84results about How to "Reduce construction safety hazards" patented technology

The invention discloses a mini step excavation method suitable for IV-V level of surrounding rocks of a large-section tunnel. A tunnel face is divided into upper and lower steps, the height of the lower step ranges from 5m to 8m, and advanced geologic prediction is implemented; the tunnel face stability is evaluated and classified; whether to implement advanced support and tunnel face reinforcement is decided, and a processing method is used till the tunnel face is stable; a drill jumbo drills blast holes and fill an explosive in the full section of the tunnel face, whole detonation is carriedout, and the vertical length difference between the upper and lower steps ranges from 3m to 5m; ventilation, danger removing, under-excavation handling and slag removing are carried out on the tunnelface; the tunnel face after excavation is sketched geologically, the stability of the tunnel face is determined, a wet spraying manipulator sprays an early high-strength concrete preliminarily, and the tunnel face is enclosed; an arc centering installation trolley erects a steel frame and implements annular and vertical connection, and concrete is sprayed again to reach a design thickness; an inverted arc area of a present excavation cycle is back filled with hole slag, and work of next cycle is carried out; a movable inverted arch trestle is used to pour the inverted arc and sidewall with basic concrete; earthwork cloths and waterproof boards are laid, and lining steel bars of an arch wall are lashed; and the lining of the arch wall is poured and maintained.

The invention provides a rapid plugging/pulling cable branching box. The branching box comprises a box body, three insulators, three copper bars, three connection wires, three T-shaped cable terminals, three straight line adapters and an insulation separation plate, wherein the insulators, the copper bars, the connection wires and the T-shaped cable terminals are arranged in the box body. Each of the straight line adapters comprises a conductive rod, an insulation layer, a rapid clamping head and a housing. One end of each of the straight line adapters is electricallyconnected with one T-shaped cable terminal in the box body correspondingly. The straight line adapters, the T-shaped cable terminals, the connection wires and the copper bars form a three-phase electric access. In use, the copper bars are correspondingly connected with three phase wires A, B and C of a ring main unit incoming cable. The straight line adapters are quickly clamped with rapid joints of three bypass cable joints via the rapid clamping heads. The branching box is simple in structure, low in cost and convenient to achieve. Laying distances of flexible bypass cables can be greatly reduced in use, so a difficulty in remote laying of power supply points and flexible bypass cables is solved and rush repair efficiency is increased.

The invention discloses an installation technology of a connecting board type inner separation wall. The installation technology comprises the following steps of: locating, despoiling, installing vertical metal supporting columns, installing horizontal metal supporting columns, installing wallboards in lower installation spaces and installing connecting boards with the height being lower than that of the wall boards in upper installation spaces. According to the installation technology disclosed by the invention, the space between beam boards and floor boards are separated into multiple lower installation spaces and multiple upper installation spaces through horizontal metal supporting beams and vertical metal supporting beams, the wall boards are arranged in the lower installation spaces, the connecting boards are arranged in the upper installation spaces, thus the labor efficiency is greatly increased, and the firm performance of a wall body is enhanced.

The invention discloses an auxiliary device capable of paying off a cable from top to bottom in building construction and a cable paying off method. The auxiliary device comprises at least three fixed pulleys, the fixed pulleys are fixedly arranged on a vertical strut and are respectively located at different heights, at least one fixed pulley can be regulated left and right relative to the vertical strut; and a horizontal cross rod is arranged on the vertical strut, and an inclined pull rod is arranged between the other end of the horizontal cross rod and the vertical strut. The cable paying off method disclosed by the invention comprises the following steps of: (1) fixing the auxiliary device on a floor slab, and mounting the vertical strut in a wire hole; and (2) enabling one end of the cable to round all the fixed pulleys from top to bottom, then starting paying off, regulating the fixed pulley which can be regulated at left and right as required in a cable paying off process to change horizontal distance between the fixed pulley and adjacent fixed pulleys, thus paying off speed of the cable can be controlled. According to the invention, labour is saved in the cable paying off process, a falling speed is easy to control, the whole cable paying off process is very safe, and potential safety hazards in construction are reduced.

