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The tank hydraulic jacking system is mainly used for vertical tank top to tank bottom construction, and can also be used for jacking or lifting of large work pieces. It is a closed or meshed hoist way enclosed by a building or light steel structure and uses a hydraulic drive to drive the top of the cylinder.
Here is the content list:
l The tank hydraulic jacking system is classified according to the standard of walking mechanism.
l Tank hydraulic jacking system classified according to structural characteristics standards.
l The tank hydraulic jacking system is classified according to the standard of the tower structure rotation mode.
The tank hydraulic jacking system is classified according to the standard of walking mechanism.
It can be divided into mobile tank hydraulic jacking system and fixed tank hydraulic jacking system.The mobile tank hydraulic jacking system can run on a special track, has good stability, can walk with load, and has high work efficiency, so it is widely used in construction and installation projects.
The fixed tank hydraulic jacking system is divided into two types: attached jack-up type and inner-climbing type according to the different installation positions. The attached jack-up tower crane can rise as the building rises and is suitable for high-rise buildings.
Tank hydraulic jacking system classified according to structural characteristics standards.
It can be divided into pitch luffing tank hydraulic jacking system and trolley luffing tank hydraulic jacking system.The tank hydraulic jacking system of the pitch luffing jib tower does not achieve luffing by lifting and lowering the boom. Its advantages are: it can give full play to the effective height of the boom, the mechanism is simple, and the disadvantage is that the minimum amplitude is limited to the maximum amplitude About 30%, it cannot be completely close to the tower body, and the load rises and falls with the boom during luffing, and the luffing with load is not allowed.
The trolley luffing boom tower tank hydraulic jacking system relies on the trolley installed on the horizontal boom track to achieve luffing. Its advantages are: a large luffing range, the load trolley can approach the tower body, and it can change with load. The disadvantages are that the force of the boom is complex, the structure requirements are high, and the boom and the trolley must be on the upper part of the building, and the installation height of the spire is 15-20 meters higher than the roof of the building.
The tank hydraulic jacking system is classified according to the standard of the tower structure rotation mode.
It can be divided into down-turn tank hydraulic jacking system and up-turn tank hydraulic jacking system.The tank hydraulic jacking system of the lower slewing tower crane is equipped with the slewing support and the main mechanism of the balance weight at the lower end. Its advantages are: less bending moments on the tower, low center of gravity, good stability, convenient installation and maintenance, but the disadvantages are correct The slewing bearing has high requirements and the installation height is limited.
The upper slewing tower tank hydraulic jacking system has the slewing support, balance weight, and main mechanisms at the upper end. Its advantage is that since the tower body does not rotate, the lower structure of the tower body can be simplified and the jacking and joints are convenient.
The disadvantage is that when the building exceeds the height of the tower, the rotation of the tower crane is restricted due to the influence of the balance arm. At the same time, the center of gravity is higher, the wind pressure increases, and the weight increases, which increases the total weight of the whole machine.
Plate rolling machine is a forging and pressing equipment.Plate rolling machine is mainly used in the field of cold machining of industrial containers and pressure tanks, etc.Required molding consistency, arcs are standard, good welding seam connection.Traditionally, industrial containers and tanks are formed by hand - by - hand, step - by - step, experience - operated roller.Due to the increasing demand for natural gas pipelines and oil tankers, traditional production has been unable to meet the requirements of the market.Fully automated machines are needed to realize large-scale industrial production.
II. Process analysis
Plate rolling process is a forming process that USES the plate rolling machine to make continuous 3-point bending of the plate. As shown in figure 1, the plate rolling process is composed of pre-bending -- centering -- coil circle --rounding
Plate rolling, plate at both ends of a length, because the plate did not contact the roller, not bending, which is called the remaining straight side.In order to avoid the plate from the work roll out, the actual residual straight edge is often larger than the theoretical value.Because the remaining straight edge is difficult to eliminate in the straightening, and causes a large weld stress and equipment load, easy to produce quality and equipment accidents, so the sheet material must be pre-bending the plate edge before rolling, so that the remaining straight edge is close to the theoretical value.
The purpose of centering is to make the workpiece busbar parallel to the roll axis to prevent the occurrence of skew.
3. Coil circle
The method of rolling the circle is divided into one feeding and multiple feeding.
The rebound of cold coiling is remarkable, and a certain amount of over coiling is needed.
Rounding is generally divided into three steps：
4.1.Loading.Adjust the roller to the required maximum corrected curvature according to experience or calculation;
4.2.Rounding.Roll the roller for 1-2 circles under straightening curvature (especially roll near the weld zone), so that the curvature of the whole circle is uniform;
4.3.Unloading.Gradually remove the load so that the workpiece rolls several times under gradually reduced corrective load.
