39results about How to "Reliable hoisting" patented technology

The invention provides an adjustable offshore large wind power blade lifting appliance and a lifting method thereof, and relates to the blade lifting appliance and the lifting method of an offshore large wind power generator set. According to the lifting method, the adjustable offshore large wind power blade lifting appliance is adopted, and the lifting appliance comprises a platform, a blade rootend clamp, a blade tip end clamp, a balance weight and a swing arm, wherein the swing arm is hinged to the upper surface of the platform, the lower clamping head I is carried out horizontal positioning control by utilizing the positioning hydraulic cylinder I of the lifting appliance, the lower clamping head II is carried out horizontal positioning control by utilizing the positioning hydraulic cylinder II, the upper clamping head I and the upper clamping head II is carried out fall control by utilizing the clamping hydraulic cylinder I and clamping hydraulic cylinder II respectively, the hydraulic cylinder is adjusted and the hydraulic cylinder can be used for performing lead hammer intersection angle control on blades installed in front of the impeller, and adjusting requirements of mounting angles of blades can be met; except rubber block I and rubber block II, other parts of the lifting appliance are not in make contact with the blades in the whole lifting process, and the clamping force can also be controlled by clamping hydraulic cylinder I and clamping hydraulic cylinder II, the surfaces of the blades cannot be damaged, and reliable lifting is carried out on the offshore large wind power blade.

The invention discloses a method for hoisting a rolling mill housing, which comprises the following steps: 1), before the rolling mill housing is hoisted, a housing support frame is fixed on a roll change carriage rail of a rolling mill; a stop block is arranged at the end, far away from the bottom plate of the rolling mill, of the roll change carriage rail; an inclined support panel is arranged on the housing support frame; sleepers are mounted on the bottom plate of the rolling mill; and the rolling mill housing in an inclined state is hoisted to the roll change carriage rail of the rolling mill in such a manner that the central line of the rolling mill housing is superposed on that of the rolling mill, the bottom of the rolling mill housing falls on the sleepers, and the upper part of the rolling mill housing falls on the inclined support panel; and 2), a sling is arranged at the upper end of the rolling mill housing; and the rolling mill housing is hoisted to be vertical and then hoisted to a preset position on the bottom plate of the rolling mill horizontally through a crane, and falls on the bottom plate of the rolling mill, so as to hoist the mill housing in place. According to the invention, the problem that the hoisting of the main hook of a crown block equipped in a construction site is insufficient can be solved, so as to ensure safe, smooth and reliable hoisting.

The invention relates to a structure and a method for integrally a breaking pile head of a pile foundation. The structure comprises the pile foundation, and main ribs of a reinforcement cage and sounding pipes, which are positioned in the pile foundation; main rib sleeves sleeve sections, higher than the top surface of a design pipe body, of the main ribs of the reinforcement cage; a gap is formed between the outer diameter of each main rib and the inner diameter of the corresponding main rib sleeve; a sounding sleeve is arranged on each sounding pipe in a sleeving manner; a separating pipe is arranged at the position of a pile head cutting line by encircling the main ribs of the reinforcement cage; the separating pipe comprises a flexible outer pipe and inner ribs inserted in an inner hole of the flexible outer pipe; after the pile foundation is cast, the inner ribs are pulled out of the separating pipe, separating holes are forming by drilling, separating wedges are inserted into the separating holes, and the pile foundation is knocked to enable the pile head and the top surface of the design pipe body to be separated. The structure and the method have the beneficial effects that the positions of the sounding pipes and the main ribs of the reinforcement cage in the pile foundation are not required to be searched any more, the main ribs are prevented from being damaged in the breaking construction; the pile head after breaking is flat in structure.

The invention discloses a spreader having an adjustable balanced beam, comprising a beam; a lower end of the beam is provided with a plurality of positioning troughs; the beam is connected with a balancing seat which is provided with a rolling mechanism in contact with the beam and a positioning shaft matching with the positioning troughs respectively. The balancing seat consist of a front and a back board which are arranged at the front and back ends of the beam; the positioning shaft passes through the front and back boards of the balancing seat; one end of the positioning shaft is provided with a handle, and the other end is provided with a fixed pin; the middle part of the positioning shaft is provided with a flute; the front board of the balancing seat is provided with a left and a right handle stop block. The rolling mechanism comprises a connecting shaft which connects the front and back boards of the balancing seat and a roller equipped on the connecting shaft. As the beam of the spreader provided by the invention is provided with the balancing seat which can move along the beam, heavy objects can be lifted easily, rapidly, safely and reliably by adjusting the position relationship between the balancing seat and the beam according to the gravity offset of the lifted heavy object.

