65results about How to "Save hoisting costs" patented technology

The present invention discloses a tail device and a tail dragging method. The tail device comprises: a tail end row which at least comprises a boom system, a travelling mechanism and a lifting mechanism, wherein the boom system is provided with a lifting mechanism and is supported on the travelling mechanism; and a tailstock which is used for being removably fixed to the lower part of a lifted device, and is provided with lifting holes. In the process of lifting the lifted device from the ground, the lifting mechanism is in hanging connection with the lifting holes, and the lifting holes are located at the end deviating from the ground. When the tail device is use for lifting a device, the center of gravity of the lifted device can be guaranteed to be always located below a connection line between the lifting point of main lifting equipment and the lifting point or the support point of the tail end row. The tail device has the advantages of good security, small weight borne by the tail end row, low lifting cost, etc.

The invention relates to a method for hoisting large scale equipment, in particular to a method for hoisting a large-tonnage pressing machine frame. The method comprises the following steps: derrick beams are arranged on the two side of the installation position of the pressing machine frame, a large scale hoisting device is arranged thereon, a sliding shaft and a falling shaft are arranged respectively in the front and the back of the pressing machine frame, the sliding shaft is arranged at the top of the pressing machine frame in the back, and the falling shaft is arranged at the bottom in the front, the sliding shaft is slid rotationally forwards on a slideway, the falling shaft rotationally falls down, until the pressing machine frame is upright, a hoisting point is changed at the position of the sliding shaft, and the installation is finished after the pressing machine frame falls down for a certain distance. Compared with the prior hoisting method, the method of the invention has the outstanding advantages as follows: the height of the derrick is reduced, so that all the work can be done in the installed workshop; the hoisting equipment in the workshop is fully utilized, so that the hoisting problems of all the hoisting equipment are solved and the hoisting cost of the prior art is saved; the construction period is shortened, and the safety is guaranteed; and the method is suitable for the hoisting installation exercises in narrow spaces or at high altitude, underground, and in other construction situations.

The invention relates to a rotary kiln barrel, in particular to an installation method of the rotary kiln barrel. A barrel connecting method without support comprises the following steps that barrels are divided into sections, and connecting points are positioned, namely, barrel rounds are divided into sections according to the number of installing draw-in blots and lap jointed plates, and welding positions of the draw-in bolts and the lap jointed plates are positioned; a draw-in bolt base is welded, the draw-in bole base is welded to one of two sections of barrels which need to be connected according to preset positions; after the barrels are hoisted and the two sections of the barrels are hoisted and abutted, the draw-in bolts are used for positioning the welding position of the other bolt base, and welding is conducted, then the draw-in bolts are fixed through the two bolt bases, the lap jointed plates are welded to the preset positions, and a single barrel is fully welded; installation is finished, the draw-in blots bear tension, the lap jointed plates bear shear force, and all the barrels of the rotary kiln are connected together. The barrel connecting method without the support does need to manufacture a steel support, and is economical, practical, convenient to achieve and efficient.

The invention provides a segmented mounting method for a square raw coal hopper. The segmented mounting method for the square raw coal hopper comprises the steps that the raw coal hopper is manufactured and combined in a segmented mode; corrosion prevention is conducted on the ground where the raw coal hopper is located in a segmented mode; the raw coal hopper is transported in a segmented mode; the raw coal hopper is hoisted in a segmented mode; and assembling is conducted. By adoption of the segmented mounting method for the square raw coal hopper, the high-altitude butt joint workload is greatly reduced, the working time is shortened, the number of all-round scaffolds required when a traditional single-segment construction scheme is adopted is reduced, the cost is reduced, and the construction efficiency is improved.

