Accidents Prevention

Right here in this post, Ellsen overhead bridge crane factory provides you some analysis of crane accidents happening and tips to solve and prevents such tragedies.

As one of the eight categories of special equipment crane, the accident rate has been high in recent years for many reasons, for many reasons, including the standard lag, lack of forward-looking design, manufacturing process behind the level of lax quality control, Use management is not in place. To reduce the occurrence of crane accidents, we can start from the aspects of revision of relevant rules and standards and strengthening of supervision and management.

Ellsen Electromagnetic Crane for Sale
Ellsen Electromagnetic Crane for Sale

Lifting machinery according to national regulations is one of eight categories of special equipment. Regardless of the device itself or the use of links, from the security requirements, it and several other special devices, the danger is not large. However, according to statistics released by AQSIQ in recent years, the absolute number of accidents caused by crane accidents and casualties has always been at the top of eight categories of special equipment. In 2009, AQSIQ has taken the safety of lifting appliances as the focus of the annual “three operations” and hoped that the goal of reducing the safety accidents of lifting appliances would be achieved through remediation.

Why will the accident rate of cranes be high? We have many years experience in the safety inspection of lifting machinery, mainly for the following reasons.

Accident rate remains high for complicated reasons

Standard lag. The lag of the standard revision led to the desalination of crane design innovation. China’s crane design is based on “Crane Design Code” GB3811-1983, design safety requirements are mainly “Lifting Machinery Safety Code” GB6067-1986. The two common technical specifications standards introduced in the 1980s, the hoisting machinery for the standard management has played a decisive role. However, with the current mass production of heavy lifting machinery and put into use, as well as the improvement of production technology, the use of new materials, resulting in the standard cannot be applied in some occasions. “Crane Safety Regulations” is the main theoretical basis for lifting machinery inspection regulations, the 2009 version of the new inspection has been promulgated and started on April 1 this year, and its theoretical basis for “lifting machinery safety regulations” The revised version has not yet been introduced. Once the new regulations and new safety rules have greater discrepancies, inspection agencies will feel at a loss as to the inspection of hoisting machinery.

Ellsen overhead crane 5 ton for sale
Ellsen overhead crane 5 ton for sale

Design forward-looking enough.

Some lifting machinery manufacturers in the development of new product design, there is a force component in a variety of environments to consider the situation of the load is not sufficient. The reliability of the braking system of the hoisting mechanism is the key factor that determines the safety performance of the hoisting machinery. The accidents of the hoisting machinery in use are mostly related to the hoisting mechanism. The lifting mechanism is basically the use of electromagnet electromechanical brakes, the key to the reliability of the operation of the solenoid coil control, and crane electrical control system design is our country more than 20 years has been the weak link.

The level of manufacturing technology behind.

China’s lifting machinery standards and European standards there are some differences, resulting in lifting machinery joint ventures in China is difficult to form a climate. Some small and medium-sized crane equipment itself has still to be improved. In addition, due to market competition, the profitability of manufacturing enterprises is also very limited, and the funds invested in the research and development of new products are limited.

Single Girder traveling crane for sale
Single Girder traveling crane for sale

Poor quality control installation.

Crane installation has always been the acceptance of the final acceptance inspection, the entire installation process of quality control depends entirely on the quality of workers and technical level. Equipment installation process is actually a continuation of the manufacturing process, the site operating conditions worse than the manufacturing process. Lifting machinery manufacturing and construction norms on the process of construction process control and there is no clear standards and requirements, to a large extent, led to the installation of low-level construction, especially illegal operation and some construction technology to bring the hidden And structural defects to the accident has laid a hidden danger. April 1 new regulations began to implement, the ultimate acceptance inspection of lifting machinery for the entire installation process supervision and inspection for the future installation of lifting machinery to provide a strong guarantee of quality.

Use management is not in place.

The accident occurred in the use of links is the focus of the entire crane safety accidents, and the management of the use of units in place is the main reason. Management here refers mainly to the management of people and equipment. With the restructuring of state-owned enterprises and the development of private-owned enterprises, it is difficult to ensure that every crane is operated by a qualified person. In addition, the private-owned owners of special equipment safety awareness is also an important factor affecting the safety of lifting machinery. On the other hand, the equipment management includes routine inspection and planned maintenance of the equipment. The daily inspection is mainly the inspection of the safety performance of the equipment and is often the most easily overlooked. Some companies even annual lifting machinery repair plan is not arranged. In addition, the illegal operation is also the main cause of accidents in the course of using a crane.