The invention discloses a demolition construction method for an overpass existing line arch bridge. The demolition construction method comprises the steps: 1, erecting a protective shed frame; 2, carrying out static crushing demolition on the arch blasting demolition structure; 3, manually removing the blasting protection layer; 4, cutting the removed arch ring; 5, hoisting the arch ring to be hoisted; and 6, dismantling the under-arch structure. The method is simple, reasonable in design, easy and convenient to construct and good in using effect; the protection shed frames fixed to the frontside and the rear side of the removed arch bridge are adopted for effective protection, meanwhile, the structure on the arch of the removed arch bridge is removed in the mode that static crushing andmanual chiseling are combined, it is guaranteed that a plain concrete arch ring cannot be damaged in the static crushing process, and an existing spanned railway line cannot be disturbed. After the arch ring is exposed, the removed arch ring is cut and decomposed through a rope saw and then hoisted and removed, then the under-arch structures on the left side and the right side are rapidly removed,the construction period can be effectively shortened, the arch bridge removing efficiency is improved, and the removing process is safe and reliable.

The invention discloses a chain and an anti-loosening structure of a lamp. The chain comprises a plurality of tandem chain sheets; each chain sheet is formed by folding a metal sheet, the two ends of which are provided with through holes; and the adjacent chain sheets are connected in series together in a mode that the rear chain sheet passes through the corresponding two through holes after the front chain sheet is folded. When the chain with the structure is hoisted, the stressed part between the chain sheets is a bending part of the chain sheets serving as a whole; the bearing capacity of the chain is only related with the material strength and the thickness of the chain sheets; on the premise that the material strength and the thickness meet the requirements, because a notch or a welding point on a common chain does not exist, the chain does not break even in gravity or instantaneous impact, so the chain is more reliable and convenient to use; meanwhile, the chain is more convenient to assemble and disassemble in an active buckling mode of assembly by means of bending of the chain sheets; and when the chain structure is applied to the anti-loosening structure of the lamp, the lamp is firmer and more reliable to hoist.

The invention relates to the technical field of assembled buildings, and particularly relates to a prefabricated plate manufacturing, hoisting and secondary pouring integrated device and a construction method. The device comprises a die table, supports and brackets. The die table is provided with a plurality of positioning grooves. The corresponding bracket is placed in each positioning groove. Each bracket is detachably connected with the corresponding support. When concrete is poured on the die table and prefabricated plates are formed, the supports and the prefabricated plates are poured into a whole. When a plurality of die tables are stacked, the supports can be used for supporting the upper-layer die table. When the multiple prefabricated plates are stacked, the supports can be usedfor supporting the upper-layer prefabricated plate. When the prefabricated plates are subjected to secondary pouring, cast-in-place layer concrete, the supports and the prefabricated plates are pouredinto a whole. By means of the prefabricated plate manufacturing, hoisting and secondary pouring integrated device and the construction method, large-batch plane production or three-dimensional production of the concrete prefabricated plates can be achieved, and the safe and reliable continuous operation process of storage, transportation and hoisting is achieved.

The invention discloses a wallboard hanging frame structure, which comprises a support arm, wherein the lower end of the support arm is provided with a wheel shaft assembly; the support arm is connected with a damping board through the wheel shaft assembly; support posts are respectively arranged in positions, near the two ends, of the lower surface of the damping board; the support posts and the damping board are connected through fastening screws; I-shaped steel is respectively connected onto the inner side surfaces of the two support posts and is fixed on the support posts; counterweight boards are vertically connected with the bottoms of the I-shaped steel; the upper ends of the counterweight boards are clamped and connected onto the I-shaped steel; the lower surfaces of the counterweight boards are fixed onto a transverse frame of a curtain wallboard block; the two counterweight boards are connected through a reinforcing board; two hanging ropes are arranged on the surface of the reinforcing board; and the top ends of the hanging ropes are arranged in a way of surrounding the reinforcing board through a rotating shaft. The wallboard hanging frame structure has the advantages that the structure is simple; the operation is convenient; the convenient, effective and reliable hanging on the curtain wall board block can be realized; the connection mechanical performance is good; the board block falling phenomenon can be effectively avoided; and the board block can be protected from being damaged.