The invention provides an overall horizontal assembly method for a box-type steel arched girder. The method comprises the steps: firstly, dividing a single-truss box girder into a plurality of sections; then, manufacturing assembly jigs, and blanking all the sections; during the assembly of the box-type steel arched girder, firstly, laying high-side web plate units, and carrying out spot welding among all the high-side web plate units so as to achieve temporary fixation; lofting locating lines, corresponding to transverse partition plate units, on the located high-side web plate units, and locating, mounting and welding all the transverse partition plate units on the high-side web plate units; lofting locating lines, corresponding to the transverse partition plate units, on top plate units of the box girder, and locating, mounting and welding the transverse partition plate units; lofting locating lines, corresponding to the transverse partition plate units, on bottom plate units of the box girder, and carrying out locating, mounting, welding and fixing on the bottom plate units of the box girder and the transverse partition plate units; lofting locating lines, corresponding to the transverse partition plate units, the box girder top plate unit locating lines and the box girder bottom plate unit locating lines on low-side web plate units of the box girder, and locating, mounting and welding the low-side web plate units of the box girder. The method has the advantages that the overall size of the box girder and the accuracy of interface butting can be excellently guaranteed, the overall strength is high, and the stability is good.

The invention discloses a wind wheel hoisting tool. The wind wheel hoisting tool comprises a main hoisting beam with a plurality of slide wheel assemblies, a drive mechanism which is arranged on the main hoisting beam, and a supporting beam assembly, wherein a hanger assembly which is used for hoisting a wind wheel to realize mounting or dismounting the wind wheel is wound on any slide wheel assembly; the drive mechanism is connected to all hanger assemblies, and can provide drive force; and the supporting beam assembly is used for fixedly connecting a main hoisting beam to a fan main shaft positioned below the main hoisting beam to realize supporting the main hoisting beam, and can transmit gravity of the wind wheel to the fan main shaft. The wind wheel hoisting tool is fixedly mounted onthe fan main shaft, so that the wind wheel can be hoisted and dismounted without a hoist, and therefore, hoisting cost for large part replacement can be saved; and meanwhile, the tool can realize 90-degree turnover, in air, of the wind wheel, and also cancels a tailing crane.

The invention relates to the technical field of power cable production, in particular to a connecting structure and a manufacturing method of a composite polypropylene GHFB square high-voltage cable. According to the technical scheme, pipe material bodies are included, the inner wall and the outer wall of each pipe material body are both in a corrugated shape, the two pipe material bodies are connected through a sealing ring and a clamping hoop, one end of each of the two pipe material bodies is connected into the sealing ring, the clamping hoop is arranged on the outer layer of the sealing ring in a sleeved mode, and the width of the clamping hoop is at least the width of the wave crests of three ripples of the pipe material bodies. The connecting structure has the advantages of being good in insulation performance and good in connecting sealing performance, great low-temperature shock resistance is achieved, meanwhile, materials are the lightest in all ground burying pipe materials, and conveying cost and mounting type hoisting cost can be greatly lowered.

The invention discloses a construction method for a high-rise large-span stiff damping structure. The method comprises the following steps of performing secondary deepening; preparing for construction; mounting beam column templates on a damping part; mounting beam bottom screw punching fixing plates; placing beam bottom reinforcements; placing stiff steel beams in place; mounting stiff steel beam screws; fixedly welding the steel beams; binding frame beam reinforcements; performing limiting by using the 3mm-thick fixing steel plates at the top ends of the screws; pouring stiff concrete; correcting and rechecking the damping structure screws; mounting T-shaped steel joints on the two sides; mounting middle pin seat joints; mounting a bottom transverse H-shaped steel support; fixedly mounting an H-shaped bracket; filling a strong-strength grouting material at the bottom of a base; mounting a damper and combined pin seats on the two sides of the damper; cutting temporary angle steel of side limiting plates, and performing field weld joint detection. The method has the beneficial effects that compared with a conventional structure, the stiff damping structure has the advantages that the cost of an energy dissipation element is increased, but the using amounts of reinforcements, shape steel and concrete are reduced.

