Since entering Chinese market for more than 10 years, products of Wincoo Engineering Co.,ltd has been sold in nearly thirty provinces, cities and autonomous regions in China, and some overseas markets. The company has production line of advanced technology; meanwhile, Wincoo Engineering Co.,ltd designs, develops and processes products for famous domestic installation companies. With professional team, strict management and excellent equipment, the company strives to create the brand of "WINCOO", hydraulic hoist and series supporting products. As an expert of hydraulic hoist, WINCOO with charm of high technology is keen, innovative and forging ahead to establish design language of the company. In an all-inclusive and absorbing and open-minded manner, the hydraulic hoist and hydraulic pump station are perfectly combined to form hydraulic lifting equipment (hydraulic jack). As the founder and disseminator of hydraulic hoist, WINCOO has been building the inverted hydraulic jack and production technology of installation engineering for a long time.We are going to explain how to use the hydraulic jack safely.
●Safe operation code of hydraulic jack
●Precautions for the use of hydraulic jack
●How to repair and maintain hydraulic roof in daily use
1. Hydraulic lifting equipment must be operated by specialized operators;
2. Ground wire must be installed for hydraulic pump station;
3. Check whether motor is rotating in pump indicated direction after startup; motor for this equipment is step-down startup with six second interval. Supply oil for jack after full start of the motor; exhaust air in system via exhaust valve before lifting;
4. Rated pressure for hydraulic system is 25Mpa and pressure indication of pump station pressure gauge cannot exceed 26Mpa;
5. Check clamp block of upper and lower clamps for slip during jack lifting. If block teeth are filled with foreign matters, clean on time and clean the taper sleeve outside block. Grease the taper surface to reduce sliding friction between taper surface and block arc; if teeth shaped surface is severely worn more than 0.4mm, replace block on time. Remove upper and lower clamps and clean after each project. Check wear condition and replace when necessary;
6. Check whether exhaust valve is closed before lifting;
7. Increase pressure slowly during adjustment;
8. System pressure can be at 28Mpa for a short time. Avoid long-term operation for damaging the system;
9. Do not crash high pressure oil pipe with hard objects. Avoid welding slag scorching. Replace high pressure rubber pipe for loss on time;
10. Release the pressure in system via exhaust valve when replacing hydraulic components;
11. Lift jack for a few millimeters when loosening clamp. Unload lower clamp and loosen it;
12. Loosen all lower clamps for butt joint and check; if looseness is inadequate, do not descend jack for opposite joint to avoid lower clamp damage;
13. Adjust pressure precisely when jack is ascending or descending in place. Do not put solenoid valve at neutral position to avoid instantaneous overvoltage;
14. Long-term overload operation is prohibited;
Hydraulic oil level in oil tank should be regularly maintained to normal level. Due to large capacity chamber of piping and hydraulic cylinder, it is mostly required to fill adequate hydraulic oil. After startup, hydraulic oil enters pipeline and cylinder, oil level decreases and filter even shows above oil level. Replenish hydraulic oil once again. It’s inevitable that hydraulic oil has loss during use, therefore, observe oil level regularly and replenish on time to maintain it at the middle position of level meter;
Hydraulic oil shall be kept clean always. Use oil filter vehicle when filling hydraulic oil with filtration precision below 30υm;
Replacing cycle for hydraulic coil is one year for normal operation;
Discharge all residual oil in tank when replacing hydraulic oil and refill after cleaning the tank. Filtration precision of new oil shall not be lower than precision of the system. Oil amount in tank shall be maintained within fixed level range;
Oil temperature shall be appropriate, not more than 60℃. Check for abnormal oil temperature rise. Start hydraulic pump and operate as required after oil temperature reaches 15 ℃ during winter;
Pay attention to the following for initial startup of hydraulic pump:
1) Hydraulic oil level in the tank shall be at the full position of vernier;
2) Check rotation direction of motor and it shall be clockwise seen from motor tail (arrow direction). If the direction id reversed, stop immediately and regain operation after handling;
3) Step up after 10 minutes’ idle operation of pump station;
Pay attention to check return oil filter. Replace cartridge for damage on time;
Before starting and stopping hydraulic pump, unload the overflow valve;
Spares for wear parts (seal ring, clamp block, etc.) shall be available at all times for timely replacement;
Set pressure of overflow valve cannot exceed maximum pressure of hydraulic system;
Check and maintain the jack before operation to ensure there is no oil leakage, clamp and the whole machine is in good condition;
When inserting lifting rod, the jack shall be loosened (loosening nuts at upper and lower clamps are screwed upward in place). Note that lifting rod and jack shall be almost concentric. Reset upper and lower clamps for normal operation and make the jack in operating state;
Prevent mud and sand from entering hydraulic rubber pipes during connection to avoid damaging hydraulic system and the jack;
Overpressure (overload) is prohibited during operation;
Lifting height shall exceed 20-30mm of coaming height and make jack piston at middle position for butt weld;
Make the jack at lifting state when descending the rod and oil pressure cannot be higher than that during lifting, that is to adjust oil pressure below that during normal lifting and then loosen lower clamp. After the jack is back stroke and lifted steel plate falls on newly surrounded plates, the jack bears no load. Loosen upper clamp and lifting rod descends;
According to actual ambient temperature, it is decided to use N46 anti-wear hydraulic oil for the system and mix of other grades is prohibited;
Clean and maintain the jack on time after one project, especially attachment at clamp block teeth. Replace for severe teeth wear and repair the replaced jack.
