32results about How to "Save engineering expenses" patented technology

The invention relates to a cementing double-R groove-shaped lead stringing pulley with a double-R groove-shaped pulley groove selection, which is composed of two types of circular arc with different radii. One circular-arc-shaped groove with a short radius is formed at the bottom of the arc-shaped groove with a large radius and a cementing layer is arranged on at least the internal surface of the arc-shaped groove with small radius. Cementing plays a certain role in protecting the lead. The service life of the lead stringing pulley is prolonged. The radii of the big and the small circular arcs are respectively matched with the radii of a connecting pipe protecting device and the lead, thereby enlarging the contact area between the lead and the pulley groove of the lead stringing pulley when the lead passes through a connecting pipe protecting device, and reducing the wear of the lead. At the same time, the small arc-shaped groove has a depth enough to avoid construction accident caused by the lead which leaves out of the pulley groove of the pulley during the stringing process. Therefore, the lead stringing pulley has the advantages that the wear of the lead is reduced, the service life of the lead stringing pulley is prolonged, the safety of stringing construction is improved and the maintenance cost of engineering is reduced.

The invention discloses a construction method capable of replacing steel support substitution by full space supports. The construction method particularly comprises the following steps: (1) after the bottom plate construction of a subway station main body structure is finished, constructing side walls at the bottom, utilizing side pressure generated during concrete pouring and auxiliary providing a fastener to guarantee that the horizontal direction of the full space supports to be closely attached and propped tightly, and pouring the side walls and middle plates simultaneously; (3) after the bottom plate and the side walls under the steel support substitution are poured and reach the strength, continuously erecting the full space supports; (3) after erecting the full space supports in the step (2), disassembling third steel supports on part of the full space supports, continuously erecting the full space supports and constructing the middle plates and the side walls of the main body structure; and (4) after the construction of the main body structure is finished and the strength reaches the design requirement, disassembling the full space supports. According to the construction method, the procedures can be simplified, the work efficiency can be improved, the construction period can be shortened, construction safety and convenience are improved, the construction cost is saved and the construction efficiency is improved.

The invention provides a dike dam riprap density measuring method based on image analysis, and the method is characterized in that a two-dimensional image of a riprap accumulation body after being leveled is photographed, a gray processing intermittency detection segmentation technology is adopted for processing the two-dimensional image, the two-dimensional density of the riprap is calculated through the image analysis, and the density of a three-dimensional body of the riprap is calculated by analyzing the two-dimensional density. Due to the adoption of the method, the density of the riprap with the granularity being more than that of an ordinary stone and the density of the riprap with the rough surface difficultly placed with an instrument can be measured, the damage to the riprap dam can be avoided by utilizing the image analysis method, a real nondestructive measurement method is realized, the test cost is low, engineering expense can be saved, and the method can be popularized and used in the dike dam riprap projects.

The invention discloses a large-span courtyard side wall sliding rail hanging basket with a roof and a construction method thereof. The sliding rail hanging basket comprises a guide rail, a hanging piece, a sliding mechanism, a hanging rope and a hanging platform, wherein the guide rail is an I-shaped steel beam and is installed below a reinforced concrete top plate through a fastening installation piece, the hanging piece is installed on the lower side of the guide rail and is in sliding connection with the guide rail through the sliding mechanism, one end of the hanging rope is connected with a hanging hook, the other end of the hanging rope is connected with the hanging platform through a lifting motor, the hanging platform is a telescopic hanging basket and comprises a main basket body and auxiliary basket bodies which are symmetrically arranged on the two sides of the main basket body through telescopic adjusting mechanisms, and damping mechanisms are arranged at the bottoms of the main basket body and the auxiliary basket bodies. During use, the sliding rail hanging basket is used for construction, the problem that a large-span courtyard side wall with the roof is difficult to decorate is effectively solved, the sliding rail hanging basket has the characteristics of convenience and rapidity in construction and easiness in operation by workers, tracking inspection is conducted at any time in the using process, safety accidents are avoided, and the engineering cost is reduced.

