Chuck Type jack- Manufacturers Suppliers Factory From China

Simple chuck type hydraulic Jack is a double acting hydraulic jack (also known as hydraulic lifting machine) with upper and lower clamping heads divided into two bodies. It is suitable for lifting construction of various large storage tanks (steel) or other heavy objects. It needs to cooperate with the lifting rod to achieve reciprocating lifting work.

• What do you know about simple chunk type hydraulic jack?

• What is the working principle of the simple chunk type hydraulic jack?

• What are the characteristics of simple chunk type hydraulic jack?

What do you know about simple chunk type hydraulic jack?

The simple chunk type hydraulic jack comprises an oil cylinder and a piston, the upper and lower ends of the oil cylinder are respectively provided with an upper cylinder head and a lower cylinder head, and the upper cylinder head and the lower cylinder head are respectively provided with an oil inlet and outlet hole; The piston is arranged in the middle of the piston rod, the both ends of the piston rod respectively extend out of the upper cylinder head and the lower cylinder head, the piston rod is hollow, and the lifting rod axial through the piston rod, the lifting rod on the upper side and the lower side of the piston rod are respectively provided with a locking device; The locking device comprises a gripping part set on the lifting rod, the gripping part is provided with a large and small conical hole, the inner side of the conical hole is circumferentially provided with a number of wedge blocks; The outer surface of the wedge block is compatible with the conical hole, the inner side of the wedge block is provided with a clamping tooth, the clamping tooth is held on the lifting rod, the wedge block is provided with a circular spring chuck; The spring chuck is provided with a plurality of round holes, a round hole is provided with a reset spring, the upper side of the spring chuck is provided with an annular cover fixed with the grip part, and the both ends of the reset spring are respectively conflicted between the lower end face of the wedge block and the cover; The grip part on the upper side of the locking device is relatively fixed with the upper end of the piston rod, and the grip part on the lower side of the locking device is relatively fixed with the lower cylinder head by the support.

What is the working principle of the simple chunk type hydraulic jack?

Simple chunk type hydraulic jack (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 simple chunk type hydraulic 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 characteristics of simple chunk type hydraulic jack?

1, Simple chunk type hydraulic jack adopts low relaxation steel strand, as long as there is a reasonable bearing lifting point, lifting height is not restricted;

2, Through the expansion and combination of simple chunk type hydraulic jack, the lifting weight, span and area are unlimited;

3, Small volume, light weight, large bearing capacity, convenient and flexible installation, especially suitable for small space or indoor large tonnage tank lifting;

4, The simple chunk type hydraulic jack has reverse motion self-locking, which makes the lifting process very convenient, and the storage tank can be locked reliably at any position in the lifting process for a long time;

5, The simple chunk type hydraulic jack has a high degree of automation, convenient and flexible operation, with automatic operation, semi-automatic operation, single point adjustment, manual operation and other operations. LCD display, touch screen display, button operation panel display, very intuitive. And the control system is equipped with self-correction protection procedures, even if the misoperation will not cause accidents;

6, Using this series of simple chunk type hydraulic jack, the construction period is short, the cost is low, the economic benefit is good.

Wincoo Engineering Co., Ltd (WINCOO) is engaged in bringing the most suitable solutions/equipment for client, fabricators, EPC/C companies on pipe fabrication, tank construction, pipeline construction, industrial production lines, clean energy project and other industrial field.

Hydraulic jack is mainly used in the inverted construction of vertical cylindrical steel storage tank (hydraulic lifting method) in petrochemical industry, inverted construction of steel liner in power plant chimney and inverted construction of vertical cylindrical low temperature storage tank, etc. Today I will introduce our YT series hydraulic jack, and take the YT30 for example. I will introduce this product in the following aspect.

●The features of equipment

●The structure of equipment

●The overall structure of the equipment and its working principle

The features of equipment

1.The set of equipment is mainly composed of hydraulic lifting pump station, hydraulic cylinder, wire rope and so on, easy to install.

2.The equipment adopts PLC program to control the lifting centrally. Each lifting pump station is equipped with displacement sensor device, which is easy to operate and has high lifting synchronization accuracy.The equidistant distance can be adjusted arbitrarily.

