In recent years, large-scale pipeline projects have started one after another, and the level of mechanical equipment of pipeline construction solutions has been steadily improved. However, the management of pipeline construction equipment on the construction site has not kept up with the speed of pipeline engineering and mechanical equipment updates, resulting in a high rate of equipment failure and maintenance on the construction site. High cost, low technical performance and low utilization rate. In response to these situations, explore standardized maintenance in the management of pipeline construction equipment.
Here is the content list:
l Regarding the maintenance status of pipeline construction equipment at the construction site.
l What are the specific measures to achieve standardized maintenance of pipeline construction equipment?
l How can companies ensure the effective implementation of pipeline construction equipment maintenance procedures?
l Objective conditions cause pipeline construction equipment maintenance to be unable to be carried out normally. Pipeline construction has a large geographic span, harsh construction environment, and increased equipment component wear, which directly affects the stability and reliability of the equipment, causing the mechanical equipment to lose basic performance and fail to operate normally. In addition, the current project schedule is very tight. In order to catch up with the schedule and grab the schedule, it is difficult to keep up with the daily maintenance of pipeline construction equipment.
l Subjectively neglect.The subjective factor that causes the on-site pipeline construction equipment maintenance to be unable to be carried out normally is that the relevant units and management personnel do not pay attention to the equipment management. In many construction companies, the management of the company, project management, and construction crews do not pay much attention to the management of pipeline construction equipment, believing that the equipment is just a tool for wear and tear during the construction process, which emphasizes use rather than maintenance. Many construction projects and construction units arbitrarily extend the maintenance cycle of pipeline construction equipment, reduce the grade of accessories and lubricants, so that the overhaul cycle of the engine is shortened due to human factors, project maintenance costs increase, and the cycle of equipment failures is prolonged. The technical performance of pipeline construction equipment has severely declined.
l Weak technical management capabilities.The quality of equipment maintenance has declined. First of all, many on-site management personnel's understanding of on-site maintenance of pipeline construction equipment is still at the level of "replacement of the three oil filters", and the maintenance of the engine, chassis and working devices is not included in the pipeline construction equipment. Maintenance plan in progress. Secondly, the equipment operators and maintenance personnel do not have a high level of basic skills and cannot complete the overall overhaul of pipeline construction equipment with high quality.
Repair and maintenance of pipeline construction equipmentt is very important. First of all, we must regularly check, maintain and replace vulnerable parts. WINCOO will provide manuals with the machine, such as high-performance pipeline construction equipment, automatic pipeline construction equipment, small pipeline construction equipment, high-precision pipeline construction equipment, easy-to-maintain pipeline construction equipment, etc. The following are specific measures:
① In view of the low maintenance quality of pipeline construction equipment, by compiling comprehensive, meticulous, and highly operable procedures, not only can we clarify what tasks the pipeline construction equipment operators and maintenance personnel need to do daily maintenance and secondary maintenance, but also tell them How to work.
② While compiling maintenance procedures for pipeline construction equipment, the company also compiled checklists for standardized maintenance and management of various types of pipeline construction equipment, making it the main basis for management departments at all levels to inspect pipeline construction equipment, and unify inspection standards and assessment scores. Standards to facilitate the recording, filing and review of equipment inspections and inspection results.
① Personnel training. Strengthen the learning and training of pipeline construction equipment supervisors,managers, and maintenance personnel to change their concepts, fully understand the importance of maintenance to the use of equipment, and cultivate long-term perspectives and implementation of pipeline construction equipment maintenance, and completely avoid the first phase The situation where the project "eaten" a batch of pipeline construction equipment. Through regular learning and training, the standardized equipment maintenance procedures are deeply rooted in the hearts of the people, and become the working guidelines and working habits of operators and repairers, rather than the work requirements of the superior management department. Through learning and training, to a certain extent, the sense of responsibility and dedication of managers at all levels has also been improved.
② Innovate the system of deciding people and machines. In order to mobilize the enthusiasm of equipment operators to rationally use pipeline construction equipment, earnestly maintain pipeline construction equipment, and sincerely care for pipeline construction equipment, the company strictly implements the system of determining personnel and equipment, and integrates the personnel and equipment management information system to control the attendance and equipment of the operators. The intactness of the pipeline construction equipment is linked together, and the man-hours for equipment maintenance are included in the actual man-hours of the operator.