III.Main structure and work principle
This machine is symmetrical rolling machine, down up roller and then let up and down roller do
opposite roll to bend steel plate.
B. This machine composed of two parts those are working part welded in whole chassis and moving part. Working part composed of left and right bearing base, one up roller, two bottom rollers (the material of the three rollers is 45#steel and do heat treatment), lifting screw and turbine and other accessory parts. Down rollers drive up roller to move, up roller can do up and down move by height way. Drive part composed of main motor, main speed reducer and other accessory parts.
C. Bottom rollers were drove by main motor through main speed reducer, output spindle of main speed reducer driven to two down rollers by one group gears, the revolve direction of rollers adjusted by main motor.
D. Upper roll lifted by accessory motor through vice speed reducer drive worm and worm wheel mechanism of right/left rolls bearing base. That to let the lifting pole do up and down move.
E. Unloading device is designed to remove the workpiece after drums bended into shape. Before unloading the upper rolls move to up limit position, the balance device on upper rolls ends hit upper rolls, draw out the spindle of the pin, then to remove the workpiece.
We currently have three types of tank jacking system, which are advanced tank jacking system, chain tank jacking system and simple tank jacking system.Advanced tank jacking system has the most advanced hydraulic jacking technology available.Today we talk about the advanced tank jacking system.
Here is the content list:
What is the working principle of advanced tank jacking system?
What are the product components of the advanced tank jacking system?
What are the construction steps of advanced tank jacking system?
What is the working principle of advanced tank jacking system?
Advanced tank jacking system (package unit) is evenly distributed around tank inner wall. Tank top and upper (the first layer) wall plates are lifted first and then install and weld wall plates of tank body. Self locking advanced tank jacking system and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters advanced tank jacking system, upper clamp fastens and lifts lifting rod and expansion ring and mobilize tank (including tank top) to ascend upward. When oil returns to jack, upper clamp returns with piston and lower clamp automatically fastens lifting rod without gliding. The jack repeats the movement and make lifting rod ascend with tank to designated height (spare height for next layer of plate). After butt weld of next layer of wall plates, open upper and lower loosening device and loosen upper and lower clamp to make lifting rod and expansion ring descend to lower expanded and welded rib plate of the next layer of wall plates and then lift. Repeat the process and ascend welded tan till the last layer of wall plates are installed and welded. The installation of the whole storage tank is completed.
What are the product components of advanced tank jacking system?
1.One Module include
2.1 set x Power Pump Station: Hydraulic power supply, motor power 4KW, rated flow is about 15l/min.
We are professional pressure vessel production line supplier,If you need the related equipment,please provide following information:the material and the size of workpiece.It would be better if you could provide drawings of the workpieces.Thanks.
The advantage of pressure vessel production line:
1) .Save manpower cost and time cost, reduced project time greatly;
2) .The operation is simple, and the mechanized operation is safer;
3) .Have very strong practical, and standardized process products more in line with international standards;
4) .Strong applicability, and through the customization can achieve the requirements of different specifications of the workpiece.
The entire pressure vessel production process:
1.The process of single tower barrel:
❶Storage area of raw materials→❷Numerical control cutting machine→❸Steel plate rolling-up machine→❹Single barrel assembling and welded area→❺Flange fit-up welding zone→❻Inspection of semi-manufactured products→❼Storage area of semi-manufactured products→❽Lengthened installed and welded workshop.
2.The process of multi-section tower barrel:
❶Preparation for the supplied materials of work area→❷Hydraulic fit-up system→❸Inner circular seam automatic welding→❹Outer circular seam automatic welding→❺Inspection of semi-manufactured products→❻Delivery of rotator→❼Sandblasting and painting zone.
3.The process of tower barrel sandblasting and painting zone:
Consider that it may be a good idea to go all the way through getting a simpler machine working before graduating to your ultimate CNC project. You will have learned a lot on the simpler machine and you’ll be that much more ready to tackle a complex machine. ... increased rigidity, and lower maintenance. No cobbled-together v-groove systems ...
Lifting equipment - Wikipedia
Lifting equipment, also known as lifting gear, is a general term for any equipment that can be used to lift and lower loads. Types of lifting equipment includes heavy machinery such as the patient lift, overhead cranes, forklifts, jacks, building cradles, passenger lifts, and can also include smaller accessories such as chains, hooks, and rope. ...
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Jan 05, 2009 · Canada's
REE - Rare Earth Elements - Metals, Minerals, Mining, Uses
When China began selling rare earths at very low prices in the late 1980s and early 1990s, mines in the United States were forced to close because they could no longer make a profit.  ... Rare earths are used as catalysts, phosphors, and polishing compounds. These are used for air pollution control, illuminated screens on electronic devices ...
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