The invention discloses a self-reinforcement clamp type lifting appliance. The self-reinforcement clamp type lifting appliance comprises two clamp arms, the two clamp arms are longitudinally arranged,and are hinged through a middle shaft, each clamp arm is divided into a handle end and a pressing end through the middle shaft, a wall plate is clamped to the pressing ends, a process hole is formedin the face of the wall plate, pressing discs are arranged at the two ends of the process hole, the pressing discs are hinged to the clamp arms, limiting holes are formed in the ends, making contact with the wall plate, of the pressing discs, and are horizontally arranged, a lifting shaft is inserted between the limiting holes, and the lifting shaft penetrates the process hole. The handle ends areprovided with two lifting cables, the two lifting cables are connected with the clamp arms, and the two lifting cables are jointly connected with a lifting ring. The technical problem about lifting and splicing of heat preservation light wall plates in assembly type buildings can be effectively solved, the structure is simple, and operation is easy.

The invention discloses a lifting-type multifunctional stretcher bed for underground rescue. The lifting-type multifunctional stretcher bed for the underground rescue comprises a hollow stretcher body; a bed body is arranged above the stretcher body; a bed body hanging rod is arranged at each of the left end and the right end of the bed body; a stretcher hanging arm is arranged at each of the left end and the right end of the stretcher body; a hanging arm connecting piece is arranged at the top end of each stretcher hanging arm; a vertical hanging rod is arranged right above each stretcher hanging arm; the bottom end of each vertical hanging rod is fixedly connected with the top end of the corresponding stretcher hanging arm through the corresponding hanging arm connecting piece; a transverse hanging rod is arranged above the vertical hanging rods; the top ends of the vertical hanging rods are fixedly connected with the left end and the right end of the transverse hanging rod; the top end of each bed body hanging rod is fixedly connected with the transverse hanging rod; a lifting sleeve is also arranged on the transverse hanging rod. According to the lifting-type multifunctional stretcher bed for the underground rescue, the stretcher bed is hung reliably through the lifting sleeve and the stretcher hanging arms and the bed body hanging rods which are matched with one another, and the stretcher bed can float and move in water through an inflatable airbag.

The invention discloses a spreader having an adjustable balanced beam, comprising a beam; a lower end of the beam is provided with a plurality of positioning troughs; the beam is connected with a balancing seat which is provided with a rolling mechanism in contact with the beam and a positioning shaft matching with the positioning troughs respectively. The balancing seat consist of a front and a back board which are arranged at the front and back ends of the beam; the positioning shaft passes through the front and back boards of the balancing seat; one end of the positioning shaft is providedwith a handle, and the other end is provided with a fixed pin; the middle part of the positioning shaft is provided with a flute; the front board of the balancing seat is provided with a left and a right handle stop block. The rolling mechanism comprises a connecting shaft which connects the front and back boards of the balancing seat and a roller equipped on the connecting shaft. As the beam ofthe spreader provided by the invention is provided with the balancing seat which can move along the beam, heavy objects can be lifted easily, rapidly, safely and reliably by adjusting the position relationship between the balancing seat and the beam according to the gravity offset of the lifted heavy object.

The invention discloses a C-shaped lifting appliance and an appliance for lifting a thrust wheel of an excavating machine. The C-shaped lifting appliance comprises a main lifting plate, two first limiting plates and two second limiting plates, wherein the main lifting plate is a C-shaped plate body of certain width; a groove is formed in the middle of a lower hook of the main lifting plate; the first limiting plates are respectively fixed on the inner side surface of the main lifting plate in positions on two sides of the groove, and are arranged in the width direction of the main lifting plate; the second limiting plates are respectively fixed on the outer side surface of the main lifting plate in positions on two sides of the groove; and each first limiting plate and an adjacent second limiting plate form a two-stage step. The appliance for lifting the thrust wheel of the excavating machine comprises a rigging and the C-shaped lifting appliance hung on the rigging. Due to the C-shaped lifting appliance, the thrust wheel of the excavating machine can be limited in a plurality of manners, so that the thrust wheel can be lifted reliably, and danger of slipping caused by improper lifting is avoided during the assembly of the thrust wheel.

