39results about How to "Realize turnover use" patented technology

The invention relates to an assembly type variable steel girder platform, a distribution method and an assembly method thereof. The platform is supported on a core tube, and is formed by sectional steel grinders through being fixedly connected, and the sectional steel grinders mainly consist of main stress grinders, sub stress grinders and support rods between grinders, wherein the main stress grinders are formed by main grinder standard nodes and main grinder groined node standard nodes through being dismountably connected via node plates with bolt holes, end sealing plates with bolt holes and screw bolts, the sub stress grinders are formed by sections of sub grinder standard sections through being dismountably connected end to end, and in addition, the sub stress grinders are dismountably connected between two main stress grinders. The platform can be applied to template lifting construction of high and superhigh building core tube steel platforms, and can also be used as platforms for large-area spanning construction operation and construction machine pile carrying and placement, the construction is very easy, the work period of the construction is greatly accelerated, and the construction cost is reduced.

The invention provides a method for constructing an anchoring system of a structural steel overhanging scaffold. The method for constructing the anchoring system of the structural steel overhanging scaffold comprises the steps that after a floor formwork project is completely erected and passes acceptance inspection, according to the placing position of a structural steel overhanging girder, the installation position of a tool type anchoring bolt combined piece is determined, nails penetrate through fixing holes in a bottom anchoring steel plate, so that the bottom anchoring steel plate is fixed to a formwork, the bottom anchoring steel plate is coated with a release agent or a plastic film is laid on the bottom anchoring steel plate, each anchor bolt is sleeved with a PVC embedded sleeve, plate ribs and reinforcing steel bars are bound according to the design requirements, and after an upper-layer wall body of a layer to be overhung reaches certain strength, tool type pulling rings are additionally arranged through PVC embedded sleeve holes. The anchoring system of the structural steel overhanging scaffold is of an assembling type and tool type, materials are saved, disassembly and assembly are simple, revolution is convenient, and labor is saved; cutting is not need after the system is used, the following process is prevented from being influenced, the work period is shortened, and the system is environmentally friendly and remarkable in economic benefit.

The invention belongs to the field of building construction and particularly relates to a concrete embedded bolt assembly allowing to be taken out. The concrete embedded bolt assembly allowing to be taken out is characterized by comprising a double-thread screw, a long nut with protrusions, a nut and a gasket. A thread section and a polish rod section are arranged on the double-thread screw, and an outer hexagonal boss is arranged at the right end of the double-thread screw. The clamping piece protrusions are arranged on the outer wall of the long nut with the protrusions, and a clamping groove is formed in the right end of the long nut with the protrusions and used for being fastened with an anchored plate. The long nut with the protrusions is formed by combining multiple nut pieces. The left of the double-thread screw is screwed into the long nut with the protrusions, the right end of the double-thread screw is located outside the long nut with the protrusions, the right end of the double-thread screw is sleeved with the gasket, and the nut is screwed at the right end of the double-thread screw. The assembly not only can meet the wall attachment stress requirement of a construction tool, but also has detachable performance, so that the assembly is used in a circulation mode and does not affect an attachment wall structurally or later period construction.

The invention belongs to the technical field of super high-rise building construction, and discloses a telescopic bracket device capable of achieving circulation and a using method of the telescopic bracket device. The telescopic bracket device comprises an external connection sleeve beam, a telescopic joint, a telescopic mechanism and ejection adjusting mechanisms; the external connection sleeve beam is fixedly installed at the end of a supporting beam of a tower crane, one end of the telescopic joint is arranged in the external connection sleeve beam in a manner of being capable of sliding in the axial direction, and the other end of the telescopic joint extends out of the external connection sleeve beam; the other end of the telescopic joint is detachably installed on a wall of a core barrel, and the telescopic mechanism is arranged in the external connection sleeve beam and located between the external connection sleeve beam and one end of the telescopic joint; the multiple ejection adjusting mechanisms are evenly arranged between the external connection sleeve beam and the telescopic joint, one end of each ejection adjusting mechanism is fixedly installed on the external connection sleeve beam, and the other end of each ejection adjusting mechanism penetrates the external connection sleeve beam to be in contact with the outer surface of the telescopic joint. By means of the telescopic bracket device, loads of the supporting beam of heavy equipment like the tower crane can be effectively transferred, and are transferred along with the supporting beam, and circulation using is achieved.

