59results about How to "Reduce the risk of construction" patented technology

The invention discloses an overhanging type movable blanking platform for construction technology. The overhanging type movable blanking platform structurally comprises protection baffle plates, a bearing frame, movable cross beams, pulleys, sliding rails, an automatic discharging device, a movable inclined plate, fixed cross beams, support upright posts, underboardings, reinforcement connecting rods and lateral protection plates, wherein the automatic discharging device comprises a fixed inner plate, a supporting point, a discharging plate, a lifting mechanism, a right-sided support plate, abalance mechanism, a fixed base, a power mechanism, a transmission mechanism and a fixed inner plate support rod. According to the overhanging type movable blanking platform for construction technology disclosed by the invention, the lifting mechanism, the balance mechanism, the power mechanism and the transmission mechanism are arranged in the automatic discharging device, and automatic discharging can be realized when cargoes are fallen into a bearing table, the problem of time consumption and labor consumption during manual transportation and blanking is solved, the construction difficultyis reduced, and the construction efficiency is improved.

The invention relates to a high-rise cantilever structure formwork erecting system and a construction method. The high-rise cantilever structure formwork erecting system is characterized in that an inclined strut pre-buried steel plate is pre-buried in a lower-layer shear wall, an inclined strut is installed on the inclined strut pre-buried steel plate, a cantilever I-shaped steel is installed ina reserved hole in the shear wall on the layer, and a cantilever area formwork support is arranged on the cantilever I-shaped steel in a supported mode. The invention further provides a construction method during horizontal pipeline wall penetrating. The construction method comprises the construction steps that (1) the inclined strut pre-buried steel plate is manufactured; (2) pre-buried parts arepre-buried; (3) the reserved hole is reserved; (4) a groove-shaped prefabricated base plate is mounted; (5) a pre-welding connection positioning rod is installed; (6) the cantilever I-shaped steel ismounted; (7) an I-shaped steel inclined support is mounted; (8) supports in a cantilever area and a non-cantilever area are erected; (9) installing and pre-pressing are carried out on formworks; (10)a cantilever structure is mounted to integrally form a reinforcement cage; (11) I-shaped steel wire ropes are pulled; and (12) the reserved hole is plugged. According to the high-rise cantilever structure formwork erecting system and the construction method, construction is convenient, the construction quality and the construction safety of a cantilever slab can be improved, and good economic andtechnical benefits are achieved.

The invention provides a plant growth regulator and a preparation method and application thereof as well as a prevention and control method for tree obstacles of a power grid line gallery, and relatesto the technical field of plant growth regulators. The plant growth regulator is prepared by compounding uniconazole, paclobutrazol, chlormequat, maleic hydrazide, choline chloride, chitosan, ethephon, mepiquat chloride, 6-benzylaminopurine, brassinolide and diethylaminoethyl hexanoate, so that the aims of changing a high-coarse growth conversion relation of plants in various angles, acceleratingthe ripening and ageing of the plants and comprehensively realizing regulation and control of the plants are realized. According to the prevention and control method for the tree obstacles of the power grid line gallery, the plant growth regulator is applied and the growth height of gallery trees is reduced so that the aim of preventing and controlling the tree obstacles of the power grid line gallery is realized. According to the method provided by the invention, the problem in the prior art that a method for effectively controlling the growth of the trees on an overhead power transmission line gallery is lacked is alleviated, and the aims that an ecological landscape and benefits of forest farmers are not damaged and tree obstacle threats are not caused are realized.