The invention provides an entire loading and transporting technology and equipment for a portal crane. The portal crane is hoisted according to the requirements of final assembly technology and powered on for test to reach the technical requirements. The portal crane is driven to a ship through a running track, a land part temporary track and a ship part temporary track, and transported to the designated site by the ship; and the portal crane runs to the land through the ship part temporary track, the land part temporary track and the running track to finish the loading and transportation. According to the invention, the portal crane is hoisted for test on the site of the manufacturer, and any problem if discovered can be solved in time; the whole hoisting test stage does not occupy the area of the owner, the hoisting equipment of the manufacturer is sufficiently used, and the hoisting cost is saved; the equipment can be put into use quickly after arriving at the area of the owner; and the field installation area and time can be greatly saved.

The invention relates to a cyclone separator for ecological oil, which consists of a cylinder body positioned on the upper half part, and a tapered cylinder and a wearable layer positioned on the lower half part; a cyclone inlet is formed on the side surface of the cylinder body; the side wall of the cyclone inlet is tangential to the inner wall of the wearable layer; an air outlet is formed on the upper part of the cylinder body; a discharging port is formed on the lower part of the tapered cylinder; the separator is formed by connecting the two sections of the cylinder body and the tapered cylinder; a plurality of pins are arranged inside the wearable layer; the upper part of the cylinder body is provided with an air outlet cylinder; the air outlet is positioned on the exposed part of the air outlet cylinder; the lower end of the air outlet cylinder positioned inside the cylinder body is provided with a filter screen. The cyclone separator for ecological oil can save the replacement time and the lifting cost; the inner wall of the separator has high wearability and impact resistance; and the service life is long.

The invention discloses a totally-assembled type hollow interlayer steel pipe concrete combined tower barrel and joints, and relates to the technical field of wind power generation. The system comprises a hollow interlayer steel pipe concrete barrel body, transverse joints, longitudinal joints and corresponding structures. The hollow interlayer steel pipe concrete barrel body is composed of an outer-layer steel pipe, an inner-layer steel pipe and concrete, studs, angle iron, T-shaped steel or the combination of the studs, the angle iron, the T-shaped steel is welded to one side of each steel pipe in advance, and then concrete pouring is conducted. The hollow interlayer steel pipe concrete barrel body is divided into 2-8 sheets in the ring direction, connection is conducted through the transverse joints, and two forms are adopted in the transverse joints. Segmented assembling of the hollow interlayer steel pipe concrete barrel body in the height direction is achieved, various segments are connected through the longitudinal joints, and two forms are adopted in the longitudinal joints. According to the system, the advantages of a combined structure are brought into full play, the stress form is reasonable, and joint connection is reliable. All the components can be prefabricated in advance, field assembling is adopted, transportation is convenient, the construction efficiency is improved, the material usage amount is reduced, and wide project application prospects are achieved.

The invention discloses an expressway floating on the sea. The expressway is formed by sequentially connecting a plurality of suspension box bridges end to end. Each suspension box bridge comprises anexpressway body, insulating outer layers and an anchoring system, wherein the expressway body comprises a bridge surface and a floating body for providing buoyancy for the bridge surface, the insulating outer layers float on the sea surface, are arranged on the two sides of the expressway body respectively so as to clamp and limit the floating body and the bridge surface, the two insulating outerlayers are fixedly connected with each other, the anchoring system comprises a balanced gravity base sinking in the seabed, the balanced gravity base is provided with a plurality of steel wire ropeswhich are connected with the two insulating outer layers respectively, and the steel wire ropes are tightened so as to limit the vertical floating of the insulating outer layers. The suspension box bridges are high in design safety coefficient and long in service life; since each suspension box bridge is an independent unit, the suspension box bridges are easy to maintain and recyclable.