The invention discloses track beam hoisting equipment suitable for high-speed magnetic levitation, which belongs to the technical field of high-speed magnetic levitation track construction, and can realize reliable walking on a T-shaped beam of a high-speed magnetic levitation track through corresponding arrangement of structures such as a vehicle body, a walking mechanism, a hoisting main beam, a main beam sliding plate on the hoisting main beam, an electromagnetic hoisting clamp and the like. And the reliable hoisting of the high-speed maglev track beam can be accurately realized through the reciprocating translation of the main beam sliding plate along the longitudinal direction of the hoisting main beam and the reciprocating lifting of the hoisting main beam in the vertical direction. The track beam hoisting equipment suitable for the high-speed magnetic levitation can reliably walk on a T-shaped beam, magnetic attraction hoisting of the high-speed magnetic levitation track beam is achieved after reliable walking, beam body construction in the construction environment with the limited operation space is met, the beam body construction operation process is simplified, impact damage to related walls and equipment in the hoisting process is avoided, and the hoisting efficiency is improved. And the accuracy and reliability of beam body hoisting construction are guaranteed, and good practical value and application prospects are achieved.

The invention discloses a built-in pipe mould lifting appliance for dismounting an extruding machine. The built-in pipe mould lifting appliance comprises a rigidity lifting appliance which consists of a lifting ring, angle iron and a bolt, wherein the lifting ring is fixedly arranged on an upper plate surface of the angle iron, a vertical side plate surface is preset with a through hole and process holes according to positions of screw holes in the end surface of the pipe module with different specifications, four process holes are formed in the center of the vertical side plate surface, and the bolt penetrates through the through hole formed in the vertical side plate surface of the angle iron and is connected with an inner pipe module. The built-in pipe mould lifting appliance provided by the invention has the advantages that a worker does not need to directly contact the inner pipe module, the high temperature is resisted when the inner pipe module is changed, the inner pipe module is immediately dismounted, and thus the heat loss is greatly reduced; in addition, the structure is simple, the volume is small, the requirement on the construction space is low, the practical condition on a spot is met, and the built-in pipe mould lifting appliance is beneficial to dismounting operation.

The invention relates to a lifting appliance for transferring a heavy forklift portable frame. The lifting appliance comprises a hooking assembly and a lifting chain assembly; the hooking assembly comprises a cross beam and two lifting hooks, and the lifting hooks are located at the two ends of the cross beam; lifting handle ends are arranged at the upper ends of the lifting hooks, and hook bending ends are arranged at the lower ends of the lifting hooks; the lifting handle ends of the two lifting hooks are movably connected with the cross beam through pin shafts, and the hook bending ends of the two lifting hooks are located below the cross beam; the bending direction of the hook bending ends faces the outer side of the cross beam, and the lifting hooks rotate relative to the cross beam through the pin shafts; and the lifting chain assembly comprises a main lifting ring and two lifting chains, one end of each of the two lifting chains is connected to the main lifting ring, and the other ends of the two lifting chains are connected with the lifting handle ends of the two lifting hooks. According to the lifting appliance, the work efficiency is improved, labor intensity is reduced, the lifting design in an outward expansion manner is adopted, the opening size of the two lifting hooks is large, one lifting appliance can meet the requirement for lifting the portable frame with a plurality of opening sizes, and lifting transferring safety is improved.

The invention discloses a clutch lifting device. The clutch lifting device comprises an L-shaped lifting main plate, the L-shaped lifting main plate comprises a side plate and a bottom plate, a connecting screw rod is arranged at the bottom of the side plate of the lifting main plate in a penetrating mode, the lifting main plate is connected with the connecting screw rod in a threaded mode, a circular supporting block is arranged on one side of the connecting screw rod, and the bottom of the circular supporting block makes a contact with the bottom plate of the lifting main plate; a rotating rod is arranged at the other end of the connecting screw rod; two bolts penetrate through the upper part of the side plate of the lifting main plate, connecting nuts are arranged on the bolts located on one side of the bottom plate correspondingly, sleeves sleeve the screw bolts arranged on the other side of the bottom plate, and lifting supporting blocks are arranged between the sleeves and the end surfaces of the screw bolts. According to the clutch lifting device, the lifting device is small and light, lifting is reliable, by rotating the circular supporting block, moving of a supporting point can be realized, thus the perpendicularity of the part positioning surface is adjusted during hoisting, and parts can be conveniently installed. The invention further discloses a debugging method of the clutch lifting device, operation is easy and convenient, and lifting requirements of different parts can be met.