The invention relates to a reusable concrete floor steel bar pre-supporting device, which comprises four upright posts, a square positioning steel plate, hanging arm supporting arms, steel bar hanging arms and pulling arms. Due to the structure, the device is processed in a factory to ensure processing accuracy, and is suitable to be used at the cross junction of steel bars, and a floor steel bar layer is accurately positioned; L-shaped right-angle steel bar hooks are located at opposite positions by pulling the pulling arms, so that the lifted steel bars are oppositely fixed and cannot slide; after concrete is poured, the L-shaped right-angle steel bar hooks are rotated to be located at withdrawable positions by pulling the pulling arms during surface finishing, and the steel bar pre-supporting device is taken out, cleaned and reused; and meanwhile, the extension length of the steel bar hanging arms can be adjusted according to the thickness of a floor, the four upright posts with appropriate length can be replaced when the adjusted steel bar hanging arms cannot meet the actual requirement. The device has a simple structure, is convenient to assemble and disassemble and can be rented and turned over, construction cost is reduced, and the input of construction personnel is reduced.

The invention discloses a track type tower crane attaching platform device. The device comprises a support system, tracks, standard knots, backstop springs, a U-shaped platform, bolts, buffer springs, a 1-shaped platform and guardrails, wherein the support system is inserted in the standard knots and is provided with the tracks; the backstop springs are arranged at the ends of the tracks; the tracks are connected with the U-shaped platform which is wholly of a U-shaped structure; steel frame tubes are arranged below the U-shaped platform; wheels are arranged in the upper ends of the U-shaped platform; U-shaped bolts, fasteners and the bolts are approximately arranged in the middle of U-shaped vertical beams of the U-shaped platform and are used for connecting the U-shaped platform and the steel frame tubes to form a whole body; steel wire meshes are arranged on the upper planes of the steel frame tubes; and the buffer springs are arranged on the inner side surfaces of cross beams of the U-shaped platform. According to the track type tower crane attaching platform device, the time of a mounting platform high in the air can be shortened, so that the tower crane attaching platform can be installed and constructed more safely and reliably, and the alternative use can be realized.

The invention discloses a sectional type concrete pre-buried screw rod capable of being taken out and a using method thereof. The pre-buried screw rod comprises a screw rod body, the screw rod body comprises an unthreaded rod section and a large-threaded section, and the unthreaded rod section and the large-threaded section are designed in split; a second through hole is formed in the center of the large-threaded section in the axial direction, a plurality of through holes are formed in the large-threaded section in the radial direction, and a connection part is installed on the inner wall of the large-threaded section; the unthreaded rod section comprises a split shear resisting section and a filling section, a counter bored hole is formed in the center of the shear resisting section in the axial direction, and a first through hole is formed in the center of the filling section in the axial direction; and the counter bored hole, the first through hole and the second through hole form a cavity, a connecting rod connecting the shear resisting section, the filling section and the large-threaded section into a whole is installed in the hole, one end of the connecting rod is provided with a boss, and the other end of the connecting rod is in threaded connection with the second through hole. The sectional type concrete pre-buried screw rod can be taken out of concrete and recycled, and liquid of silica gel and the like can be injected to increase friction force between bolts and the concrete.

The invention relates to shear wall formwork opposite-pull connecting pieces and a formwork reinforcing structure thereof, and belongs to the technical field of wall formwork reinforcing. The shear wall formwork opposite-pull connecting pieces are arranged in pairs when used and comprise cable-stayed reinforcing assemblies and straight-pull reinforcing assemblies, wherein the cable-stayed reinforcing assemblies and the straight-pull reinforcing assemblies are detachably connected together, the cable-stayed reinforcing assemblies are used for being arranged on two adjacent shear wall formworksto conduct cable-stayed reinforcing on the two adjacent shear wall formworks, and the straight-pull reinforcing assemblies are used for conducting opposite-pull reinforcing on the two shear wall formworks which are arranged in parallel at intervals. The shear wall formwork reinforcing structure comprises the shear wall formworks and the shear wall formwork opposite-pull connecting pieces. According to the shear wall formwork opposite-pull connecting pieces and the formwork reinforcing structure thereof, the shear wall formworks can be reinforced in the oblique direction and the horizontal direction simultaneously, materials are saved, meanwhile, when concrete is poured, the shear wall formworks cannot float upwards and be expanded, and therefore the quality of a formed shear wall is guaranteed.