The invention relates to a production technology of a wear-resistant composite pipe filled with adhesive cement. The technology comprises the following steps that a pipe is horizontally fed, horizontal filling of the adhesive cement is performed, an outer sleeve steel pipe is horizontally fixed to a support, one end of the outer sleeve steel pipe is tightly connected with a grouting sealing hoop, a plurality of fixing blocks are arranged on the outer walls of wear-resistant pipes, every two adjacent wear-resistant pipes are sealed and bonded, a pressure propelling device sequentially pushes all the wear-resistant pipes into the outer sleeve steel pipe through a propelling rod, a grouting cavity is formed among the outer sleeve steel pipe and the wear-resistant pipes through supporting of the fixing blocks, the grouting cavity is filled with the adhesive cement through a pressure grouting device, the outer sleeve steel pipe and the wear-resistant pipes form the wear-resistant composite pipe, the grouted wear-resistant composite pipe is maintained, the end, without the adhesive cement, of the wear-resistant composite pipe is repaired and is flush, and the outer surface of the wear-resistant composite pipe is treated. According to the technology, horizontal pipe feeding and horizontal adhesive cement filling are adopted, additional steps are reduced, the production period is shortened, the production efficiency can be improved, and the production cost can be reduced.

The invention discloses a wind power generation system capable of saving land and reducing load. A power generation part is arranged at the bottom of a tower drum, a bottom main shaft is connected with a power generator, a cabin main shaft is connected with blades through a hub, the cabin main shaft is connected with the bottom main shaft through a transmission mechanism, and a box transformer substation is arranged in the bottom of the tower drum and connected with the power generator. The generator is moved downwards from the cabin at the top of the tower drum to the bottom of the tower drum, so that the weight of the cabin is reduced, and the engineering hoisting cost is reduced; and meanwhile, the requirement of loads for the tower drum and a wind generation set foundation is greatly reduced, the engineering construction cost is further reduced, the land expropriation area for wind generation set construction is saved and the engineering land expropriation cost is reduced by arranging the box transformer substation in the tower drum, and the length of a cable between the generator and the box transformer substation is reduced by arranging the generator downwards and arranging the box transformer substation internally, and therefore, the material cost and the installation cost of engineering are further reduced.

The invention relates to a split type hoisting method for a land wind turbine generator set. A cabin of a 3.XMW set is divided into a cabin body and a main gear box for hoisting, so that the weight ofeach part is controlled within 80 t; and the steps of part placement, detection and the like in the hoisting process are further combined, so that split type hoisting of the wind turbine generator set is achieved, the requirement that the total weight of large single-vehicle transportation cannot exceed 100t according to the current national policy can be met, and the hoisting requirement of mainstream large cranes in the market in the prior art can also be met; and meanwhile, the hoisting frequency of a main crane is reduced, the hoisting period of the single wind turbine generator set is shortened, and the hoisting efficiency of the wind turbine generator set is improved.

The invention discloses a rotary symmetric plug pin insertion mechanism and a horizontal-type tension test machine. The rotary symmetric plug pin insertion mechanism comprises guide cylinders, plug pins, threaded rods and handles, wherein the guide cylinders are inserted and fixed into the positioning holes of a movable cross beam respectively, the plug pins are arranged in the guide cylinders respectively, the threaded rods are inserted into inner threaded holes at the central axes of the plug pins respectively, and the handles are used for driving one end of each threaded rod to rotate; and when the threaded rods rotate, the plug pins can be driven to be axially inserted into the positioning holes of a guide rail, so that a movable beam reaches a locking state relative to the guide rail. According to the rotary symmetric plug pin insertion mechanism and the horizontal-type tension test machine of the invention, by means of forward-reverse threaded rod rotation, the plug pins can be driven to be inserted into the positioning holes, so that a locking state is achieved. The rotary symmetric plug pin insertion mechanism has the advantages of great convenience, high rapidness and high accuracy. With the rotary symmetric plug pin insertion mechanism of the invention adopted, labor cost and lifting cost are decreased.