The invention discloses an on-site grouting system and a method for reinforcing flocculated sludge by combining vacuum preloading and grouting. The on-site grouting system is composed of an engineering mechanical vehicle, a grouting pipe, a vertical drainage plate, a control electric box, a foam plate, a flocculant pump, a vacuum pump and some conveying pipelines. According to the method for reinforcing the flocculated sludge by combining vacuum preloading and grouting, lime pipe grouting is used as a main process, traditional vacuum preloading is improved through an electrical control technology, modern mechanical equipment is adopted for construction, and therefore, the high efficiency and refinement of construction are achieved, the construction process is simplified, manpower participation is reduced, the safety coefficient of labor is increased, and the working efficiency is greatly improved; and the requirement of traditional vacuum preloading on a site is reduced through a lime grouting mode, the flocculation effect in a soil body is improved, the application range of vacuum preloading is widened, the flocculation effect in the soil body is improved, and the construction period is greatly shortened.

The invention discloses umbrella type platform static load test equipment and relates to the field of engineering machinery processing and manufacturing. The umbrella type platform static load test equipment comprises a main beam (1), pull rods (2), auxiliary beams (3), supports (4) and joist steel (5), wherein the main beam (1) is formed by individual circular steel cylinders (1-1) which are vertically and mutually superposed and fixed; a clamping cap (1-2) is fixed at the lowest end of the main beam (1); one ends of the auxiliary beams (3) are fixed with the clamping cap (1-2), stretches towards all around with a same angle with the clamping cap (1-2) as the center of a circle and fixedly connected with the main beam (1) through the pull rods (2); the supports (4) are uniformly arranged at two sides of each auxiliary beam (3); and two ends of the joist steel (5) are placed on the corresponding supports (4). The umbrella type platform static load test equipment has the advantages that the work efficiency is increased; the work time is saved; and the engineering expense is saved to a large extent while the potential safety hazard in operation process is greatly reduced.

The invention discloses a hoisting method using three traveling cranes with unequal loads. The three traveling cranes with unequal loads and two girders are taken as hoisting appliances, wherein the hoisting points at the lower ends of the first girder and the second girder are designed according to the rated loads of the traveling cranes and the weight of a hoisted heavy article, and the load percent borne by the three traveling cranes can be required maximumly, so that the safety of hoisting is ensured. Meanwhile, the construction cost is saved and the construction time is shortened.

The invention discloses a method for jointly decorating maintenance storehouses and installing and constructing pipelines by the aid of movable scaffolds. The method includes constructing first and second inspection pits in the built storehouses; filling the peripheries of the first and second inspection pits with earth in the storehouses; laying two guide rails on the backfilled earth on two sides of each of the first and second inspection pits, sequentially erecting the first, second, third and fourth scaffolds on the guide rail on the outer side of an end of each of the first and second inspection pits, carrying out ceiling plastering, putty applying and paint coating on the scaffolds, and installing the various pipelines, lamps, the firefighting pipelines and electrical equipment on the scaffolds until complete decorating and pipeline installing and constructing procedures are completed in the storehouses. Rollers are respectively installed at the bottoms of the first, second, third and fourth scaffolds. The method has the advantages that indoor ground structural engineering and overhead pipeline and equipment installation engineering such as ceiling decoration engineering, electrical installation engineering, water supply and drainage engineering, firefighting engineering, heating and ventilation engineering can be sequentially constructed in an assembly line manner, accordingly, various construction tasks in profession can be quickly completed, the construction periods can be greatly shortened, and effects of yielding twice the result with half the effort can be realized.