The invention discloses a movable prefabricated member sunlight temperature-rise maintenance system and method. Fire coal and fuel gas are usually adopted for maintenance of existing prefabricated member maintenance kilns, while coal and other fossil resources belong to non-renewable resources, and combustion causes severe pollution while bringing heat. Although fuel gas belongs to clean energy, ventilation cannot be achieved in residence districts under construction. The movable prefabricated member sunlight temperature-rise maintenance system comprises a maintenance greenhouse, and the maintenance greenhouse is composed of a structural frame body (1), openable greenhouse doors (2) and a heat absorption and thermal insulation panel (3); the heat absorption and thermal insulation panel isinstalled on the structural frame body, and the structural frame body is a structure formed by connection of main keels (4) and subsidiary keels (5). The maintenance greenhouse is provided with an auxiliary heating device, and a movable production line is arranged outside the maintenance greenhouse.

The invention discloses a clamping plate type reinforcing cage mounting platform. The clamping plate type reinforcing cage mounting platform comprises an annular gap platform and clamping plate systems which are arranged on the annular gas platform in a clamping manner, wherein the annular gap platform comprises a main bracket which is arranged circumferentially around a reinforcing cage and an annular plate which is mounted on the main bracket in a protruding manner; each of the clamping plate systems comprises a plurality of clamping plates which are arranged on the annular plate in a clamping manner; the direction towards the center of the annular plate is defined as the front direction; the clamping plates comprise plate bodies provided with front protruding angles and clamping slots which are formed in positions under the plate bodies and form front side surfaces and rear side surfaces. According to the clamping plate type reinforcing cage mounting platform disclosed by the invention, the integral construction of butting and positioning of extra-long overweight reinforcing cages is realized, the construction mechanized level and construction automatized level are effectively improved, and the construction operating environment is improved, so that the mounting operation of the reinforcing cage is safe, convenient and precise.

The invention relates to a removable protection barrel used for cast-in-place pile construction in water. The removable protection barrel comprises one or more common protection barrel sections; the common protection barrel section at the bottommost is a bottom protection barrel section; the common protection barrel sections and the bottom protection barrel section are the same in diameter and structure and are each composed of an upper flange sheet, a lower flange sheet and a barrel body; and each upper flange sheet is connected to the top of the corresponding barrel body, and each lower flange sheet is connected to the bottom of the corresponding barrel body. The invention further provides a protection barrel composed of the removable protection barrel and a non-removable protection barrel, and a method for carrying out concrete cast-in-place pile construction in water by utilizing the protection barrel. By means of the protection barrel and the method for carrying out concrete cast-in-place pile construction by utilizing the protection barrel, the protection barrel on water surface can be operated and removed on the water for recycling. Compared with the manufacturing cost of atraditional non-removing treatment mode, the manufacturing cost of the protection barrel is slightly high, but the protection barrel can be repeatedly used, the using cost is very low, besides, no underwater operation is needed and the removing cost is low, so that great economic benefits and safety are showed.

The invention discloses an underground temporary fold line steel frame supporting system and a construction method, and relates to the technical field of mechanical construction. The underground temporary fold line steel frame supporting system comprises a foundation pit underground continuous wall, a bottom plate is arranged at the bottom of the foundation pit underground continuous wall, floor slabs are arranged above the bottom plate, and permanent structure columns are arranged among the floor slabs, a plurality of supporting points are arranged on the bottom face of the floor slab on thelowest layer in the center line direction of the floor slab on the lowest layer, arch-shaped temporary supporting assemblies are arranged on the two sides, between the floor slab on the lowest layer and the bottom plate, of the supporting points, and the arch-shaped temporary supporting assemblies and the floor slabs are only connected at the supporting points. In order to solve the problem of high construction cost in the prior art, the construction cost is effectively reduced by reducing repeated configuration of reinforcing steel bars and circulation use of full scaffolds by the undergroundtemporary fold line steel frame supporting system and the construction method.

