welding turning rollers for Low Alloy Steel Iron- Factory Manufacturers Suppliers From China

Hydraulic jacking system is an important machine for tank construction. The equipment is mainly used for inverted construction of vertical cylindrical steel tank (hydraulic lifting method) in petrochemical industry, inverted construction of steel liner in power plant chimney and inverted construction of vertical cylindrical low temperature tank. I will give you a detailed introduction of the hydraulic jacking system.

• What are the characteristics and applications of hydraulic jacking system?

• What are the types of hydraulic jacking system?

• What is the working principle of hydraulic jacking system?

• What are the construction steps of hydraulic jacking system?

What are the characteristics and applications of hydraulic jacking system?

●Application

1.The hydraulic jacking system are mainly used for vertical tank top to bottom construction.

2.Also it can be used for mega work piece jacking or lifting.

●Features

1.The system consists of hydraulic pump station, cylinders, steel wire, and strokes. Easy to installation and operation;

2.The system utilizes PLC central control to handle lift. Each power pack is equipped with auxiliary balance device to guarantee the precision of simultaneously lifting.

3.Hydraulic jacking system pump station has subsidiary manual control and central control two operation models. The cylinder can be adjusted to lift separately or to lift with several others as one group, and multi groups can also be integrated to lift reach better precision and better welding effect.

4.All the cylinders are with safety valve. It can be automatically locked to avoid cylinder/ tank dropping even under situation of power off, high-pressure hose broken, burst.

5.The cylinder is with one high pressure hose to avoid oil leaking that usually happen by the traditional multiple hoses. Cylinder will return to initial condition by itself weight.

6.Stroke of Hydraulic cylinder is 1475mm, which can satisfy each annular shell with 2500 plate one-step lift. Greatly reduce the time waste.

7.Hydraulic cylinder basic height is 2050mm, which can match automatic girth welding machine to proceed internal girth seam welding.

8.Module configuration, the hydraulic jack quantity can be adjusted as per different size of tank and weight

9.High efficiency, each time lifting or falling down only needs around 15 minutes.

10.Can well cooperate with our tank welding machines, which can greatly reduce the manpower cost and reduce the construction time; Usually one Horizontal seam welding machine can match 6-10 skilled welder. Vertical seam welding machine can match around 20-30 people skilled welder and butt/fillet welding tractor can match 6-15 skilled welder.

What are the types of hydraulic jacking system?

At present, we have three types of hydraulic jacking system in WINCOO Engineering Co., LTD. They are the following three: Advanced hydraulic jacking system, Simple unfixing Holding -latch hydraulic Jacking system and Simple chain type hydraulic jacking system.

What is the working principle of hydraulic jacking system?

Hydraulic 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 hydraulic jacking system and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters hydraulic 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 construction steps of hydraulic jacking system?

The following short description gives the working procedure in outline. It can in certain details be modified when required.

1.The tank bottom – plates are placed on the prepared foundation and welded together.

2.The beams or lattice work of the roof are assembled and finally joined to the upper rim of the shell ring.

3.The hydraulic jacking system is installed in the tank. The plates of the second shell ring (next to the top ring) are positioned outside the first one.

4.The completed part of the tank (roof and top shell ring) is lifted hydraulically to a height at which the plates of the second ring can be moved into place and the roof sheeting can be completed.

5.The plates of the second shell ring are located exactly and welded together to the lower edge of the first ring.

6.The plates of the third shell ring are placed outside the second shell ring.

7.The completed part of the tank (roof the two uppermost shell rings) is lifted.

8.The above cycle of operations is repeated until the last (bottom) shell ring is finished.

9.The entire tank is lowered down to the bottom plate and welded to this.

10.The lifting equipment is dismantled.

Hydraulic jacking system is mainly used in large tank construction. WINCOO ENGINEERING CO.,LTD is supplying tank hydraulic jacking system to tank contractors worldwide.

Hydraulic storage tank lifting equipment is a jack that uses a plunger or a hydraulic cylinder as a rigid jacking member. It has compact structure, stable operation and self-locking function.

How to properly maintain the hydraulic storage tank lifting equipment?

What reasons may cause the hydraulic storage tank lifting equipment lift to fail?

How does hydraulic storage tank lifting equipment work?

How to properly maintain the hydraulic storage tank lifting equipment?

1) The hydraulic storage tank lifting equipment uses oil as the medium, so the maintenance of the oil and the equipment must be done well to avoid blockage or oil leakage, which will affect the use effect.

2) For a new or long-established hydraulic storage tank lifting equipment, since there is a lot of air in the hydraulic cylinder, when it starts to use, the piston rod may have a small jump phenomenon, and the hydraulic storage tank lifting equipment can be reciprocated with no load. 2 to 3 times to remove the air in the cavity. The hydraulic storage tank lifting equipment that has been idle for a long time will harden due to the long-term non-working of the seal, which will affect the service life of the hydraulic jack. Therefore, when the hydraulic storage tank lifting equipment is not in use, it should be reciprocated 2 to 3 times a month with no load.