The invention belongs to the technical field of building construction, and discloses a reinforcing steel bar sleeve grouting device. The reinforcing steel bar sleeve grouting device comprises a grouting pipe plug, wherein a non-return structure is arranged on the inner wall of the grouting pipe plug, when grouting equipment is used for grouting a reinforcing steel bar sleeve, the non-return structure is in an open state, so that concrete slurry in the grouting equipment smoothly passes through an inner cavity of the grouting pipe plug, concrete slurry can entering the reinforcing steel bar sleeve, when the reinforcing steel bar sleeve is filled with concrete slurry, the grouting end of the grouting equipment is moved away from the grouting pipe plug, at the moment, the non-return structure automatically recovers to the closed state, so that the concrete slurry in the reinforcing steel bar sleeve is prevented from flowing back and leaking through the inner cavity of the grouting pipe plug, it is guaranteed that the compactness of the slurry in the reinforcing steel bar sleeve is good, the connecting strength between the components is effectively improved, and the building construction quality and the safety in the building use process are ensured. The non-return structure can timely block the grouting channel after the grouting is stopped, a wooden plug does not need to be additionally inserted or a closable valve does not need to be arranged, the construction process is simplified, and the project cost is reduced.

The invention provides a construction method of a water sealing system of a deep foundation. The construction method comprises the following steps: 1) constructing continuous piles or walls at the periphery of the deep foundation to be constructed, wherein the depth of the continuous piles or walls is not less than that of the deep foundation to be constructed; 2) continuously performing the operation in step 1) to form an outer closed circle around the deep foundation to be constructed through the continuous piles or walls; 3) reinforcing earth below the deep foundation to be constructed within the closed circle in a filler tamping and compacting and/ or injecting and grouting manner; 4) continuously performing the operation in step 3) until all the soil in the closed circle is reinforced and a bottom closed layer is formed, wherein the bottom closed layer and the outer closed circle form a barrel-shaped water sealing system which encircles the deep foundation to be constructed; and 5) performing dewatering and earth excavating to form the deep foundation. With the adoption of the method, the formed water sealing system is stable in structure, and good in water insulation effect; large-area and long-time dewatering is avoided; the natural soil is fully utilized in the construction; the method is high in efficiency, low in cost, environmentally friendly, and free from pollution.

The invention relates to a device for braking a rail vehicle, comprising a braking element that can be forced against a wheel. The invention is characterized in that the wheel comprises a surface area (6) which is used as a friction ring and against which the braking element can be forced.

The invention discloses a cable snakelike bending machine. The cable snakelike bending machine comprises a back shore, a stress supporting tool, a pressure sensor, a jacking mechanism, a rack mechanism and a bending roller which are sequentially connected from head to tail, wherein the jacking mechanism comprises a lead screw, a turbine mechanism, a hand-cranking wheel and a rocking wheel input shaft; the lead screw is vertically arranged in the turbine mechanism in a penetrating mode, the rocking wheel wheel input shaft is transversely arranged in the turbine mechanism, and the lead screw and the rocking wheel input shaft are meshed together through a gear; the hand-cranking wheel is located on the outer side of the turbine mechanism and connected with the rocking wheel input shaft; and the upper end of the lead screw is connected with the pressure sensor, and the lower end of the lead screw extends into the rack mechanism. According to the method, the working efficiency is effectively improved, and the project expenditure is reduced; and the cable laying quality is improved, and the S-shaped laying of the cable is ensured to meet the technical requirements. According to the invention, the pressure borne by the cable and the snake-shaped wave amplitude during bending can be accurately displayed, the construction standard can be conveniently formulated, and the installation precision and the maintenance convenience are also guaranteed.

The invention discloses a connecting and fixing device for channel steel. The connecting and fixing device comprises a first panel and a second panel. Supporting plates are installed on the top of the first panel and the top of the second panel correspondingly. The supporting plates are movably connected through a rotating shaft. Buffer pads are symmetrically installed on the tops of the supporting plates. Buffer springs are installed on the tops of the buffer pads. Strength bolts are installed on the tops of the buffer springs. The first panel and the second panel are fixedly connected with the supporting plates through the strength bolts correspondingly. A first connection block is installed on one side of the front surface of the first panel. According to the connecting and fixing device for the channel steel, by arranging the first connection block, a second connection block, a position clamping device and a clamping rod, the first panel and the second panel can be stably connected, folding of the channel steel is facilitated, the use capacity of the channel steel is effectively improved, meanwhile, transportation is facilitated for people, the work time of work staff is shortened, and use is facilitated for people.