Time for inspection
Monitor operating status during equipment operation
System pressure is stable and within specified scope.
Noise and vibration
Within 15-60℃, not more than 60℃
Within 105%-85% of rated voltage
For oil leakage of the system
Inspect before startup
Whether at red scale of level meter
Whether overflow valve is loosened
Whether ground wire is installed for pump station
Screw and pipe joints
Regular fastening: once a month
Oil filter and air filter
Regular inspection: once a month
Valve plate of oil tank pipeline
Regular inspection: dismantle, clean and replace sealing during overhaul
Specify as per working conditions and temperature, replace once every 3-4 years generally.
Specify as per working conditions and element quality. Replace for damage on time.
Hydraulic oil pollution test
Test after 1000 hours’ operation of the newly replaced hydraulic oil.
Sample with dedicated container to avoid pollution.
Sample the operating heated oil instead of static oil.
Sample 300-500ml each time.
Test oil plants test report and incorporate the result into equipment record.
Specify inspection cycle as per equipment usage.
High pressure rubber pipe
Specify replacement cycle as per working conditions.
Specify performance inspection of pump, valve, etc. as per working condition.
Hydraulic jacking system as a widely used tank lifting machine, its safety is widely supported and proven.What we said above is more to help you know how to use the hydraulic jack safely and correctly. I hope you found this helpful.
Tank advanced hydraulic jacks refer to the container used to store the oil required to ensure the operation of the hydraulic system. According to whether the liquid level of the fuel tank is connected to the atmosphere, the fuel tank can be divided into two types: open type and closed type. The hydraulic oil tank lifting device plays a vital role in the transportation of tank advanced hydraulic jacks.
Why are more and more people choosing hydraulic storage tank lifting equipment?
What are the characteristics of the overall construction of the type advanced hydraulic jack?
How does the type advanced hydraulic jack work?
1. The oil cylinder adopts a high-pressure hose, which avoids the common oil leakage phenomenon of traditional multiple hoses. The cylinder will return to its original state by its own weight;
2. The hydraulic cylinder stroke is different according to the width of the fuel tank plate, which can meet the one-step lift of each annular shell plate. Greatly reduce time waste;
3. The basic height of the hydraulic cylinder is subject to the width of the tank shell. It can be equipped with an automatic girth welding machine for inner girth welding;
4. Modular configuration, the number of jacking systems can be adjusted according to the size and weight of the tank;
5. High efficiency, it only takes about 15 minutes for each lift or drop;
6. It can be well-matched with our tank welding machine, which can greatly reduce labor costs and construction time.
The overall structure of the equipment
1. The equipment is evenly placed in the lifting tank. The overall force and lateral force of the equipment have been strictly calculated and the application has been successful.
2. The structure is rigorous and compact, the output force is adjustable, the jacking speed meets the jacking requirements, and the synchronization accuracy is high.
The power transmission of type advanced hydraulic jack: hydraulic cylinder output force → steel wire rope → lifting ring (welding lifting lug) → force transmission rib → tank wall lifting
Work jacking control process of type advanced hydraulic jack:
1. Pump station control box (rotary selection button) → centralized control operation box → hydraulic jacking pump station (valve group electromagnet) → PLC device → centralized control operation box → hydraulic jacking pump station → overall or partial hydraulic cylinder lifting .
2. Pump station control box (rotary selection button) → control handle → hydraulic cylinder (single or multiple) to fine-tune up and down.
So we can see the irreplaceable role that type advanced hydraulic jack has played in our daily life and industry production. WINCOO ENGINEERING CO., LTD, a Chinese pioneer in type advanced hydraulic jack, understands that each application is special. Our knowledgeable staff can find the best solution for any scenario, particularly when a custom product is required. We work with customers from design to completion to ensure that all technical requirements are met.
The plasma and flame cutting machine is a portable multifunctional plasma welding, cutting, high energy flame heating equipment.
What are the precautions for the use of plasma and flame cutting machine?
Compared with similar products, what are the characteristics of plasma and flame cutting machine?
What are the advantages of plasma and flame cutting machine?
1. Points to be paid attention to in forging cutting
Due to the thicker oxide scale on the surface of the forging and the fact that the ignition point of the oxide scale is higher than the melting point, the plasma and flame cutting machine is prone to cutting interruption during cutting, resulting in reduced cutting quality and reduced work efficiency. For this reason, when the forging is cut, the oxide scale on the upper and lower surfaces of the cutting area should be removed before cutting to improve the cutting speed and cutting quality.
2. The main points of anti-deformation in rolling billet cooling bed tooth plate cutting
How to control the deformation of the workpiece during cutting is very important. For example, arranging the cutting route according to the routine will cause the workpiece to be deformed and out of tolerance. Even if it is reshaped, it is difficult to meet the size requirements, and the product will eventually be scrapped. Therefore, it is very important to arrange the gas cutting route of the plasma and flame cutting machine reasonably.