What reasons may cause the hydraulic storage tank lifting equipment lift to fail?

1. If the gear pump of the hydraulic storage tank lifting equipment lift is damaged, and the pumped oil has no pressure, it cannot be lifted, and the lift gear pump should be replaced.

2. The support valve or electromagnetic reversing valve of hydraulic storage tank lifting equipment lift fails to operate, and a new support valve or electromagnetic reversing valve needs to be replaced.

3. The manual pump and gear pump of the hydraulic storage tank lifting equipment lift leak oil. If the oil leak is serious, it will lead to insufficient power, and the sealing ring of the lifting oil pump needs to be replaced in time.

4. The circuit of hydraulic storage tank lifting equipment lift is open circuit. The hydraulic system is controlled by the circuit. If the circuit is short-circuited or open, it will also cause it to fail to lift. It is necessary to check the lift button contactor and fuse and other parts.

5. The check valve of the manual pump of the hydraulic storage tank lifting equipment lift is stuck and the return position fails. This kind of failure is more troublesome. The solution is to unscrew the oil pump valve port bolt, repair, clean, and replace the clean hydraulic oil.

How does hydraulic storage tank lifting equipment work?

The principle of hydraulic storage tank lifting equipment is based on Pascal's principle, that is, the pressure of the liquid is the same everywhere so that in a balanced system, the pressure exerted on the smaller piston is relatively small, and the pressure exerted on the larger piston is also relatively large to keep the liquid still.

Therefore, the hydraulic storage tank lifting equipment can obtain different pressures on different ends through the transmission of the liquid, so that a transformation purpose can be achieved. The hydraulic storage tank lifting equipment we see commonly uses this principle to achieve force transmission.

WINCOO ENGINEERING CO., LTD has committed to providing the most suitable hydraulic storage tank lifting equipment at a reasonable price, and whatever it takes to satisfy the customer’s needs.

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.

We also have many products about Pressure vessel fabrication solution and Pipe spool fabrication solution, welcome to consult us!

Tank lifted by N sets of 5T-3M model electric chain hoist, 5 tons of electric chain hoist can be used up to 60% of its max tonnage, that is, no more than 3 tons.The max stroke of the electric chain hoist is 3 meter(length can be customized).

Equipment operation steps:

1.First,making the top first circle plate of the tank body on the bottom plate;Then install the expansion ring on the first ring plate(The bottom of the expansion ring is about 200mm away from the bottom edge of the first ring plate);Finally, tighten the ring on the first ring plate with the screw jack.

2.Installed the lifting column on the inner side of the tank 400mm away from the tank wall and N lifting columns are evenly arranged on the inner side of the whole tank.Then the upper end of the column and the bottom plate of the tank are fixed with two pull rods as triangular stay support.

3.Using the pull rod to pull the two adjacent lifting columns to form an integral circle. And a lifting lug is welded on the expansion ring corresponding to the lifting column, the baffle is welded on the tank wall at the upper end of the expansion ring to block the ring.

4.Hang the electric chain hoist on the lifting lug at the top of the column and Hook the hook of the electric hoist on the lifting lug of the expansion ring.Then install all the electric hoist in order and connect the power supply of all electric hoist to the main control board(The main control board can control each electric hoist separately, and can also control all electric hoist centrally and synchronously).

Note:Switch on the total power supply, then pre-tighten each electric hoist, check whether the receiving force of all electric hoist is uniform and check whether all lifting points are normal.If everything is normal, it can be lifted.

5.Switch the main control board to the centralized control and switch on the overall rising button, so that all electric hoist will rise synchronously.In the process of lifting, if some electric hoist fails to work, the master control board shall be converted to separate control. After re-tightening the loose electric hoist, lift it as a whole until it reaches the specified height. Finally, adjust the lifting height to be consistent through separate adjustment.

6.Make the second ring plate, after welding the vertical seam and block, drop all the electric hoist as a whole, and let the first ring plate fall back to the second ring plate, so that the overall lifting of the first ring plate is completed.

7.After the girth seam welding is completed, loosen the expansion ring.And lower the rising ring to the designated height at the bottom of the second ring plate with the electric hoist, and then carry out the preparation for the next lifting.

Welcome to Videojug! Here you'll find the best how-to videos around, from delicious, easy-to-follow recipes to beauty and fashion tips.

Goodbye Heinz Field: Ketchup bottles and signage removed to make way for Acrisure Stadium On Monday, July 18, 2022, crews were hard at work at the former Heinz Field.

Feb 08, 2021 · sand. Unconfined compressive strength of 0.5 tsf* or less. 1 ½:1 (33°41’) Well rounded loose sand. 2:1 (26°34’) Original ground line *tsf = ton per square foot. Walkways or bridges with standard railings must be provided when employees or equipment are required to cross over excavations.

LOCATION: Muralla cor Recoletos Sts. Intramuros, Manila 1002 P.O. BOX769. PHONE: (632) 8527-8121 (All departments) HOURS: Monday through Saturdays 8am – 5pm