The invention discloses an intelligent control system for a tower crane, and belongs to the field of construction engineering machinery. The control system comprises a control center, a wireless communication module, a cloud server, a mobile control terminal, a high-definition video monitoring module, a lifting hook intelligent obstacle avoidance module, a data acquisition and transmission module, an action execution module and an alarm module, the cloud server, the mobile control terminal, the high-definition video monitoring module and the lifting hook intelligent obstacle avoidance module are connected with the control center through the wireless communication module, and the data acquisition and transmission module, the action execution module and the alarm module are connected with the control center. According to the intelligent control system for the tower crane, the core components of the tower crane are integrated through information technology means and are not detachable, so that intelligent operation and intelligent obstacle avoidance within the calibration range of the tower crane are realized, the labor cost of tower crane operation is reduced, the potential safety hazard of construction is further reduced, and the hoisting operation efficiency of the tower crane is improved.

The invention discloses a disconnecting switch overhaul lifting appliance, and aims to design a disconnecting switch overhaul lifting appliance which is safe and convenient to use. The disconnecting switch overhaul lifting appliance provided by the invention has the technical scheme that the disconnecting switch overhaul lifting appliance comprises a guide rope and a pulley block; a fixed pulley is arranged at the top of a lifting appliance rack; a support rod of the lifting appliance rack is fixedly connected with the pulley block; the guide rope penetrates through each pulley on the pulley block and penetrates through the fixed pulley; and one end of the guide rope is provided with a rope sleeve. The pulley block is provided with a fixed pulley and a movable pulley. The disconnecting switch overhaul lifting appliance has simple structure, use efficiency can be improved effectively, and potential safety hazards of construction workers can be reduced.

The invention discloses a special tool for maintenance of a corrugated beam barrier of a highway and relates to the technical field of barrier maintenance. By the adoption of the special tool for maintenance of the corrugated beam barrier of the highway, the situation that the barrier bounces and injures people in the dismantling process can be avoided, and a repairing function and a short-distance transferring function are achieved. The special tool for maintenance of the corrugated beam barrier of the highway comprises a main rod and a traveling support. A long cross arm and a short cross arm are arranged at the front end of the main rod, wherein the long cross arm is located at the top end of the main rod, and the short cross arm is located behind the long cross arm, in parallel to the long cross arm and is provided with a gap. A movable supporting structure is arranged at the top end of the traveling support. The main rod is provided with a supporting section. The supporting section of the main rod is arranged on the movable supporting structure. According to the special tool for maintenance of the corrugated beam barrier of the highway, the main rod is arranged to be in an F shape, and a corrugated beam protective plate right can be placed in the gap between the long cross arm and the short cross arm. During dismantling, the long cross arm at the end of the main rod is clamped on the back side of a corrugated beam, the short cross arm is clamped on the front side of the corrugated beam, and even if the barrier bounces elastically when screws are separated from the barrier and stand columns are installed, the situation that the barrier bounces and injures people is avoided under the restraint of the short cross arm. Meanwhile, a clamping opening formed by the F shape can also have shaping and repairing effects on the corrugated beam protective plate which deforms slightly.

The invention discloses a quick lifting mechanism applied to bridge construction. The quick lifting mechanism comprises a movable rack, a motor crawler belt assembly and a hanging basket. The A trussis fixedly mounted on the top of the movable rack. The motor crawler belt assembly is fixedly mounted on the outer wall of the top of the movable rack. The outer wall of the end of the movable rack ishinged to the outer wall of the middle portion of a supporting frame. The upper half portion of the supporting frame is internally provided with sliding grooves. Wire ropes are wound on the outer walls of winding wheels and are attached to the outer walls of guide wheels. The hanging basket is fixed to the lower ends of the wire ropes. The edges of the ends of the movable rack are fixedly connected with locating tubes. The quick lifting mechanism applied to bridge construction facilitates position movement and change and positioning operation. The positioning and installation stability and efficiency of the mechanism are improved. Meanwhile, the quick lifting mechanism can be protected against falling in the using process. Potential construction safety hazards of the quick lifting mechanism during lifting motion are effectively reduced.