① Increase the intensity of rewards and punishments for pipeline construction equipment inspection. In order to ensure the implementation of the standardization of pipeline construction equipment on-site maintenance, the company pays special attention to the intensity of inspection rewards and punishments for pipeline construction equipment when revising the management system.
② Link the maintenance of pipeline construction equipment with bonuses. In order to motivate the construction unit to use and maintain the pipeline construction equipment, the project department regards equipment maintenance as an important assessment index when formulating the economic responsibility system assessment, guiding the construction unit to use the maintenance pipeline construction equipment rationally, controlling the construction progress and avoiding the problem to the greatest extent.
In order to ensure that pipeline construction equipment maintenance procedures can be effectively implemented, the company has formulated corresponding management systems and adopted specific measures to supervise the implementation of these systems.
l Divide maintenance responsibilities. In the management system, the corresponding responsibilities of equipment operators, pipeline construction equipment maintenance personnel, unit equipment managers, and project pipeline construction equipment managers are clarified, and these responsibilities are written into the maintenance procedures manual of each type of equipment, so that all levels of pipeline construction equipment Managers can see what they should do every day and how to record their work in the maintenance procedures.
l Promote standardized pipeline construction equipment maintenance procedures. Implement standardized equipment maintenance organization processes in each construction project to ensure smooth equipment maintenance channels and optimize the maintenance force of the entire project.
l Establish a professional maintenance team. The project department mobilizes skilled fitters, electricians, and repairers to form a professional maintenance team, which is conducive to the unified scheduling of maintenance forces for the project, and ensures low failure rate and high utilization of pipeline construction equipment.
What is more? WINCOO provide not only pipeline construction solutions, but also pipe spool fabrication solutions for customers from everywhere!
The tank hydraulic jacking system is the most commonly used lifting equipment on construction sites. It is extended section by section. It is used to lift construction materials such as steel bars, wood corrugated, and scaffold pipes. YT series tank hydraulic jacking system is a large-scale equipment specially designed and developed for the national oil reserve project, which is suitable for the upside-down welding process engineering of large steel silos. What is a tank hydraulic jacking system?
Here is the content list:
l Product description of tank hydraulic jacking system.
l Briefly describe the use and method of tank hydraulic jacking system.
l What are the characteristics of tank hydraulic jacking system?
The tank hydraulic jacking system is mainly used for the structure from top to bottom of the vertical tank, and can also be used for lifting or lifting large work pieces. First, we briefly summarize the working process of the tank hydraulic jacking system:
l Place the tank bottom plate of the tank hydraulic jacking system on the prepared foundation and weld them together.
l Assemble the roof beams or grids and finally connect them to the upper edge of the shell ring.
l Install the tank hydraulic jacking system equipment in the water tank. The plate of the second shell ring (next to the top ring) is located on the outside of the first shell.
l The completed part of the water tank (roof and top shell ring) is hydraulically lifted to a height where the plate of the second ring can be moved into place and the roof slab can be completed.
l The plates of the second shell ring are precisely positioned and welded together and fixed to the lower edge of the first ring.
l The plate of the third shell ring is placed outside the second shell ring.
l Lift the entire part of the tank (the top of the two uppermost shell rings).
l Repeat the above operation cycle until the last (bottom) housing ring is completed.
l The entire tank hydraulic jacking system is lowered to the bottom plate and welded to the bottom plate.
l Disassemble the lifting equipment of the tank hydraulic jacking system.
380V / 3ph / 50Hz
Ability to work
Will be recommended based on the lifting weight of the fuel tank
Will recommend based on tank diameter
1.5 – 2.7m
1 x 60 hydraulic powertrain
32 x SQD-160 tank trestle
Rated lifting capacity
Rated oil pressure
Effective stroke of hydraulic jack
Effective lifting height
2500 mm + 200 mm
As a large-scale equipment specially designed and developed for the national oil reserve project, the YT series tank hydraulic jacking system is suitable for the upside-down welding process engineering of large steel silos.
Tank hydraulic jacking system is the welding engineering of giant steel silo upside-down technology, suitable for steel storage tanks with height ≤ 2.5 meters. The specific usage method is as follows:
l The overall structure, the vertical lifting displacement of the overall building.
l Inverted construction of large-span roof trusses and multi-story buildings.
l Large objects are lifted vertically.