The invention discloses a high-efficiency transit cargo container, and belongs to the technical field of automobiles. The high-efficiency transit cargo container comprises a cargo container body, a cargo container bottom plate, a cargo container secondary beam, lifting lugs and fixing seats, wherein the cargo container body, the cargo container bottom plate and the cargo container secondary beam are arranged in a split manner; the tail end of the cargo container bottom plate is articulated with the cargo container secondary beam by a turnover seat; a rear door and a turnover mechanism are arranged at the tail part of the cargo container body; the lifting lugs are located on the two sides of the cargo container body, and arranged in a front-rear symmetry manner; the fixing seats are located at the bottoms of the two sides of the cargo container body; the lower surfaces of the fixing seats and the lower bottom surface of the cargo container body are in the same horizontal plane; fixing devices are arranged on the upper surfaces of the two sides of the cargo container bottom plate; the fixing seats are adaptive to the fixing devices. The high-efficiency transit cargo container is provided with the lifting lugs on the two sides of the cargo container body in the front-rear symmetry manner and the fixing seats are adaptive to the fixing devices, so that the high-efficiency transit cargo container is easy to hoist and simple to mount and dismount, realizes rapid separation and mounting of the cargo container body and the cargo container bottom plate, improves the transit efficiency, and saves the time and manpower.

The invention provides a wire box filling device and a filling method. The filling device comprises a fixed filling box nested with a wire box, a flexible adjusting rod rotatably connected with a rotary shaft through a screw thread, and a sleeve coaxially arranged on the outer parts of the rotary shaft and the flexible adjusting rod in a sleeving way, wherein the bottom part of the fixed filling box is opened; a top plate is arranged on the top part of the fixed filling box; a through hole is formed in the top plate; the rotary shaft is arranged in the through hole in a penetrating way; the first end of the rotary shaft is the drive end located on the outer side of the top plate; an outer screw thread located on the inner side of the top plate is formed at the second end of the rotary shaft; the second end of the flexible adjusting rod forms the support end part supported in the wire box; the end part of the sleeve is fixed to the top plate; and a convex edge contacting and connectingwith the flexible adjusting rod is formed on the inner wall of the sleeve, and drives the flexible adjusting rod to move toward the direction far away from the sleeve through friction. According to the wire box filling device and the filling method provided by the invention, a wire box cleaning process can be reduced, and the cost is reduced.

The invention relates to an assembly type variable steel girder platform, a distribution method and an assembly method thereof. The platform is supported on a core tube, and is formed by sectional steel grinders through being fixedly connected, and the sectional steel grinders mainly consist of main stress grinders, sub stress grinders and support rods between grinders, wherein the main stress grinders are formed by main grinder standard nodes and main grinder groined node standard nodes through being dismountably connected via node plates with bolt holes, end sealing plates with bolt holes and screw bolts, the sub stress grinders are formed by sections of sub grinder standard sections through being dismountably connected end to end, and in addition, the sub stress grinders are dismountably connected between two main stress grinders. The platform can be applied to template lifting construction of high and superhigh building core tube steel platforms, and can also be used as platforms for large-area spanning construction operation and construction machine pile carrying and placement, the construction is very easy, the work period of the construction is greatly accelerated, and the construction cost is reduced.

The invention discloses a tie for tie separation of a tunnel boring machine (TBM) trolley and a battery electric vehicle (BEV) system and a construction method thereof. The tie comprises a shield tunnel, wherein the shield tunnel is provided with upper ties and a lower tie which are detachably connected with each other; the upper ties comprise upper tunnel segments cooperating with the shield tunnel; the upper tunnel segments are provided with upper position lug plates, lower position lug plates and trolley traveling ties; the upper tunnel segments are provided with bending bolt lead screw heads; the lower tie comprises a bottom supporting tunnel segment; BEV traveling ties are arranged on the bottom supporting tunnel segment; and the upper ties and the lower tie are positioned in two planes. The tie for the tie separation of the TBM trolley and the BEV system has the beneficial effects of occupying little tunnel space, facilitating the dismounting and position shifting, improving thework efficiency, fully utilizing bending bolts in annular seams between the tunnel segments of side walls of the tunnel as the force supporting point of the independent novel tie for the suspension ofthe trolley, facilitating the stress transmission of the load of the trolley, achieving non-interference since the trolley and the BEV system can operate independently after the tie separation of thetrolley and the BEV system, and realizing the circulation use of the trolley traveling ties.