The invention discloses an excavation vertical frame sling cart which comprises a cart body, a guide rail, a vertical frame bearing trolley, a telescopic platform, a jacking mechanism and a hoisting device. The telescopic platform is installed at the upper end of the cart body in a telescopic mode and is connected with a first telescopic drive mechanism for driving the telescopic platform to be telescopic; the jacking mechanism is connected with the telescopic platform and used for jacking a vertical frame on the upper portion of the jacking mechanism; the hoisting device is used for hoistingand conveying the vertical frame to the vertical frame bearing trolley; the vertical frame bearing trolley is installed on the guide rail and can transversely and horizontally move and convey the vertical frame along the guide rail; the vertical frame bearing trolley is connected with a horizontal movement drive mechanism; and the horizontal movement drive mechanism can drive the vertical frame onthe vertical frame bearing trolley to transversely move and convey the vertical frame to the upper portion of the jacking mechanism in a retracting state. The excavation vertical frame sling cart ishigh in design integration degree, mounting automatic degree and vertical frame erecting efficiency, reduces manual operation and reduces potential safety hazards of construction.

The invention discloses an excavation vertical frame lifting and placing vehicle. The excavation vertical frame lifting and placing vehicle comprises a vehicle main body, guide rails, vertical frame bearing trolleys and lifting devices; a stretchable platform is installed at the upper end of the vehicle main body in a stretchable mode, and a jacking mechanism is connected to the stretchable platform; and the lifting devices are used for lifting a vertical frame and sending the lifting frame to the vertical frame bearing trolleys; the vertical frame bearing trolleys are installed on the guide rails and can transversely move so as to convey the vertical frame along the guide rails, the vertical frame bearing trolleys are connected with translation driving mechanisms, and the translation driving mechanisms can drive the vertical frame placed on the vertical frame bearing trolleys to transversely move and can convey the vertical frame to the position above the jacking mechanism in the retraction state. The excavation vertical frame lifting and placing vehicle has the advantages that the integration degree is high, the installation automation degree is high, the erection efficiency of the vertical frame is high, the manual operation is reduced, and the potential safety hazard of construction is reduced.

A diagonal bracing and pulling device used for supporting of a cast-in-place concrete wall formwork is composed of a diagonal bracing and pulling rod, a lower fixing piece and an upper connecting piece. The diagonal bracing and pulling rod is provided with a middle rod body, the upper end of the middle rod body is connected with an upper nut, and an upper lead screw is assembled on the upper nut and connected with the upper connecting piece in a hinged mode; and the lower end of the middle rod body is connected with a lower nut, a lower lead screw is assembled on the lower nut and provided with a pulling hook, and a fastening nut is assembled at the lower lead screw. The lower fixing piece is provided with a U-shaped connecting ring with the forward arc-shaped end, the front portion of theU-shaped connecting ring upwarps by 45 degrees, the pulling hook is hung at the arc-shaped end of the U-shaped connecting ring in a hooked mode, and anchor bolt gaskets are arranged on the rear portion of the U-shaped connecting ring; the upper connecting piece is provided with a transverse back arris connecting piece, through pin holes are formed in two wing plates of the transverse back arris connecting piece, and lug plates are arranged on the outer side of a web plate of the transverse back arris connecting piece; and the upper lead screw is connected with the upper connecting piece through a pin shaft in a hinged mode. The diagonal bracing pulling device is simple in structure and convenient to use, and the safe and reliable performance of supporting and connecting is good.

The invention discloses an integrated construction method for main building body and indoor and outdoor decoration, and belongs to the technical field of building decoration. The method comprises thefollowing steps that the foundation of a building is constructed, an embedded part is installed, and the foundation extends to a standard layer; according to the building purpose, a plurality of required integrated modules aee designed, and the integrated modules are machined according to a drawing in a factory; the factory conducts trial assembling, and then the construction base conducts splicedinstallment; after the integrated modules are calibrated, doors, windows and bottom plates are installed. According to the integrated construction method for main building body and indoor and outdoordecoration, modular construction and installment can be conducted on buildings, indoor and outdoor decoration and building construction can be conducted at the same time through a predesign, and morethan half of the construction period is shortened.