Ellsen Travelling Crane for Sale
Ellsen Travelling Crane for Sale

There are other reasons for safety accidents in lifting machinery, such as the use of the environment, load classification, illegal or super-qualified lifting machinery may be the cause of the accident.

Grasp the key to radical cure

How to reduce the occurrence of crane safety accidents, as a crane inspector, we think we should start with the following aspects:

  • First, promulgated (revised) in line with the current lifting machinery industry production, installation and use requirements and give full consideration to synchronize with the international general technical standards, such as “lifting machinery safety regulations,” the amendment should focus on the lifting mechanism brake control , Make full use of electric brake auxiliary brake function to brake protection.
  • Second, encourage Chinese and foreign cooperation in the production of lifting machinery in China, the introduction of advanced technology to improve the technological content and safety performance of lifting machinery and the overall manufacturing level of China’s lifting machinery.
  • Third, strengthen the supervision and management of lifting machinery industry, crack down on the illegal and over-range production of lifting machinery. In the policy to those high-tech and high safety crane manufacturer tilt, phase out or shut down some low-tech, low-safety performance, low-cost market competition, encourage enterprises to introduce lifting machinery manufacturers High-tech personnel, especially the control of personnel, on the crane to carry out a new concept of design.
  • Fourth, strict quality supervision departments at all levels of the legal training of workers, especially the use of internal units to strengthen post operation and management skills training, highlighting the responsibility system responsible for the production safety system, and strengthen the main responsible person’s special equipment safety awareness and regulate the operation Personnel work processes and improve the safety awareness of special operations staff engaged in promoting the use of lifting machinery and equipment units on the day of the management mode.
  • Fifth, due to a long period of supervision and inspection of lifting machinery is implemented after the completion of the supervision and inspection, so according to the new inspection regulations for the installation process supervision and inspection pending all inspection personnel to change their concepts and improve their business standards. Theoretically, we should strengthen the study and understanding of regulations and understand the weak links in manufacturing and installation so as to formulate feasible guidance documents for inspection operations and ensure the quality of inspection. On this basis, in the past, the regular inspection of hoisting machinery used in the past should be conducted in accordance with the routine test in addition to the inspection and routine inspections, as well as the links that are easy to bring about potential safety hazards and defects in the process of installation and manufacture. Use advanced testing methods to increase some of the necessary testing items to prevent accidents.
  • Sixth, advocate the use of construction sites with lifting machinery supervision and inspection and supervision and management of unobstructed communication to manage ways to ensure that there is a safety hazard construction crane machinery before rectification in place shall not continue to put into use.

Any detaled information you want to know about our overhead bridge crane products, please contact us.

Grabbing Crane Safety Operation Brochure

Ellsen single girder 1 ton crane with grab for sale

What do you need to pay attention for grab bridge crane safe operation? How to deal with the sudden situation in the operation of grabbing bridge crane? Here in Ellsen Overhead Bridge crane Machinery, for clients’ operator facility, the company’s expert team provides you the following suggestion, please be sure to follow the safety manual to operate.

1.Overhead Crane Operator must have experiences in overhead crane safe and technical training, certificates. When drunk, the operator shall never be allowed to operate the lifting equipment.