The invention provides a mortise-tenon connection structure of fabricated beam-column joints. The connection mode comprehensively considers the connection between upper columns and lower columns and the connection between beams and columns. Reserved chase mortises are formed in the upper columns, the lower columns, cross beams and longitudinal beams. During construction, secondary joint pouring for fabricated wet process connection is avoided, and the use of bolts and welding joints for dry-type joint connection is avoided. During construction, a traditional method is changed, the beams and columns are spliced through the reserved tenons and chase mortises of the beams and the columns, and the structure is assembled and formed at a time by pouring fine stone concrete into small holes and other processes. The mechanical properties of the joints is ensured, at the same time, the environmental pollution caused by the secondary pouring is avoided, the construction efficiency is improved, and the mortise-tenon connection structure of the fabricated beam-column joints is quite suitable for the development prospects of the fabricated type.

The invention relates to an intelligent spraying device. The intelligent spraying device comprises a control portion and a spraying portion which are connected with each other. A control portion rolling wheel is arranged at the bottom of the control portion. A spraying portion rolling wheel is arranged at the bottom of the spraying portion. The spraying portion comprises a single-layer arc guide rail and a double-layer gear arc guide rail which are arranged in parallel. Multiple evenly-arranged connecting transverse ladders are arranged between the single-layer arc guide rail and the double-layer gear arc guide rail. A spraying device is in sliding connection to the double-layer gear arc guide rail. The intelligent spraying device is uniform in spraying, high in spraying efficiency and easy and convenient to operate, and the labor cost and construction dangerousness can be reduced.

The invention relates to a concrete thermal insulation cover for the winter construction of a pier column. The concrete thermal insulation cover is used for circumferentially wrapping the poured construction section of the pier column and has a rectangular shape; one side of the concrete thermal insulation cover, which is contacted with the pier column, is an inner side; the concrete thermal insulation cover consists of a plastic film layer, a first covering cloth layer, a rock wool layer and a second covering cloth layer from the inner side to the outer side in turn; rubber band bundles for hermetically tightening and winding the upper end and the lower end on the outer side of the poured construction section are respectively arranged at the upper end and the lower end of the rectangular concrete thermal insulation cover along the edge; a plurality of lifting holes are formed in the edge of the upper end of the concrete thermal insulation cover; and each lifting hole is connected with a template of a construction section which is to be poured and is positioned above the concrete thermal insulation cover through a connecting member. The concrete thermal insulation cover can meet the requirement on concrete thermal insulation during the winter construction of the pier column, an operation process can be simplified, manual high-altitude operation is avoided, construction difficulty and risk are reduced, and construction safety and convenience are achieved.

The invention discloses an anti-falling protection device capable of horizontally moving along with a worker in building construction. The anti-falling protection device structurally comprises a resetswitch, a rod penetrating device, a fixing ring, a nylon cord, an anti-falling device, a steel wire rope, a limiting device and a hook; the reset switch is installed at the upper end of the rod penetrating device, the rod penetrating device is connected with the anti-falling device through the nylon cord, the hook is installed below the anti-falling device, and the anti-falling device is connected with the hook through the steel wire rope. The anti-falling protection device has the beneficial effects that according to the characteristics that only horizontal separation can happen and verticalseparation cannot happen through an engaged plate, the anti-falling device penetrates a scaffold supporting rod, the condition that a constructor needs to separate the upper end of the anti-falling protection device from a scaffold in the horizontal moving process is avoided, the anti-falling protection device and the scaffold can be in the connected state all the time, the construction risks arereduced, and the safety of the constructor is protected.

The invention discloses an adjustable cross arm electric power steel pipe rod. A cross arm, a cross arm indented fixing hoop, a cross arm fixing indented inner hoop, a cross arm fixing clamping groove steel plate, a cross arm fixing clamping base, a fixing bolt and a cross arm fixing indented inner hoop locking clamping groove are sequentially mounted and connected with an electric power steel pipe rod initially hoisted and standing, wherein the cross arm indented fixing hoop, the cross arm fixing indented inner hoop, the cross arm fixing indented inner hoop locking clamping groove and the cross arm are sequentially mounted in a thinner position at the top end of the electric power steel pipe rod body, so as to form a small diameter cross arm mounting component; the cross arm fixing clamping groove steel plate, the cross arm fixing clamping base, the cross arm and the fixing bolt are sequentially mounted in a larger diameter position of the electric power steel pipe rod body, so as to form a large diameter cross arm mounting component. When the adjustable cross arm electric power steel pipe rod is hoisted, the direction of the rod body is not required to be deliberately noticed, the adjustable cross arm electric power steel pipe rod can be hoisted in any direction, and the directional mounting of the cross arm is accomplished through the adjustable cross arm components.