3. Points to be paid attention to in thick plate cutting
In thick steel plate cutting, the temperature decreases from the top surface down. At the beginning of cutting by plasma and flame cutting machine, the oxygen pressure is gradually increased, and finally reaches a uniformity in the thickness direction of the steel plate. This results in inconsistent combustion in the thickness direction of the steel plate at the starting position of cutting, and defects at the starting end of the workpiece cutting.
Compared with laser cutting: plasma and flame cutting machine is far less than laser cutting machine in terms of cutting speed accuracy and cutting material types, but it is better than laser cutting machine in cutting thickness and cutting cost.
Compared with high-pressure water jet cutting machine: the precision of high-pressure water jet cutting machine and the types of cutting materials are better than plasma and flame cutting machine, but plasma and flame cutting machine are larger than water jet cutting machine in cutting speed and cutting thickness, and the equipment The cost and cutting cost are relatively low.
The plasma and flame cutting machine can be used for drawing, programming, nesting, verification and CNC cutting of any shape parts. Improve the steel nesting rate, effectively save steel; improve the efficiency of programming, nesting and cutting, and effectively improve the cutting production efficiency.
Great products begin with the best engineering staff, and WINCOO ENGINEERING is ready to assist you with your technical requirements for plasma and flame cutting machine.
Hydraulic jack 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. Next, we will introduce several types of hydraulic jack for you.
●Advanced hydraulic jack
●Simple unfixing Holding -latch hydraulic Jack
●Simple chain type hydraulic jack
T Series Hydraulic Tank lifting device is a large-scale equipment specially designed for the national oil reserve project developed suitable steel giant silo tank inversion welding process engineering.
Features: This type of device is a two-stage single-acting hydraulic cylinder (hydraulic jacks) for VTOL work force or return required from back position, it can not use for horizontal work. Structured compact device, Safe and stable, easy to operate, load adjustable, quick installation, high synchronization accuracy.YT Series Hydraulic Tank lifting device is "dragged five" Oil supply: Each pump station connected to the hydraulic cylinder 5; thus avoiding excessive tubing traditional centralized oil brings. Leakage points more than the disadvantages, to ensure that environmental pollution to a minimum.
Hydraulic lifting device (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 jack and hydraulic hoist composing of lifting frame and lifting rod are adopted. When oil enters hydraulic jack, 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.
chain type hydraulic jack is composed of one-stage double-acting hydraulic cylinder, pulley block, load-bearing chain and oil way etc. Moveable pulley is used to enlarge chain stroke, i.e. traveling distance of the cylinder is 1/2 of lifting distance of the chain. It applies to inverted installation and construction of various large tanks (steel) and various tanks.
1. Hydraulic lifting is stable, safe and reliable. Due to the adoption of unified hydraulic control and single or partial (several) adjustment, the whole lifting process is relatively stable. The hoist is provided with synchronizing valve and hydraulic lock to prevent sliding and falling of the tank or heavy loads, which are caused by power failure and fracture of oil tube. Hydraulic lifting is stable, safe and reliable.
2. Construction quality is ensured. As the hoist is provided with synchronizer and adjustable function, lifting height can be controlled accurately. Due to above reasons, quality of the tank is ensured.
3. The equipment is easy to operate. Construction environment is good and work efficiency is high.
4. The equipment is well-adapted. As long as the number of hydraulic hoists is increased or decreased, the whole set of equipment can be applied to the inverted hydraulic lifting construction of large storage tanks with different volumes ranging from several thousand cubic meters to tens of thousands cubic meters.
5. The hydraulic pump station and the hydraulic hoist are placed in the tank for easy operation. Finally, a door-closing plate is reserved to move the equipment out of the storage tank, and the door-closing plate is group welded well.
6. The hydraulic pump station can be controlled singly or jointly, and has strong construction adaptability and excellent technical performance price ratio.
7. Short construction period, low cost and good economic benefit. Due to the high degree of modernization and the fast lifting speed of the complete set of equipment, it has low construction cost and good economic benefit. This technology is truly characterized with convenient and centralized control, simple operation, safety and reliability (no falling), accurate control of weld clearance and lifting height of heavy objects, which can ensure the quality of the project, save labor and reduce costs, and achieve remarkable economic benefits.
These are the three types of hydraulic jacking system of our company. Our company Wincoo Engineering Co.,ltd is a hydraulic machinery manufacturing company integrated with design, development, production and sales, which mainly manufactures YT advanced hydraulic jack,LYT-type chain-type hydraulic hoist, SQD unfixing holding-latch hydraulic hoist and supporting products. Such products are mainly used for inverted lifting and installation of steel storage tanks. Founded in 2003, after years of concentrated scientific research and development, the company obtained the patent certificate of "Utility Model Hydraulic Hoist’ issued by "China National Intellectual Property Administration", and the right to use the trademark of "WINCOO" in 2008, so as to enable products of Wincoo Engineering Co.,ltd to quickly become Chinese brands.