  • The driver must get off at the designated location. After entering the post, the operator should ring the bell first after finishing the power transmission;
  • Operation of the drum controller and the master controller, the operating handle must be slow to ensure smooth running, but close to zero in the place a little faster, so as not to burn too long arc burst contact point, after the machine completely stopped running;
  • When operation, the overhead crane driver must focus on the overhead crane operation;
  • when the bridge crane grabs the material, the grapple must be done in the vertical direction, and not to use grapples to pull material,
  • When the traffic is moving horizontally, the grapple must be raised above the obstacle that can be encountered by more than 0.5m to prevent crushing or other accidents;
  • Grab grab material, you must slowly open to ensure that after the grab opened with the mine, the silo has a certain distance to prevent the collision of the mine;
  • The traffic grab must rise to 300mm from the beam must stop. In normal operation, prohibit the use of end switches and limit switches to cut off the power, close to the end of the speed should be slow;
Single girder crane with grab for sale
Single girder crane with grab for sale
  • Work should always pay attention to whether the brake is in good condition, when the brake is not working, brake wheel, it should not be cut off the accident switch, on the contrary, should be the two master controller at the same time open to the last When the hydraulic pump failure, the brake cannot be opened, it is strictly forbidden to continue operation, should cut off the power, the inspection and processing, cannot handle the timely report to the relevant leadership. ;
  • Lifting operations must follow the command of the signal, the hoisting operation signal in the form of bells, ground mobile lifting using intercom system and ground command personnel to contact, but any person issued an emergency stop signal should be immediately stopped.
  • Driving workers into the post operation, you must wear a labor insurance products, shall not wear non-insulated shoes into the post operation;
QZ double grider overhead crane 5t with grab for sale
QZ double girder overhead crane 5t with grab for sale
  • It is strictly forbidden to climb the running of the traffic, is strictly prohibited from the traffic bridge over; in operation, any person issued a parking signal must be parking;
  • driving brake failure is strictly prohibited driving, in operation is strictly prohibited to repair all electrical and mechanical equipment;
  • No person shall travel or stay along the carriageway except for professional maintenance of the orbiter;
  • When the vehicle is overhauled or stopped, the car must be docked to the end of the main beam and the grab must fall to the ground. When the rope falls to a minimum, the wire rope on the reel shall not be less than three turns; when the wire rope is severely worn, 12 yarns per twist, the surface is worn to 20% of the original diameter, this rope cannot continue to use;
  • It is strictly forbidden to lift equipment and personnel with grapples;
Ellsen QZ Double Beam Grab Crane forSale
Ellsen QZ Double Beam Grab Crane for sale
  • The safety cover, lighting, fire equipment, limit switches, etc. must be intact, the tool should be placed in the toolbox, so as not to fall wounding;
  • Two vehicles at the same time operation, the two should be kept at the distance of 4 meters, in close to the signal must be issued to prevent the crash.
  • When the work is stopped, the lifting material shall not be suspended in the air. In operation, the ground, downhole, or drop the hanging pieces should first ring warning. It is forbidden to hang over the head.

The above regulations are just for your reference when operating the grab bridge crane, if you have any confusions, please be free to contact us, in Ellsen overhead bridge crane factory, there are professional crane engineer team and strong manufacturing teams provide you excellent customized overhead bridge crane solution.

Overhead Crane Work Levels Classification

overhead crane 150t for sale

Overhead Cranes are intermittent machines that feature short and repetitive work. At work, the crane when the institutions open, it can stop immediately. Sometimes it can turn, while sometimes it can also be reversed. Some cranes work day and night, and some work once only, and some even work only a few times a day. This working condition shows that the crane and its agencies are working differently. At the same time, the load on the crane is also changing, and some cranes are often loaded, and some often only hanging light load, the load situation is very different. In addition, due to the different speed of the various agencies, the impact of dynamic impact load is also different.

Ellsen Electromagnetic Crane for Sale
Ellsen Electromagnetic Crane for Sale

This work characteristic of the crane must be taken into account when designing the crane parts, the metal structure and the determination of the crane power. Today, as a major technical parameter of a crane is the working level of a crane, which replaces the unreasonable working system of the past. The size of the work of the crane level is determined by the two types of capacity, one is the use of heavy cranes, known as the crane use level; the other is the size of the crane to bear the load, known as the crane load state. The crane has a certain total number of cycles during the active life. The working cycle of the crane operator is the entire process from the start of the lifting of the item to the next lifting of the item. The total number of work cycles represents the degree of utilization of the crane, which is one of the basic parameters of the crane grading. The total number of work cycles is the sum of the number of cycles of the crane during the specified service life.

Ellsen overhead crane 5 ton for sale
Ellsen overhead crane 5 ton for sale

Today, as a major technical parameter of a crane is the working level of a crane, which replaces the unreasonable working system of the past. The size of the work of the crane level is determined by the two types of capacity, one is the use of heavy-duty cranes, known as the crane use level; the other is the size of the crane to bear the load, known as the crane load state. The crane has a certain total number of cycles during the active life. The working cycle of the crane operator is the entire process from the start of the lifting of the item to the next lifting of the item. The total number of work cycles represents the degree of utilization of the crane, which is one of the basic parameters of the crane grading. The total number of work cycles is the sum of the number of cycles of the crane during the specified service life. Would like to get more tips about our overhead crane selection tip, you can also browse our other blog, https://bridgecraneselectingtips.blogspot.hk/

Or if you have any questions about the overhead crane specifications, be free to contact us.