The invention discloses a hoisting method of an offshore crane. The method comprises the following steps that three hoisting points which are not located in the same plane are randomly taken, and thegravity center of a base is solved; hoisting points of hoisting are determined; lifting lugs are connected to the lifting points; steel wire ropes of the crane are connected with the lifting lugs to realize lifting of the base; a rotating platform assembly is hoisted; three hoisting points which are not located in the same plane are randomly taken, the gravity center of the rotating platform assembly is solved, and the hoisting points for hoisting are determined; a lifting lug is connected to the lifting point of a left side connecting lug; steel wire ropes of the crane are connected with thelifting points on the lifting lug on the left side and a right side connecting lug to lift the base; a tripod is hoisted, three hoisting points which are not located in the same plane are taken randomly, and the gravity center of the tripod is obtained; hoisting points of hoisting are determined; steel wire ropes are connected with the top end hoisting point and the lower hoisting point, and the upper ends of all the steel wire ropes are gathered and connected to the crane, and the crane is used for realizing hoisting; and a crane jib is hoisted. The method has the advantages that selection ofthe hoisting points of crane components is accurate and convenient, and the stress of the components is reasonable during hoisting.

The invention relates to the field of hoisting and lifting devices for continuously lifting loads, in particular to a bolt construction equipment integrating drilling and installation and a method for using the same. A bolt construction equipment integrating drilling and installation, comprising a mobile drilling device (1), characterized in that it also includes a hoisting device (2), and the mobile drilling device (1) includes a car body (11), an engine ( 12), control room (13), wheels (14), bracket (15), hydraulic support rod (16), drag chain (17), drill bit (18) and hydraulic jacking cylinder (19); hoisting device (2) Comprising hoist (21), truss (22), fixed pulley (23) and stay cable (24). A method for using bolt construction equipment integrating drilling and installation is characterized in that: a. Parking; b. Drilling; c. Vertical bar. The invention has the advantages of simple structure, convenient use, reliable hoisting and cost saving.

The large-diameter pipe joint hoisting clamp comprises an equal-thickness clamp body made of steel plates, the clamp body is integrally in a U shape, the clamp body comprises a bottom plate, a hoisting plate and a supporting plate which are integrally arranged, the hoisting plate and the supporting plate are perpendicularly arranged at the two ends of the bottom plate respectively, a hoisting hole is formed in the hoisting plate, and the supporting plate is provided with a clamping hole. A reinforcing plate is obliquely arranged and welded to the top end of the supporting plate, the reinforcing plate inclines towards the inner side of the supporting plate from top to bottom, and the width of the reinforcing plate is larger than the thickness of the supporting plate. And the large-diameter pipe joint is hoisted by taking the upper surface of the reinforcing plate as a supporting surface and taking the upper surface of the bottom plate as a supporting point. The fixture is simple in structure and convenient to assemble and disassemble, the large-diameter pipe joint with the wall thickness larger than or equal to 150 mm can be rapidly and reliably hoisted, the hoisting problem of the large-diameter pipe joint is effectively solved, and the on-site assembling and disassembling efficiency of the large-diameter pipe joint is improved.

The invention aims to provide a machine tool body lifting device. According to the special machine tool body lifting device, machine tool bodies with different sizes can be matched through adjustment in a certain range, the operation is rapid and convenient, and the safety is guaranteed. The aim of the invention is realized as follows: the device consists of a lever, a pin shaft, a suspension clasp, a nylon rope and an adjusting rod and is characterized in that the nylon rope is tied to the suspension clasp; the suspension clasp is connected with the lever; the adjusting rod is connected to the lower part of the lever. The adjusting rod is rotated, so that the distance between the lower ends of the lever is varied in a certain range. The machine tool body lifting device has the advantages and positive effects that the adjusting rod is adjusted and fixed, so that the machine tool body is safely and reliably lifted, and the operation is convenient.

The invention provides an adjustable offshore large-scale wind power blade hanger and a hoisting method thereof, and relates to a blade hoisting tool and a hoisting method of a large-scale offshore wind power generating set. The hoisting method of the present invention adopts an adjustable offshore large-scale wind power blade sling, which includes a platform, a blade root end clamp, a blade tip clamp, a counterweight, and a swing arm hinged on the upper surface of the platform, and uses the positioning hydraulic cylinder of the sling A pair of lower chucks 1 is used for horizontal positioning control, and positioning hydraulic cylinder 2 is used for horizontal positioning control of lower chuck 2. Clamping hydraulic cylinders 1 and 2 can be used to control the falling of upper chucks 1 and 2 respectively. Adjust the hydraulic cylinder It can control the plumb angle of the blade before it is installed with the impeller, which can meet the adjustment requirements of the blade installation angle. During the whole hoisting process, except for the rubber block 1 and the rubber block 2, other parts of the spreader are not in contact with the blade, and the clamping force can also be determined by The first and second clamping hydraulic cylinders are controlled without damaging the surface of the blade, and the large wind power blades on the sea are reliably hoisted.