The invention discloses a high-efficiency transit cargo container, and belongs to the technical field of automobiles. The high-efficiency transit cargo container comprises a cargo container body, a cargo container bottom plate, a cargo container secondary beam, lifting lugs and fixing seats, wherein the cargo container body, the cargo container bottom plate and the cargo container secondary beam are arranged in a split manner; the tail end of the cargo container bottom plate is articulated with the cargo container secondary beam by a turnover seat; a rear door and a turnover mechanism are arranged at the tail part of the cargo container body; the lifting lugs are located on the two sides of the cargo container body, and arranged in a front-rear symmetry manner; the fixing seats are located at the bottoms of the two sides of the cargo container body; the lower surfaces of the fixing seats and the lower bottom surface of the cargo container body are in the same horizontal plane; fixing devices are arranged on the upper surfaces of the two sides of the cargo container bottom plate; the fixing seats are adaptive to the fixing devices. The high-efficiency transit cargo container is provided with the lifting lugs on the two sides of the cargo container body in the front-rear symmetry manner and the fixing seats are adaptive to the fixing devices, so that the high-efficiency transit cargo container is easy to hoist and simple to mount and dismount, realizes rapid separation and mounting of the cargo container body and the cargo container bottom plate, improves the transit efficiency, and saves the time and manpower.

The invention discloses a super-long anchor cable sliding groove and a use method thereof. The super-long anchor cable sliding groove comprises an end cap and sliding groove sections, wherein the endcap and the sliding groove sections are successively connected from front to back, the sliding groove sections comprise a first section and one or more standard sections, the front end of the first section and the rear end of the end cap are connected through a detachable connecting structure, the sliding groove sections are connected end to end to be lengthened, and the head end of the rear sliding groove section and the tail end of the preceding sliding groove section are detachably connected through a connecting assembly. The super-long anchor cable sliding groove is especially for super-long anchor cables, a lengthening mode which is easy in operation, quick in lengthening, convenient to stack, and capable of being recycled advantageously is adopted by connection between parts of the sliding groove, the designed anchorage length and required pulling resistance of a super-long anchor cable are guaranteed, the anchor cable construction quality is guaranteed, the super-long anchor cable sliding groove can be recycled and reused, energy conservation and environment protection are achieved, and the good economic benefits are achieved.

The invention provides an assembled corbel node structure with removable concrete embedded parts, including a removable embedded part and a positioning force transmission plate connected and fixed thereto. Parts, connecting parts and removable embedded parts are detachable connections. It can not only meet the force requirements of the fulcrum of large-scale mechanical equipment, but also has detachable performance, so it can be used repeatedly, and it will not affect the structure or later construction of the wall to which it is attached.

The invention discloses a concrete support pin-mounted component suitable for foundation pit support. The concrete supporting rods are respectively hinged with the pin-mounted connecting heads through corresponding connecting pin shafts, and each diagonal brace positioning member is connected between two adjacent concrete supporting rods. The present invention facilitates the prefabrication of the concrete support at an external site in advance and transports it to the site for installation, thereby improving the construction efficiency of the foundation pit supporting structure, and is convenient for disassembly and turnover, thereby reducing the construction cost of the foundation pit supporting structure.

The invention relates to a manufacturing method of the detachable fixing part of an elevator protective door. The elevator protective door comprises the fixing part and a rotating part, wherein the fixing part is composed of a left semicircular hoop, a right semicircular hoop, a rotating shaft and a bayonet connecting bolt, the left semicircular hoop and the right semicircular hoop are equal in height and diameter, one end of the left semicircular hoop and one end of the right semicircular hoop are connected with the rotating shaft, the other end of the left semicircular hoop and the other end of the right semicircular hoop respectively bend outwards to form a connecting plate, a U type groove is formed in the middle close to the top of the left connecting plate, a connecting hole corresponding to the U type groove is formed in the center of the right connecting plate, and the bayonet connecting bolt is sequentially inserted in the connecting hole through the U type groove and fastened through a nut to form fastening connection with a stand column. The rotating part is composed of a sleeve and an insertion, the insertion is composed of an inserting section and a protective door connecting section, the sleeve is welded to the outer side face in the middle of the left semicircular hoop, the inserting section of the insertion is inserted into the sleeve and can rotate freely, and the protective door connecting section is connected with a frame of the protective door in a welded mode. The detachable fixing part has the advantage of being convenient to assemble and disassemble, and can be widely applied to high-rise building construction.