The invention relates to a construction method for paving a road trough micro-communication pipeline by utilizing a city road, belonging to the optical fiber cable transmission technology field. A trough line is firstly drawn according to a set planning or a designed router, a road surface is cut along the drawn trough line, and a trough is dug out; a four-way or three-way micro-pipe is embedded at one end of the trough, and a micro-pipe joint box is embedded at the other end of the trough which is close to a manhole or a connection box; a pipe bracket is paved at the bottom part of the trough, a micro-cable sub-pipe is distributed on the pipe bracket, the both ends of the micro-cable sub-pipe are extended into the micro-pipe joint box and a micro-pipe branch box; an upper pipe cover is arranged above the sub-pipe, a cover board is finally covered on the pipe cover; and a super early strength repairing agent is poured into the trough. The construction method has the advantages that: the application range is wide, the construction method can be accessed to the tail end of a metropoliatan area network for communicating the prior communication pipeline and a small-diameter rain (polluted) water pipeline, thereby building the supplement for a micro-pipeline system. The advantage of the network capacity expansion is obvious, when in fault of the optical fiber cable, the rush repair is easy, and the recovery of the communication is fast. The construction is flexible and not limited by an underground pipe network, and the construction risk is very small.

The invention relates to the field of oilfield chemistry, in particular to low-temperature expandable graphite suitable for steam injection channeling sealing of heavy oil reservoirs and a preparationmethod and application of the low-temperature expandable graphite. The preparation method of the low-temperature expandable graphite is characterized by comprising the step of carrying out a contactreaction on a compound shown in a formula (1), an oxidant, acid, alkali metal salt and graphite. The low-temperature expandable graphite system has the advantages of being high in expansion rate, goodin thermal stability, capable of being carried into a stratum and flexible in graphite, the steam channeling sealing effect can be improved, the effective service life of a channeling sealing agent can be prolonged, the treatment cost can be reduced, and efficient production of crude oil can be achieved.

The invention relates to a bidirectional rotary cutter head of a rock boring machine and a bidirectional rotary boring method. The bidirectional rotary cutter head of the rock boring machine comprises a cutter head body, hobbing cutters, slag outlets, grids, buckets, clockwise rotation blind plates, counterclockwise rotation blind plates and high-strength connecting bolts. The counterclockwise rotation blind plates are arranged on the clockwise side of the corresponding buckets. The clockwise rotation blind plates are arranged on the counterclockwise sides of the corresponding buckets. The counterclockwise rotation blind plates and the clockwise rotation blind plates can be used for covering the slag outlets on the counterclockwise sides and the clockwise sides of the corresponding buckets correspondingly. By adoption of the bidirectional rotary cutter head, the service life of the hobbing cutters can be prolonged; and in addition, eccentric rotation or tipping of a shield connected with the cutter head can be avoided through cutter head bidirectional rotation achieved by switching the rotation direction of the cutter head, the construction difficulty and dangerousness are lowered, and the defects that a conventional hard rock cutter head does not have an automatic deflection-preventing function, the service life of a main drive gear pair is short, and a cutter bearing and a main drive bearing are prone to fatigue wear are overcome.

