranged on the two sides of the lifting ring. Hanging structures are arranged at the ends, away from the hanger body, of the suspension arms. According to the application, two hanging holes spaced on the saw blade are hung through two suspension arms, so that the saw blade is provided with a hanging hole between the two suspension arms, after the saw blade is hung away from the ground, the hanging hole is located at the uppermost part of the saw blade, the gravity center of the saw blade is located on the plumb line of the hanging hole, and the saw blade is hung on a saw blade standing frame through the hanging hole, so that the saw blade can stand on the saw blade standing frame. And when the saw blade is transferred from the saw blade lifting appliance to the saw blade standing frame, the gravity center position of the saw blade is not changed, so that the saw blade does not shake, and the transferring stability is improved.

The invention discloses a hoisting tower crane capable of preventing materials from falling off for engineering construction, and relates to the technical field of tower cranes, the hoisting tower crane comprises a supporting tower, a hoisting mechanism and a hook assembly, the hoisting mechanism comprises a moving trolley, a winding roller is rotatably mounted on the side of the top of the moving trolley through a supporting leg, and a servo motor is fixedly mounted on the side of the outer side of the supporting leg; a steel wire rope is wound in the middle of the winding roller, a crescent block is fixedly installed at the edge of the outer side of the winding roller, a pressing assembly is installed at the position, close to the winding roller, of the outer side of the moving trolley, the hook assembly comprises a connecting wheel, a lifting hook is fixedly installed at the bottom end of the connecting wheel, and a support is hinged to the middle of the outer side of the lifting hook; arc-shaped teeth are fixedly installed in the middle of the top of the support, and a clamping cap is fixedly installed at the bottom end of the support through a U-shaped rod. According to the tower crane capable of preventing the materials from falling off for engineering construction, the anti-falling effect is achieved, the materials are stably lifted, the materials are prevented from falling off, and lifting is safe and reliable.

The invention discloses an assembly type interlayer aluminum plate line system which comprises a line body, the line body is connected with a curtain wall through a connecting assembly, the curtain wall comprises a vertical keel, a transverse keel and a panel structure, and the vertical keel is fixed to a floor main body structure through channel steel. The connecting structure is characterized in that the connecting assembly comprises a bent steel plate piece and a steel hanging piece, the bent steel plate piece comprises a U-shaped end fixed to the channel steel and a T-shaped end connected with the steel hanging piece, one end of the steel hanging piece is provided with a clamping hook matched with the T-shaped end in a clamping and inserting mode, and the other end of the steel hanging piece is fixed to the line body. According to the invention, the hanging part of the molding body is directly connected with the channel steel through the connecting assembly, so that the mounting structure is simplified, the pressure of the vertical keel is released, the stability of the molding body is improved, and the mounting requirement of the large decorative molding is met.