The invention discloses a clamping plate type reinforcing cage mounting platform. The clamping plate type reinforcing cage mounting platform comprises an annular gap platform and clamping plate systems which are arranged on the annular gas platform in a clamping manner, wherein the annular gap platform comprises a main bracket which is arranged circumferentially around a reinforcing cage and an annular plate which is mounted on the main bracket in a protruding manner; each of the clamping plate systems comprises a plurality of clamping plates which are arranged on the annular plate in a clamping manner; the direction towards the center of the annular plate is defined as the front direction; the clamping plates comprise plate bodies provided with front protruding angles and clamping slots which are formed in positions under the plate bodies and form front side surfaces and rear side surfaces. According to the clamping plate type reinforcing cage mounting platform disclosed by the invention, the integral construction of butting and positioning of extra-long overweight reinforcing cages is realized, the construction mechanized level and construction automatized level are effectively improved, and the construction operating environment is improved, so that the mounting operation of the reinforcing cage is safe, convenient and precise.

The invention relates to a quick turnaround assembled steel structure and a construction method thereof. The first standardized main body part and the second standardized main body part are both "凵" shaped channel steel structures; The width and height of the first standardized body part are equal, the width and height of the second standardized body part are equal, the groove depth and width of the grooves on the first standardized body part and the second standardized body part are equal , the cross-sections of the grooves opened on the first standardized main body part and the second standardized main body part are all square structures, and the grooves opened on the first standardized main body part are provided with itself and the second standardized main body part. The epicyclic assembly device is provided with a second standardized epicyclic assembly device that cooperates with itself and the first standardized body part in the groove opened on the second standardized main body part, and the first standardized epicyclic assembly device and the second standardized epicyclic assembly device cooperate with each other ; Change different lengths, widths and heights according to different needs, the overall connection structure is simple and easy to operate, the connection points are tightly connected, and the strength is high.

The invention relates to a reusable concrete floor steel bar pre-supporting device, which comprises four upright posts, a square positioning steel plate, hanging arm supporting arms, steel bar hanging arms and pulling arms. Due to the structure, the device is processed in a factory to ensure processing accuracy, and is suitable to be used at the cross junction of steel bars, and a floor steel bar layer is accurately positioned; L-shaped right-angle steel bar hooks are located at opposite positions by pulling the pulling arms, so that the lifted steel bars are oppositely fixed and cannot slide; after concrete is poured, the L-shaped right-angle steel bar hooks are rotated to be located at withdrawable positions by pulling the pulling arms during surface finishing, and the steel bar pre-supporting device is taken out, cleaned and reused; and meanwhile, the extension length of the steel bar hanging arms can be adjusted according to the thickness of a floor, the four upright posts with appropriate length can be replaced when the adjusted steel bar hanging arms cannot meet the actual requirement. The device has a simple structure, is convenient to assemble and disassemble and can be rented and turned over, construction cost is reduced, and the input of construction personnel is reduced.

The invention relates to the field of construction of shield tunneling sleepers, in particular to a safe and rapid combined shield tunneling light sleeper. The safe and rapid combined shield tunneling light sleeper solves the problems that according to an existing light sleeper, installation needs great effort, rail disengagement occurs during operation, maintenance needs a long time, and disassembly needs a large amount of labor after construction. The safe and rapid combined shield tunneling light sleeper comprises transport cart box iron sleeper bodies and shield tunneling sleeper bodies, wherein the shield tunneling sleeper bodies are assembled together with the two ends of the transport cart box iron sleeper bodies. The two ends of each transport cart box iron sleeper body is each provided with a U-shaped groove, and transport cart rails are arranged in the U-shaped grooves in the two sides of each transport cart box iron sleeper body. Each shield tunneling sleeper body comprises arc steel plates and arc step sleeper bodies, wherein the arc steel plates are attached to a tunnel bottom segment and are identical in radian, and the arc step sleeper bodies are fixed to the high ends of the arc steel plates. The lower end of each arc steel plate is provided with a protruding portion which is inserted into the corresponding transport cart box iron sleeper body. Each arc step sleeper body is provided with a clamping groove formed by two opposite rail clamping locating plates. Shield tunneling rails are arranged in the rail clamping grooves. By the adoption of the safe and rapid combined shield tunneling light sleeper, the frequency of rail disengagement during operation is reduced, construction safety is guaranteed, and the situation that personnel are specially assigned to conduct maintenance is avoided; the safe and rapid combined shield tunneling light sleeper has the advantages that the technology is simple and advanced, and the practicability is high.