The invention provides a special crane for transporting a fan blade. The special crane comprises a main structure, a cart system, a hoisting system, a hanger transverse movement system, a power station and an operation platform, wherein the main structure is in a box type beam structure; the cart system comprises an operation mechanism and a rotary mechanism and is a whole machine walking and steering system; the hoisting system is a system of hoisting a lifting hook group by a winch through a steel wire rope and a pulley wheel; the hanger transverse movement system is a system of moving a hanger trolley by a winch through a steel wire rope and a pulley wheel; the power station comprises a diesel generator and a hydraulic pump station; the operation platform is provided with a command switch for the movement operation of each mechanism and the command switch is used for controlling working states of a hoisting winch, a transverse movement winch, a hydraulic motor and a hydraulic rotary speed reducer. A hoisting method is used for transporting the fan blade by two special cranes to carry out combined operation and hoisting. The special crane for transporting the fan blade has the beneficial effects that cross hanging, in-situ any angle steering, frontward movement, and multilayered and multi-array stacking can be realized; the special crane is flexible to move, high in maneuverability and high in efficiency; the special crane is compact in structure, light in self weight, good in ground adaptability, and safe and reliable to hoist.

The invention discloses a curtain wall plate lifting device and a method. The device comprises: a hanging joint piece and a fixation piece. The hanging joint piece has an I-shaped insert strip, the groove surface of which is provided with a plurality of hanging joint rings and a plurality of II-shaped fixation seats, the fixation seats are equipped with screw holes, and two ends of the groove surface of the insert strip are respectively provided with screw holes. The fixation piece is composed of a fixation panel, and two clamp plates that are vertical to the fixation panel and are symmetrically distributed. The fixation panel and the clamp plates compose a II shape, and the fixation panel is equipped with screw holes fitting the screw holes on the fixation seats in terms of position and shape. By arranging the hanging joint piece that can be inserted into the groove of a curtain wall plate top profile and is in reliable connection with the profile, and arranging the fixation piece that is stuck at the outside of the curtain wall plate top profile and is in reliable connection with the hanging joint piece, the embodiment of the invention can realize convenient, effective, and reliable lifting of a curtain wall plate, and can solve the problem of inconvenient curtain wall plate lifting in the prior art.

The invention discloses an aerogel base material loading tool grabbing device which comprises a hoisting pipe, a hoisting seat is fixed to the lower end of the hoisting pipe, the top of the hoisting seat upwards penetrates through the lower end of the hoisting pipe to be inserted into the hoisting pipe, an annular seat is fixed to the bottom of the hoisting seat, a cavity and a vertical rod are arranged in the hoisting seat, and the cavity is vertically communicated with the inner circle of the annular seat; the vertical rod is vertically arranged in the hoisting base in a penetrating mode, the top of the vertical rod upwards penetrates through the top of the hoisting base to be inserted into the hoisting pipe, the bottom of the vertical rod is located in the cavity, a limiting block and a first induction block are arranged on a rod body, inserted into the hoisting pipe, of the vertical rod, a spring base is arranged at the bottom of the vertical rod, and the vertical rod between the spring base and the hoisting base is sleeved with a reset spring. At least three hoisting tongues are arranged on the annular base in a penetrating mode, a hoisting tongue driving mechanism is arranged on the hoisting base, and a first upper proximity switch is arranged on the hoisting pipe in a penetrating mode. The grabbing device can be used for rapidly grabbing and reliably hoisting the aerogel base material loading tool.

The invention discloses a construction method for dismantling an arch bridge with an upper span existing line, comprising the steps of: 1. Erection of a protective scaffold; 2. Static crushing and demolition of the blasting demolition structure on the arch; 3. Manual demolition of the blasting protective layer; 4. The demolished arch ring cutting; 5. hoisting of the arch ring to be hoisted; 6. demolition of the structure under the arch. The method of the invention is simple, reasonable in design, convenient in construction and good in use effect. While the protective scaffolds fixed on the front and rear sides of the demolished arch bridge are used for effective protection, the demolished arch bridge is repaired by a combination of static crushing and manual chiseling. The structure on the arch is removed to ensure that the static crushing process will not damage the plain concrete arch ring and will not interfere with the existing railway line crossed; after the arch ring is exposed, use a wire saw to cut and decompose the demolished arch ring Afterwards, lifting and dismantling is carried out, and then the structures under the arch on the left and right sides are quickly dismantled, which can effectively shorten the construction period, speed up the efficiency of arch bridge demolition, and the dismantling process is safe and reliable.