3.The hydraulic lifting pump station can be divided into two modes: dynamic and centralized control. The hydraulic cylinder can be adjusted (fine-tuning) rising and falling individually or locally (several), and can be controlled centrally by multiple groups. The lifting height can be more accurately controlled, which is convenient for the butt adjustment of the welding seam of the tank wall.

4.Each hydraulic cylinder is equipped with safety valve, good self-locking,equipment will not be due to power failure in the process of operation;

5.The blasting and breaking of a high-pressure rubber hose.The failure of a hydraulic cylinder causes the tank or heavy weight to slide or fall, and the hydraulic lifting process is safe and reliable.

6.The stroke of hydraulic cylinder is 3200mm, which can meet the one-time lifting completion of the existing panel width and reduce the lifting time.

7.The overall base length of the equipment is only 2200mm, which can fully meet the automatic welding process of large storage tank inner ring seam.

The structure of equipment

Electrical control system: power supply part, control part (operating platform) and pump station control box.

Centralized control	Control panel	Power supply	Pump station control box

 

The equipment consists of five parts;It is composed of power supply part, control part, hydraulic station part and pipeline part

 ● The power supply part provides power supply for the control part, and the hydraulic station provides power supply.

● The control part provides control for hydraulic station and hydraulic jack

● Hydraulic station: it is composed of oil pump electric unit, hydraulic valve set, high-pressure ball valve, high-pressure rubber hose and oil tank to provide hydraulic energy for hydraulic jack.

● Hydraulic jack part: hydraulic cylinder, wire rope, such as equaling rod device, hydraulic cylinder roof device, hydraulic cylinder support rod, etc

● The fixed plate, wire rope lifting lug and pin for the hydraulic cylinder are made by the user.

The overall structure of the equipment and its working principle

1.The overall structure of the equipment

1).The set of equipment is evenly placed around the lifting object, the overall force and lateral force of the equipment are strictly calculated and successfully applied.

2).Precise and compact structure, adjustable output force, lifting speed to meet lifting requirements, high synchronization accuracy.

2.Working principle of equipment

Force transfer process:

Output force of hydraulic cylinder → steel wire rope → rising ring (welded with lifting lug) → conduction plate → wall plate lifting  

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

Orbital welding machine uses electric current to generate a lot of heat between two rails to be welded with large resistance. The welding quality is good and the efficiency is high.

• What are the advantages of orbital welding machine?

• What are the technical requirements when using the orbital welding machine?

• What are the fields of application of orbital welding machines?

  
  

What are the advantages of orbital welding machine?

The application range of the orbital welding machine is greatly increased, the structure is simple, the cost is low, the purchase cost of the user can be reduced, the installation operation is convenient, the auxiliary operation time is short, and the work efficiency is high. The support flexible rail includes two parallel rails, and each rail includes a strip substrate.

What are the technical requirements when using the orbital welding machine?

Orbital welding machine shall not be used if the rail has the following conditions:

1. The rail is judged to have internal damage or serious surface injury.

2. The depth of the pit after the top surface of the rail head is damaged and polished:

Weld repair on the line exceeds 8 mm;

Solder repairs over 10 mm outside the line.

3. For scratches, spalling, falling blocks and welding joint wear, low collapse, etc. on the top surface of the rail head, the allowable length of welding repair shall meet the following requirements:

For rail joints (including welded joints) wear and low collapse, the allowable one-time welding repair length is 300 mm, and if the damaged length exceeds 300 mm, it should be divided into two sections for welding repair.

For defects and damages such as scratches, spalling and falling blocks on the top surface of the rail head, the length of one welding repair is allowed to be 200 mm. If the length exceeds 200 mm, it should be divided into two sections for welding repair.

When the rail joints are worn, slumped, scratched and peeled off at the same time, the scratches and peeled off blocks should be dealt with first.

What are the fields of application of orbital welding machines?