The invention relates to a method for building and constructing the facilities of a road tunnel and a line. A road, a railroad and a line are constructed underground, the construction of the existing viaducts is totally changed into underground construction, and ground ditching expressway implementation is carried out; and the construction of expressway and railroads is totally changed into underground construction, a point type underground drainage channel is arranged below a roadbed, high voltage line facility devices are arranged on two sides of the tunnel, illuminating line devices are arranged above the tunnel, a tunnel flood prevention water return bend is arranged at the place 20-200 meters from the access of the tunnel, a vehicle entrance is arranged in the tunnel, and a fire control passage and a safety exit are arranged every three kilometers in the tunnel. The existing roadbed of the tunnel road constructed according to the method for building and constructing the facilities of a road tunnel and a line is changed into fertile farmland, the land is restored, the engineering cost is saved by 30 percent above, and the method disclosed by the invention brings about a big road transformation due to no occupation of land.

The invention discloses an FPGA (Field Programmable Gate Array) reconfigurable resource non-rectangular layout method based on a cutting method. According to the method, firstly, n logic function layout requiring region sets N are defined; a cutting range lambda is determined; all points in the lambda are traversed; the protection of each point in the horizontal and vertical directions is calculated; the rectangle is divided into four parts to be cut so as to obtain a layout requiring logic function non-rectangular description model; then, FPGA chip reconfigurable resources are divided according to lines according to the layout requiring logic function non-rectangular description model; and the reconfigurable resource non-rectangular layout method is defined through chip reconfigurable resource data preprocessing and logic function layout requiring region data preprocessing. A region division method is used, so that the occurrence of an extreme shape model is effectively avoided; the layout failure rate is reduced; through the setting of a cutting range threshold value and the introduction of data preprocessing before the layout, the useless workload is effectively avoided; the time consumption of a layout algorithm is reduced; and the work expenditure of an embedded system is further reduced.

The invention discloses a wind-proof and fire-proof device for an external rail bender under a vertical shaft of a logistics track. The wind-proof and fire-proof device includes vertical fixed rails corresponding to each floor arranged in the shaft and horizontal fixed rails arranged at the bottom of each floor, and a 90-degree movable bending rail arranged in the shaft of each corresponding floorcorresponding to the horizontal fixed rail, and the front upper end of the movable bending rail is connected with the horizontal fixed rail in the window hole of the front wall of the vertical shaft,and the rear lower end is hinged with the upper end of the vertical fixed rail, and the vertical shaft is provided with an overturning mechanism for overturning the movable bending rail, and the connecting end of the movable bending rail and the horizontal fixed rail is provided with a support mechanism; smoke prevention and fire prevention flat windows with closed windows are arranged in the vertical shaft; windshields are provided in the window openings above the horizontally fixed rails. The invention changes the scheme of installing the rail breaker in the indoor into installing the railbreaker in the vertical shaft, which not only simplifies the indoor environment but also reduces the space of the vertical shaft and the engineering cost of the building.

The invention discloses a double-wire welding machine in the technical field of welding equipment. The double-wire welding machine comprises a base and an upper platform, wherein the base slides alongguide rails front and back, a first welding wire coil is arranged on the base, a second welding wire coil is fixed on the upper platform, an adjusting mechanism is arranged on an adjusting table extending outwards from the side surface of the upper platform and drives a welding flux storage tank to slide along the adjusting table left and right, an adjusting stand column drives the welding flux storage tank to slide up and down, the lower end of the welding flux storage tank is connected with a first welding flux guide pipe, the upper end of the welding flux storage tank is connected with a second welding flux guide pipe, and welding heads are arranged at the end parts of the two welding flux guide pipes. According to the double-wire welding machine, by means of front-and-back movement ofthe base and left-and-right and up-and-down movement of the welding adjusting stand column, 360-degree adjustment of the welding position is realized, so that the adjustable range of the whole double-wire welding machine is increased, besides, the accurate control for the welding position is guaranteed, and welding quality of the whole product is ensured.