Tank hydraulic jacking system of equipment is a two-stage single-acting hydraulic cylinder (hydraulic jack), used for VTOL force or force that needs to return from the rear, so it cannot be used for horizontal work.
In addition, tank hydraulic jacking system is a compact device, safe and stable, easy to operate, adjustable load, fast installation, and high synchronization accuracy.
YT series tank hydraulic jacking system is used as a "drag five" oil supply device. Each pump station is connected to the hydraulic cylinder 5, thus avoiding the disadvantages of excessive and leaking caused by traditional centralized oil pipes and ensuring environmental pollution Minimize!
YT series hydraulic tank jacks is a set of large-scale equipment specially developed by our company for the national crude oil reserve project, which is suitable for the inversion welding engineering of giant steel cylinder tank.
This type of equipment is single-acting two-stage hydraulic cylinder (hydraulic jack), used for vertical take-off and landing work, return need external force or self-weight back, can’t be used for horizontal work.The equipment has strict and compact structure, safe and stable, easy operation, adjustable load, quick installation and high synchronization accuracy.
●The oil box
●The hydraulic system
●The hydraulic cylinder
The oil tank is a closed type box with hydraulic oil to provide oil source for the equipment.
1.Liquid level meter shows the oil level and liquid temperature in the box.
2.The air filter has the function of protecting and purifying the gas of hydraulic oil.
3.The lifting lug is used for equipment lifting.
Hydraulic system is the power source of the whole hydraulic lifting equipment, first with the motor todrive the piston pump, and then the mechanical energy of the pump into pressure energy, through the pressure valve (relief valve), direction valve (solenoid valve), sent to the actuator (hydraulic cylinder), and finally converted into mechanical energy to drive the load.
1.Protective cover can be disassembled, it mainly protect all parts under the protective cover .
2.Electromagnetic directional valve through the electromagnet with electricity and no electricity to complete the lifting action of the hydraulic cylinder.
3.The relief valve can control the pressure of the system to maintain constant by adjusting the handle of the relief valve, and realize the function of regulating, stabilizing or limiting the pressure.The set of equipment relief valve setting range (0-31.5mpa).
4.Pressure gauge shows the system pressure value.
5.The high-pressure ball valve makes the hydraulic oil flow or cut-off in the system. The valve mainly plays a safety protection role in this set of equipment.. It prevents the internal leakage of the hydraulic valve from affecting the operation of the hydraulic cylinder's descending equipment. Hydraulic fluid flow or cut-off is controlled by rotating high pressure ball valve handle.
1.Hydraulic cylinder is the actuator, rated output force is 250kN.
2.The hydraulic cylinder roof device is the force fulcrum of the piston rod end of the hydraulic Cylinder. In the process of lifting the tank, to prevent the damage of the hydraulic cylinder caused by the bending of the piston rod, or even failure and safety accidents.
3.Adjust the jacking bolt to adjust the gap between the hydraulic cylinder bracket and the tank wall, and tighten the bracket in the process of lifting the tank.
4.The hydraulic cylinder support regulating rod can mainly meet the requirements of resistance to class 5 wind load and tank partial load during the tank lifting process. It can also assist in adjusting the gap between hydraulic cylinder bracket and tank wall when rising circle falls back.
5.The equipment adopts PLC equalization system with automatic and manual modes.And the man-machine control interface is set on the control cabinet.The displacement sensor transmits signals to adjust the equipment at the same height
6.The working principle of the displacement sensor: because the wire rope is wound on a pulley built into the sensor, and the other end of the sensor has been connected to the mechanical movement, which is equipped with a display, so when the wire rope is pulled, the mechanical movement can be converted into electrical signals, so as to get the required data.
7.Unidirectional explosion-proof valve is a safety valve that allows the hydraulic cylinder to self-lock.In the process of being lifted or in the process of hanging the tank, the tank will not slide or fall because of the sudden explosion of the high-pressure hose, blurting, sudden power failure, etc.
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.
Products are widely used in aviation, aerospace, electric power, metallurgy,nuclear power, ships, automobiles, construction machinery, lifting and transportation machinery, machine tools, plastics, chemical industry, paper making,packaging, printing, rubber, textile, printing and dyeing, cement, medicine, food, oil,mining, fire, construction, military and other fields;And for the major design institute(such as: iron and steel design institute, electric power design institute, chemical design institute, etc.) to provide quality technical support and service.
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.
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