At present, the development of railways is mainly in the direction of high-speed passenger cars, subway passenger cars, light rail cars, high-speed heavy-duty trucks, etc. In order to achieve these needs, it is necessary to reduce the weight of trains. A common practice now is to use aluminum alloy materials in the manufacturing process of passenger cars. Because aluminum alloy materials have the characteristics of light weight, corrosion resistance, smooth appearance, complex curved surfaces, and high specific strength, they can effectively reduce the resistance and quality of passenger cars, and increase the overload. In order to effectively improve the processing efficiency of aluminum alloy materials, it is necessary to change the traditional processing method and use the welding technology of the orbital welding machine for processing and manufacturing.

Wincoo Engineering Co., Ltd has ability of providing workable solutions to support clients to be awarded with shorter project execution time, fewer man-hour costs and higher efficiency construction/fabrication method and better quality during phase of project bidding.

I.     Introduction

  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

1.    Pre-bending

  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.

2.    Centering

  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.

4.    Rounding

  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.

IV.Technical parameter

1.Universal upper roll rolling machine

2.Asymmetric plate rolling machine

3.Mechanical symmetrical plate rolling machine

4.Horizontal adjustable plate rolling machine

5.Four-rollers plate rolling machine

The plate rolling machine is designed to roll the flat plate into a circular arc and cylindrical shape, which is widely used in the container manufacturing industry. It is indispensable equipment for these companies.

Why does the rolling machine need to be sealed?

What is forbidden to workers when operating a rolling machine?

What is a hydraulic rolling machine?

Why does the rolling machine need to be sealed?

The reliability and service life of the seals in the hydraulic system of sheet metal bending machine are important indicators to measure the quality of the hydraulic system.

In addition to gap seals, seals are used to keep the gap between two adjacent coupling surfaces below the minimum gap through which the liquid to be sealed can pass. The seals in the hydraulic system of sheet metal bending machine are usually contact seals. There are two types of self-sealing compression seals and self-sealing self-clamping seals, also known as lip seals. However, the factors influencing the performance of different seals in the hydraulic system of the sheet metal rolling machine are different, just as with the three-roller roller. In fact, the seal of the hood is still influenced by temperature, pressure and the existing medium.

What is forbidden to workers when operating a rolling machine?

During the measurement of the roundness of dimensions, the operator of the rolling machine is forbidden to stand on the rolled cylinder, and it is forbidden to stand on the workpiece to be machined. For some difficult-to-process workpieces, such as thicker or larger diameters, high hardness or strength of raw materials, etc., this should be done by a small number of operations simultaneously to achieve the desired effect. For some workpieces with smaller diameters, they should be rolled in the middle of the rollers for operation.

What is a hydraulic rolling machine?

The main features of hydraulic plate rolling machine: the upper roller of the machine can be lifted vertically, and the hydraulic transmission of vertical lifting is achieved by the action of the hydraulic oil in the hydraulic cylinder on the piston rod; The torque is provided, and there are tensioners under the lower roller that can be adjusted. The upper roller has the shape of a drum, which improves the straightness of the product and is suitable for tanks with various cross-sectional shapes with ultra-long specifications.

Hydraulic rolling machines can roll metal plates into circles, arcs and conical workpieces within a certain range. The two lower rollers of this model are active rollers and the upper rollers driven rollers. It is widely used in shipbuilding, boiler, aerospace, hydropower, chemical, metal structure and mechanical engineering industries.

The hydraulic rolling machine is suitable for bending metal plates. It can roll circular, arc and conical workpieces within a certain range and has the function of pre-bending the end of the plate. The two lower roles of this model are active roles. Horizontal movement, the upper roller is a driven roller and can move up and down. There are mechanical and hydraulic movements. The driveshafts are connected by cardan couplings.

To meet these growing demands, WINCOO ENGINEERING CO., LTD has various rolling machines, all of which are more effective, reliable and consistent.

Sep 12, 2017 · Rescue equipment must be available at all times, and maintained and inspected regularly to ensure that it is in good order and ready to be used whenever it may be required. A pre-rigged retrieval system is a good way of ensuring prompt rescue. Footnote [1] These inspections should be completed by a height safety equipment inspector.

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