The invention relates to a method for positioning a bottom section and a broadside section on a heavy lift vessel, which comprises the following steps of: detecting data of the bottom section and the broadside section of the heavy lift vessel by erecting a total station, comparing the detected data with a theoretical value to obtain a three-dimensional change reference value, and obtaining field positioning data of the bottom section and the broadside section; measuring equipment is fully utilized to be combined with three-dimensional analysis software to achieve detection of positioning data of the bottom and the broadside of the heavy lift vessel, the total station is easy and convenient to operate and high in measuring precision, field point position collection can be conducted on bottom data and broadside segments through the total station, and after the collected data are matched with theoretical data of the bottom and the broadside respectively, the positioning data of the bottom and the broadside can be obtained. Therefore, the change conditions of the bottom data and the broadside data can be directly judged on site. According to the method, the positioning precision is high, the change condition of bottom and broadside data can be directly judged on site, the labor intensity of constructors is reduced, and the safety coefficient of the constructors is increased.

The invention relates to the field of engineering equipment, in particular to a drill rod disassembly and assembly auxiliary device and drilling equipment. According to the main technical scheme, the drill rod disassembly and assembly auxiliary device comprises a mounting base and a clamping jaw, the mounting base is used for being connected with a guide column, the clamping jaw is movably connected with the mounting base, a first driving assembly used for driving the clamping jaw to move is arranged between the mounting base and the clamping jaw, the clamping jaw is provided with a second driving assembly, and the second driving assembly is used for controlling opening and closing of the clamping jaw. By means of the clamping jaw with maneuverability, the position of a drill rod can be adjusted, so that alignment connection between the drill rod and a power head is facilitated, the step of manual adjustment is omitted, and then the construction difficulty and the danger coefficient are reduced.

The invention provides a method for mounting a drum framework of a drum strainer in order to solve the problems of high mounting difficulty, low safety factor, low operation efficiency and the like of existing mounting methods. The method includes: sequentially mounting main spokes, connecting each two adjacent main spokes by connectors; assembling an auxiliary spoke group; mounting main cross beams on the main spokes and mounting the auxiliary spoke group on the connectors; using circumferential connection angles to connect all main and auxiliary cross beams; annularly mounting gear ring fixing grooves to the middles of the top ends of the cross beams on the main and auxiliary spokes, and fixing gear rings in the gear ring fixing grooves; circularly fixing a frame on each of two sides of each main cross beam and auxiliary cross beam. Owing to the method for mounting the drum framework of the drum strainer, difficulty in setting up of an auxiliary scaffold is lowered, scaffold climbing frequency is low, and accordingly personal safety of constructors can be guaranteed. Further, the mounting way is easy to control, manpower and material resources are saved, and operating efficiency is improved.

The invention discloses a flowerpot capable of achieving classified planting and automatically adjusting moisture and relates to plant growing and greening tools. The flowerpot capable of achieving classified planting and automatically adjusting the moisture comprises a lower pot body and an upper pot body, wherein the lower pot body is detachably connected with the upper pot body. Notches are formed in the front wall of the lower pot body, water storage chambers are arranged on the two sides of the lower pot body, a primary water storage tank is arranged at the bottom of an inner cavity of the lower pot body, the primary water storage tank is provided with a drainage groove, a primary water absorption strip is arranged between each water storage chamber and the primary water storage tank, a first carrying plate is arranged above the primary water storage tank, through hole arrays are formed in the first carrying plate, a first planting cavity is formed between the first carrying plate and the peripheral wall of the lower pot body, and a secondary water absorption strip is arranged between the first planting cavity and the primary water storage tank; notches are formed in the front wall of the upper pot body, a secondary water storage tank is arranged at the bottom of an inner cavity of the upper pot body, a third-level water absorption strip is arranged between the secondary water storage tank and each water storage chamber, the secondary water storage tank is provided with a drainage groove, a second carrying plate is arranged above the secondary water storage tank, through hole arrays are formed in the second carrying plate, a second planting cavity is formed between the second carrying plate and the peripheral wall of the upper pot body, and a fourth-level water absorption strip is arranged between the second planting cavity and the secondary water storage tank.