The invention discloses a sectional type concrete pre-buried screw rod capable of being taken out and a using method thereof. The pre-buried screw rod comprises a screw rod body, the screw rod body comprises an unthreaded rod section and a large-threaded section, and the unthreaded rod section and the large-threaded section are designed in split; a second through hole is formed in the center of the large-threaded section in the axial direction, a plurality of through holes are formed in the large-threaded section in the radial direction, and a connection part is installed on the inner wall of the large-threaded section; the unthreaded rod section comprises a split shear resisting section and a filling section, a counter bored hole is formed in the center of the shear resisting section in the axial direction, and a first through hole is formed in the center of the filling section in the axial direction; and the counter bored hole, the first through hole and the second through hole form a cavity, a connecting rod connecting the shear resisting section, the filling section and the large-threaded section into a whole is installed in the hole, one end of the connecting rod is provided with a boss, and the other end of the connecting rod is in threaded connection with the second through hole. The sectional type concrete pre-buried screw rod can be taken out of concrete and recycled, and liquid of silica gel and the like can be injected to increase friction force between bolts and the concrete.

The invention discloses an electric drill support for upward position drilling for a cantilever slab, and a use method thereof. The electric drill support comprises an upper vertical rod and a lower vertical rod which are oppositely arranged, wherein the upper vertical rod is connected with the lower vertical rod through a press rod and a connection rod from top to bottom, an electric drill is installed and fixed to the top end of the upper vertical rod, one end of the connection rod is hinged and fixed to the bottom end of the upper vertical rod, and the other end of the connection rod is hinged and fixed to the middle part of the sidewall of the lower vertical rod; and meanwhile, one end of the press rod is hinged and fixed to the top end of the lower vertical rod, and the middle part ofthe other end of the press rod is hinged and fixed to the middle part of the sidewall of the upper vertical rod. The support disclosed by the invention is high in practicability, applicable to upwarddrilling for unsafe parts such as the cantilever slab and hole periphery, and further capable of being used for drilling for a top plate; and moreover, the material of the support can be obtained anywhere, and is capable of rapidly forming the support for construction at any time, so that the working efficiency is increased, hole periphery working and ascending working are avoided, the unsafe construction such as mechanical damage is reduced, and the labor intensity of construction personnel is lowered.

The invention discloses a super high-rise outer frame giant column protection platform system and an installation method thereof. The super high-rise outer frame giant column protection platform system comprises a hanging frame and an outer frame giant column, working platforms are arranged around the giant column; a horizontal clamp is arranged below each working platform, and one end of each horizontal clamp is fixed on the hanging frame; an inclined pulling rod is arranged below each horizontal clamp, one ends of the inclined pulling rods are fixed at the tail ends of the horizontal clamps,and the other ends of the inclined pulling rods are fixed to the hanging frame; a steel wire rope is arranged below each inclined pulling rod, one ends of the steel wire ropes are fixed at the fixingpoints of connecting of the horizontal clamps and the inclined pulling rods, and the other ends of the steel ropes are fixed on the hanging frame; and the upper ends of the horizontal clamps are provided with I-shaped steel pieces, and the top ends of the I-shaped steel pieces support the working platforms. The super high-rise outer frame giant column protection platform system is high in practicability and can be applied to different floor heights, different giant column sections and the overhang length of a lateral side of the outer side of the giant column; and the protective platform canbe directly hoisted and transferred after being installed at a time, so that turnover using is quickly realized, the work efficiency is improved, the cost is reduced, and meanwhile, the working intensity of construction personnel is reduced.

The invention discloses a safety belt suspension device for scaffolding installation, which comprises two vertically arranged I-beams, a pressure ring steel plate is welded at the bottom of the vertical I-beam, and the top of the pressure ring steel plate is close to the vertical I-beam Anchor steel plates are welded on both sides, and positioning bolts are set through the bottom of the anchor steel plate and the pressure ring steel plate; the present invention adopts the fixing method of welding and anchoring as a whole, and is fixed into a triangle as a whole, so that the stability of the device is enhanced and the pressure ring steel plate at the lower end of the device is It is detachable from the bolts and can be used repeatedly. The height of the I-beam meets the standing height of the workers when installing the scaffold, and meets the safety belt usage specification of "high hanging and low use". The hole reserved at the end of the protruding I-beam uses a wire rope cushion cover , can greatly reduce the degree of wear of the wire rope and can prevent slipping, the overall suspension device can be superimposed to increase the height, and can be applied to floors of various heights.