The invention discloses a track laying machine used for a coal mine working. The track laying machine comprises a storage battery electric locomotive and a cross beam which is arranged above the storage battery electric locomotive and is fixed relative to the storage battery electric locomotive, wherein the cross beam is provided with a walking operating vehicle used for realizing hosting and track laying; the walking operating vehicle comprises a longitudinal walking unit which can carry out longitudinal movement relative to the cross beam, and a lateral walking unit which can carry out lateral movement relative to the longitudinal walking unit; and the lower side of the lateral walking unit is provided with a vertical hoisting unit used for carrying out loading and unloading as well as vertical movement. The invention also discloses a track laying method for the track laying machine used for the coal mine working. By use of the above track laying machine used for the coal mine working, through the walking operating vehicle, the mechanical track laying of the coal mine working can be realized, a phenomenon that track materials are manually carried for transportation or track materials are transported through a belt transportation machine is replaced, construction working procedures are reduced, construction input and construction cost are lowered, and construction potential safety hazards are reduced.

The invention provides a channel box defect repairing method, and belongs to the technical field of drainage channel boxes. The channel box defect repairing method comprises the steps that reinforcingribs are fixedly connected to the inner wall of a channel box; a steel plate box body is prefabricated, and a plurality of grouting holes are formed in the steel plate box body; the steel plate box body is installed in the channel box, and a repairing gap is formed between the outer side face of the steel plate box body and the channel box; the outer side face of the steel plate box body is fixedly connected with the reinforcing ribs; concrete grout is injected into the repairing gap through the grouting holes; the grouting holes are blocked; and the inner wall of the steel plate box body issubjected to anti-corrosion treatment. According to the channel box defect repairing method, in the abovementioned way, the steel plate box body is installed in the channel box, the reinforcing ribs are arranged between the channel box and the steel plate box body, concrete is poured to achieve repairing of the channel box and fixed connection between the channel box and the steel plate box body,grooving repairing does not need to be conducted on the ground, the channel box repairing progress is accelerated, and the construction potential safety hazards are reduced.

The invention discloses a construction method for reinforcing the foundation of a soft soil area. The construction method comprises the following steps of: preparing a construction facility; preparing a construction plant; measuring and lofting and the like. The construction method is a safe, economic and efficient construction method for reinforcing the foundation of the soft soil area. The method is high in on-site operability, and can be popularized easily; moreover, by the method, the construction safety and the construction quality of foundation reinforcement of a filling area beside an operation line of the soft soil area are guaranteed.

The invention discloses design of hoisting a slag hopper by utilizing a shaft gantry. According to the design, a slag hopper of the dimension (3m*2.5m*2m) is produced from a steel plate of more than 2 cm in thickness in a welding manner; double doors are arranged oppositely at the bottom of the slag hopper; two groups of fixed pulleys used for direction control are mounted on the side surfaces of hopper doors; steel wire ropes used for controlling the hopper doors are hung by travelling gantry crane secondary hooks; after the hopper doors are closed, both primary hooks and the secondary hooks are subjected to hoisting at the same time; after the slag hopper is lifted out of a drilled shaft and conveyed to a slag disposal pit, the hopper doors are opened by lowering the secondary hooks, so that slag is discharged to the slag disposal pit; and then, the hopper doors are closed by lifting the secondary hooks. The design provided by the invention is an improvement in the conventional slag hopper for drilled shaft slag removal, and has the advantages that the work efficiency of a drilled shaft gantry crane is improved during slag removal; the quantity of construction workers, the construction cost and the hidden danger in construction are reduced; and the construction progress is strongly guaranteed.

The invention relates to the technical field of construction safety, and discloses a wearable device applicable to the construction site. The wearable device comprises a danger source detection module, a control module and an early warning module, wherein the danger source detection module is used for detecting a starting signal in real time and sending the detected starting signal to the controlmodule; the starting signal is a signal sent by equipment in the construction site within a preset range when being started; the control module is used for sending an early warning signal to the earlywarning module when receiving the starting signal; and the early warning module is used for sending an alarm when receiving the early warning signal. The wearable device disclosed by the embodiment of the invention can give an alarm when a wearer gets close to the started equipment in the construction site so as to remind the wearer, thereby enabling the wearer to timely discover the danger source, guaranteeing the safety of the construction personnel, reducing the construction potential safety hazards in the construction site, and thus reducing the occurrence probability of accidents.